Bug Summary

File:clang/lib/Basic/Diagnostic.cpp
Warning:line 670, column 31
Division by zero

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name Diagnostic.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -mframe-pointer=none -relaxed-aliasing -fmath-errno -fno-rounding-math -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -dwarf-column-info -fno-split-dwarf-inlining -debugger-tuning=gdb -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-11/lib/clang/11.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/build-llvm/tools/clang/lib/Basic -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/build-llvm/include -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/llvm/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-11/lib/clang/11.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/build-llvm/tools/clang/lib/Basic -fdebug-prefix-map=/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -o /tmp/scan-build-2020-03-09-184146-41876-1 -x c++ /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp
1//===- Diagnostic.cpp - C Language Family Diagnostic Handling -------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements the Diagnostic-related interfaces.
10//
11//===----------------------------------------------------------------------===//
12
13#include "clang/Basic/Diagnostic.h"
14#include "clang/Basic/CharInfo.h"
15#include "clang/Basic/DiagnosticError.h"
16#include "clang/Basic/DiagnosticIDs.h"
17#include "clang/Basic/DiagnosticOptions.h"
18#include "clang/Basic/IdentifierTable.h"
19#include "clang/Basic/PartialDiagnostic.h"
20#include "clang/Basic/SourceLocation.h"
21#include "clang/Basic/SourceManager.h"
22#include "clang/Basic/Specifiers.h"
23#include "clang/Basic/TokenKinds.h"
24#include "llvm/ADT/SmallString.h"
25#include "llvm/ADT/SmallVector.h"
26#include "llvm/ADT/StringExtras.h"
27#include "llvm/ADT/StringRef.h"
28#include "llvm/Support/CrashRecoveryContext.h"
29#include "llvm/Support/Locale.h"
30#include "llvm/Support/raw_ostream.h"
31#include <algorithm>
32#include <cassert>
33#include <cstddef>
34#include <cstdint>
35#include <cstring>
36#include <limits>
37#include <string>
38#include <utility>
39#include <vector>
40
41using namespace clang;
42
43const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
44 DiagNullabilityKind nullability) {
45 StringRef string;
46 switch (nullability.first) {
47 case NullabilityKind::NonNull:
48 string = nullability.second ? "'nonnull'" : "'_Nonnull'";
49 break;
50
51 case NullabilityKind::Nullable:
52 string = nullability.second ? "'nullable'" : "'_Nullable'";
53 break;
54
55 case NullabilityKind::Unspecified:
56 string = nullability.second ? "'null_unspecified'" : "'_Null_unspecified'";
57 break;
58 }
59
60 DB.AddString(string);
61 return DB;
62}
63
64static void DummyArgToStringFn(DiagnosticsEngine::ArgumentKind AK, intptr_t QT,
65 StringRef Modifier, StringRef Argument,
66 ArrayRef<DiagnosticsEngine::ArgumentValue> PrevArgs,
67 SmallVectorImpl<char> &Output,
68 void *Cookie,
69 ArrayRef<intptr_t> QualTypeVals) {
70 StringRef Str = "<can't format argument>";
71 Output.append(Str.begin(), Str.end());
72}
73
74DiagnosticsEngine::DiagnosticsEngine(
75 IntrusiveRefCntPtr<DiagnosticIDs> diags,
76 IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts, DiagnosticConsumer *client,
77 bool ShouldOwnClient)
78 : Diags(std::move(diags)), DiagOpts(std::move(DiagOpts)) {
79 setClient(client, ShouldOwnClient);
80 ArgToStringFn = DummyArgToStringFn;
81
82 Reset();
83}
84
85DiagnosticsEngine::~DiagnosticsEngine() {
86 // If we own the diagnostic client, destroy it first so that it can access the
87 // engine from its destructor.
88 setClient(nullptr);
89}
90
91void DiagnosticsEngine::dump() const {
92 DiagStatesByLoc.dump(*SourceMgr);
93}
94
95void DiagnosticsEngine::dump(StringRef DiagName) const {
96 DiagStatesByLoc.dump(*SourceMgr, DiagName);
97}
98
99void DiagnosticsEngine::setClient(DiagnosticConsumer *client,
100 bool ShouldOwnClient) {
101 Owner.reset(ShouldOwnClient ? client : nullptr);
102 Client = client;
103}
104
105void DiagnosticsEngine::pushMappings(SourceLocation Loc) {
106 DiagStateOnPushStack.push_back(GetCurDiagState());
107}
108
109bool DiagnosticsEngine::popMappings(SourceLocation Loc) {
110 if (DiagStateOnPushStack.empty())
111 return false;
112
113 if (DiagStateOnPushStack.back() != GetCurDiagState()) {
114 // State changed at some point between push/pop.
115 PushDiagStatePoint(DiagStateOnPushStack.back(), Loc);
116 }
117 DiagStateOnPushStack.pop_back();
118 return true;
119}
120
121void DiagnosticsEngine::Reset() {
122 ErrorOccurred = false;
123 UncompilableErrorOccurred = false;
124 FatalErrorOccurred = false;
125 UnrecoverableErrorOccurred = false;
126
127 NumWarnings = 0;
128 NumErrors = 0;
129 TrapNumErrorsOccurred = 0;
130 TrapNumUnrecoverableErrorsOccurred = 0;
131
132 CurDiagID = std::numeric_limits<unsigned>::max();
133 LastDiagLevel = DiagnosticIDs::Ignored;
134 DelayedDiagID = 0;
135
136 // Clear state related to #pragma diagnostic.
137 DiagStates.clear();
138 DiagStatesByLoc.clear();
139 DiagStateOnPushStack.clear();
140
141 // Create a DiagState and DiagStatePoint representing diagnostic changes
142 // through command-line.
143 DiagStates.emplace_back();
144 DiagStatesByLoc.appendFirst(&DiagStates.back());
145}
146
147void DiagnosticsEngine::SetDelayedDiagnostic(unsigned DiagID, StringRef Arg1,
148 StringRef Arg2, StringRef Arg3) {
149 if (DelayedDiagID)
150 return;
151
152 DelayedDiagID = DiagID;
153 DelayedDiagArg1 = Arg1.str();
154 DelayedDiagArg2 = Arg2.str();
155 DelayedDiagArg3 = Arg3.str();
156}
157
158void DiagnosticsEngine::ReportDelayed() {
159 unsigned ID = DelayedDiagID;
160 DelayedDiagID = 0;
161 Report(ID) << DelayedDiagArg1 << DelayedDiagArg2 << DelayedDiagArg3;
162}
163
164void DiagnosticsEngine::DiagStateMap::appendFirst(DiagState *State) {
165 assert(Files.empty() && "not first")((Files.empty() && "not first") ? static_cast<void
> (0) : __assert_fail ("Files.empty() && \"not first\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 165, __PRETTY_FUNCTION__))
;
166 FirstDiagState = CurDiagState = State;
167 CurDiagStateLoc = SourceLocation();
168}
169
170void DiagnosticsEngine::DiagStateMap::append(SourceManager &SrcMgr,
171 SourceLocation Loc,
172 DiagState *State) {
173 CurDiagState = State;
174 CurDiagStateLoc = Loc;
175
176 std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedLoc(Loc);
177 unsigned Offset = Decomp.second;
178 for (File *F = getFile(SrcMgr, Decomp.first); F;
179 Offset = F->ParentOffset, F = F->Parent) {
180 F->HasLocalTransitions = true;
181 auto &Last = F->StateTransitions.back();
182 assert(Last.Offset <= Offset && "state transitions added out of order")((Last.Offset <= Offset && "state transitions added out of order"
) ? static_cast<void> (0) : __assert_fail ("Last.Offset <= Offset && \"state transitions added out of order\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 182, __PRETTY_FUNCTION__))
;
183
184 if (Last.Offset == Offset) {
185 if (Last.State == State)
186 break;
187 Last.State = State;
188 continue;
189 }
190
191 F->StateTransitions.push_back({State, Offset});
192 }
193}
194
195DiagnosticsEngine::DiagState *
196DiagnosticsEngine::DiagStateMap::lookup(SourceManager &SrcMgr,
197 SourceLocation Loc) const {
198 // Common case: we have not seen any diagnostic pragmas.
199 if (Files.empty())
200 return FirstDiagState;
201
202 std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedLoc(Loc);
203 const File *F = getFile(SrcMgr, Decomp.first);
204 return F->lookup(Decomp.second);
205}
206
207DiagnosticsEngine::DiagState *
208DiagnosticsEngine::DiagStateMap::File::lookup(unsigned Offset) const {
209 auto OnePastIt =
210 llvm::partition_point(StateTransitions, [=](const DiagStatePoint &P) {
211 return P.Offset <= Offset;
212 });
213 assert(OnePastIt != StateTransitions.begin() && "missing initial state")((OnePastIt != StateTransitions.begin() && "missing initial state"
) ? static_cast<void> (0) : __assert_fail ("OnePastIt != StateTransitions.begin() && \"missing initial state\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 213, __PRETTY_FUNCTION__))
;
214 return OnePastIt[-1].State;
215}
216
217DiagnosticsEngine::DiagStateMap::File *
218DiagnosticsEngine::DiagStateMap::getFile(SourceManager &SrcMgr,
219 FileID ID) const {
220 // Get or insert the File for this ID.
221 auto Range = Files.equal_range(ID);
222 if (Range.first != Range.second)
223 return &Range.first->second;
224 auto &F = Files.insert(Range.first, std::make_pair(ID, File()))->second;
225
226 // We created a new File; look up the diagnostic state at the start of it and
227 // initialize it.
228 if (ID.isValid()) {
229 std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedIncludedLoc(ID);
230 F.Parent = getFile(SrcMgr, Decomp.first);
231 F.ParentOffset = Decomp.second;
232 F.StateTransitions.push_back({F.Parent->lookup(Decomp.second), 0});
233 } else {
234 // This is the (imaginary) root file into which we pretend all top-level
235 // files are included; it descends from the initial state.
236 //
237 // FIXME: This doesn't guarantee that we use the same ordering as
238 // isBeforeInTranslationUnit in the cases where someone invented another
239 // top-level file and added diagnostic pragmas to it. See the code at the
240 // end of isBeforeInTranslationUnit for the quirks it deals with.
241 F.StateTransitions.push_back({FirstDiagState, 0});
242 }
243 return &F;
244}
245
246void DiagnosticsEngine::DiagStateMap::dump(SourceManager &SrcMgr,
247 StringRef DiagName) const {
248 llvm::errs() << "diagnostic state at ";
249 CurDiagStateLoc.print(llvm::errs(), SrcMgr);
250 llvm::errs() << ": " << CurDiagState << "\n";
251
252 for (auto &F : Files) {
253 FileID ID = F.first;
254 File &File = F.second;
255
256 bool PrintedOuterHeading = false;
257 auto PrintOuterHeading = [&] {
258 if (PrintedOuterHeading) return;
259 PrintedOuterHeading = true;
260
261 llvm::errs() << "File " << &File << " <FileID " << ID.getHashValue()
262 << ">: " << SrcMgr.getBuffer(ID)->getBufferIdentifier();
263 if (F.second.Parent) {
264 std::pair<FileID, unsigned> Decomp =
265 SrcMgr.getDecomposedIncludedLoc(ID);
266 assert(File.ParentOffset == Decomp.second)((File.ParentOffset == Decomp.second) ? static_cast<void>
(0) : __assert_fail ("File.ParentOffset == Decomp.second", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 266, __PRETTY_FUNCTION__))
;
267 llvm::errs() << " parent " << File.Parent << " <FileID "
268 << Decomp.first.getHashValue() << "> ";
269 SrcMgr.getLocForStartOfFile(Decomp.first)
270 .getLocWithOffset(Decomp.second)
271 .print(llvm::errs(), SrcMgr);
272 }
273 if (File.HasLocalTransitions)
274 llvm::errs() << " has_local_transitions";
275 llvm::errs() << "\n";
276 };
277
278 if (DiagName.empty())
279 PrintOuterHeading();
280
281 for (DiagStatePoint &Transition : File.StateTransitions) {
282 bool PrintedInnerHeading = false;
283 auto PrintInnerHeading = [&] {
284 if (PrintedInnerHeading) return;
285 PrintedInnerHeading = true;
286
287 PrintOuterHeading();
288 llvm::errs() << " ";
289 SrcMgr.getLocForStartOfFile(ID)
290 .getLocWithOffset(Transition.Offset)
291 .print(llvm::errs(), SrcMgr);
292 llvm::errs() << ": state " << Transition.State << ":\n";
293 };
294
295 if (DiagName.empty())
296 PrintInnerHeading();
297
298 for (auto &Mapping : *Transition.State) {
299 StringRef Option =
300 DiagnosticIDs::getWarningOptionForDiag(Mapping.first);
301 if (!DiagName.empty() && DiagName != Option)
302 continue;
303
304 PrintInnerHeading();
305 llvm::errs() << " ";
306 if (Option.empty())
307 llvm::errs() << "<unknown " << Mapping.first << ">";
308 else
309 llvm::errs() << Option;
310 llvm::errs() << ": ";
311
312 switch (Mapping.second.getSeverity()) {
313 case diag::Severity::Ignored: llvm::errs() << "ignored"; break;
314 case diag::Severity::Remark: llvm::errs() << "remark"; break;
315 case diag::Severity::Warning: llvm::errs() << "warning"; break;
316 case diag::Severity::Error: llvm::errs() << "error"; break;
317 case diag::Severity::Fatal: llvm::errs() << "fatal"; break;
318 }
319
320 if (!Mapping.second.isUser())
321 llvm::errs() << " default";
322 if (Mapping.second.isPragma())
323 llvm::errs() << " pragma";
324 if (Mapping.second.hasNoWarningAsError())
325 llvm::errs() << " no-error";
326 if (Mapping.second.hasNoErrorAsFatal())
327 llvm::errs() << " no-fatal";
328 if (Mapping.second.wasUpgradedFromWarning())
329 llvm::errs() << " overruled";
330 llvm::errs() << "\n";
331 }
332 }
333 }
334}
335
336void DiagnosticsEngine::PushDiagStatePoint(DiagState *State,
337 SourceLocation Loc) {
338 assert(Loc.isValid() && "Adding invalid loc point")((Loc.isValid() && "Adding invalid loc point") ? static_cast
<void> (0) : __assert_fail ("Loc.isValid() && \"Adding invalid loc point\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 338, __PRETTY_FUNCTION__))
;
339 DiagStatesByLoc.append(*SourceMgr, Loc, State);
340}
341
342void DiagnosticsEngine::setSeverity(diag::kind Diag, diag::Severity Map,
343 SourceLocation L) {
344 assert(Diag < diag::DIAG_UPPER_LIMIT &&((Diag < diag::DIAG_UPPER_LIMIT && "Can only map builtin diagnostics"
) ? static_cast<void> (0) : __assert_fail ("Diag < diag::DIAG_UPPER_LIMIT && \"Can only map builtin diagnostics\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 345, __PRETTY_FUNCTION__))
345 "Can only map builtin diagnostics")((Diag < diag::DIAG_UPPER_LIMIT && "Can only map builtin diagnostics"
) ? static_cast<void> (0) : __assert_fail ("Diag < diag::DIAG_UPPER_LIMIT && \"Can only map builtin diagnostics\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 345, __PRETTY_FUNCTION__))
;
346 assert((Diags->isBuiltinWarningOrExtension(Diag) ||(((Diags->isBuiltinWarningOrExtension(Diag) || (Map == diag
::Severity::Fatal || Map == diag::Severity::Error)) &&
"Cannot map errors into warnings!") ? static_cast<void>
(0) : __assert_fail ("(Diags->isBuiltinWarningOrExtension(Diag) || (Map == diag::Severity::Fatal || Map == diag::Severity::Error)) && \"Cannot map errors into warnings!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 348, __PRETTY_FUNCTION__))
347 (Map == diag::Severity::Fatal || Map == diag::Severity::Error)) &&(((Diags->isBuiltinWarningOrExtension(Diag) || (Map == diag
::Severity::Fatal || Map == diag::Severity::Error)) &&
"Cannot map errors into warnings!") ? static_cast<void>
(0) : __assert_fail ("(Diags->isBuiltinWarningOrExtension(Diag) || (Map == diag::Severity::Fatal || Map == diag::Severity::Error)) && \"Cannot map errors into warnings!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 348, __PRETTY_FUNCTION__))
348 "Cannot map errors into warnings!")(((Diags->isBuiltinWarningOrExtension(Diag) || (Map == diag
::Severity::Fatal || Map == diag::Severity::Error)) &&
"Cannot map errors into warnings!") ? static_cast<void>
(0) : __assert_fail ("(Diags->isBuiltinWarningOrExtension(Diag) || (Map == diag::Severity::Fatal || Map == diag::Severity::Error)) && \"Cannot map errors into warnings!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 348, __PRETTY_FUNCTION__))
;
349 assert((L.isInvalid() || SourceMgr) && "No SourceMgr for valid location")(((L.isInvalid() || SourceMgr) && "No SourceMgr for valid location"
) ? static_cast<void> (0) : __assert_fail ("(L.isInvalid() || SourceMgr) && \"No SourceMgr for valid location\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 349, __PRETTY_FUNCTION__))
;
350
351 // Don't allow a mapping to a warning override an error/fatal mapping.
352 bool WasUpgradedFromWarning = false;
353 if (Map == diag::Severity::Warning) {
354 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
355 if (Info.getSeverity() == diag::Severity::Error ||
356 Info.getSeverity() == diag::Severity::Fatal) {
357 Map = Info.getSeverity();
358 WasUpgradedFromWarning = true;
359 }
360 }
361 DiagnosticMapping Mapping = makeUserMapping(Map, L);
362 Mapping.setUpgradedFromWarning(WasUpgradedFromWarning);
363
364 // Common case; setting all the diagnostics of a group in one place.
365 if ((L.isInvalid() || L == DiagStatesByLoc.getCurDiagStateLoc()) &&
366 DiagStatesByLoc.getCurDiagState()) {
367 // FIXME: This is theoretically wrong: if the current state is shared with
368 // some other location (via push/pop) we will change the state for that
369 // other location as well. This cannot currently happen, as we can't update
370 // the diagnostic state at the same location at which we pop.
371 DiagStatesByLoc.getCurDiagState()->setMapping(Diag, Mapping);
372 return;
373 }
374
375 // A diagnostic pragma occurred, create a new DiagState initialized with
376 // the current one and a new DiagStatePoint to record at which location
377 // the new state became active.
378 DiagStates.push_back(*GetCurDiagState());
379 DiagStates.back().setMapping(Diag, Mapping);
380 PushDiagStatePoint(&DiagStates.back(), L);
381}
382
383bool DiagnosticsEngine::setSeverityForGroup(diag::Flavor Flavor,
384 StringRef Group, diag::Severity Map,
385 SourceLocation Loc) {
386 // Get the diagnostics in this group.
387 SmallVector<diag::kind, 256> GroupDiags;
388 if (Diags->getDiagnosticsInGroup(Flavor, Group, GroupDiags))
389 return true;
390
391 // Set the mapping.
392 for (diag::kind Diag : GroupDiags)
393 setSeverity(Diag, Map, Loc);
394
395 return false;
396}
397
398bool DiagnosticsEngine::setDiagnosticGroupWarningAsError(StringRef Group,
399 bool Enabled) {
400 // If we are enabling this feature, just set the diagnostic mappings to map to
401 // errors.
402 if (Enabled)
403 return setSeverityForGroup(diag::Flavor::WarningOrError, Group,
404 diag::Severity::Error);
405
406 // Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and
407 // potentially downgrade anything already mapped to be a warning.
408
409 // Get the diagnostics in this group.
410 SmallVector<diag::kind, 8> GroupDiags;
411 if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group,
412 GroupDiags))
413 return true;
414
415 // Perform the mapping change.
416 for (diag::kind Diag : GroupDiags) {
417 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
418
419 if (Info.getSeverity() == diag::Severity::Error ||
420 Info.getSeverity() == diag::Severity::Fatal)
421 Info.setSeverity(diag::Severity::Warning);
422
423 Info.setNoWarningAsError(true);
424 }
425
426 return false;
427}
428
429bool DiagnosticsEngine::setDiagnosticGroupErrorAsFatal(StringRef Group,
430 bool Enabled) {
431 // If we are enabling this feature, just set the diagnostic mappings to map to
432 // fatal errors.
433 if (Enabled)
434 return setSeverityForGroup(diag::Flavor::WarningOrError, Group,
435 diag::Severity::Fatal);
436
437 // Otherwise, we want to set the diagnostic mapping's "no Wfatal-errors" bit,
438 // and potentially downgrade anything already mapped to be a fatal error.
439
440 // Get the diagnostics in this group.
441 SmallVector<diag::kind, 8> GroupDiags;
442 if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group,
443 GroupDiags))
444 return true;
445
446 // Perform the mapping change.
447 for (diag::kind Diag : GroupDiags) {
448 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
449
450 if (Info.getSeverity() == diag::Severity::Fatal)
451 Info.setSeverity(diag::Severity::Error);
452
453 Info.setNoErrorAsFatal(true);
454 }
455
456 return false;
457}
458
459void DiagnosticsEngine::setSeverityForAll(diag::Flavor Flavor,
460 diag::Severity Map,
461 SourceLocation Loc) {
462 // Get all the diagnostics.
463 std::vector<diag::kind> AllDiags;
464 DiagnosticIDs::getAllDiagnostics(Flavor, AllDiags);
465
466 // Set the mapping.
467 for (diag::kind Diag : AllDiags)
468 if (Diags->isBuiltinWarningOrExtension(Diag))
469 setSeverity(Diag, Map, Loc);
470}
471
472void DiagnosticsEngine::Report(const StoredDiagnostic &storedDiag) {
473 assert(CurDiagID == std::numeric_limits<unsigned>::max() &&((CurDiagID == std::numeric_limits<unsigned>::max() &&
"Multiple diagnostics in flight at once!") ? static_cast<
void> (0) : __assert_fail ("CurDiagID == std::numeric_limits<unsigned>::max() && \"Multiple diagnostics in flight at once!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 474, __PRETTY_FUNCTION__))
474 "Multiple diagnostics in flight at once!")((CurDiagID == std::numeric_limits<unsigned>::max() &&
"Multiple diagnostics in flight at once!") ? static_cast<
void> (0) : __assert_fail ("CurDiagID == std::numeric_limits<unsigned>::max() && \"Multiple diagnostics in flight at once!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 474, __PRETTY_FUNCTION__))
;
475
476 CurDiagLoc = storedDiag.getLocation();
477 CurDiagID = storedDiag.getID();
478 NumDiagArgs = 0;
479
480 DiagRanges.clear();
481 DiagRanges.append(storedDiag.range_begin(), storedDiag.range_end());
482
483 DiagFixItHints.clear();
484 DiagFixItHints.append(storedDiag.fixit_begin(), storedDiag.fixit_end());
485
486 assert(Client && "DiagnosticConsumer not set!")((Client && "DiagnosticConsumer not set!") ? static_cast
<void> (0) : __assert_fail ("Client && \"DiagnosticConsumer not set!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 486, __PRETTY_FUNCTION__))
;
487 Level DiagLevel = storedDiag.getLevel();
488 Diagnostic Info(this, storedDiag.getMessage());
489 Client->HandleDiagnostic(DiagLevel, Info);
490 if (Client->IncludeInDiagnosticCounts()) {
491 if (DiagLevel == DiagnosticsEngine::Warning)
492 ++NumWarnings;
493 }
494
495 CurDiagID = std::numeric_limits<unsigned>::max();
496}
497
498bool DiagnosticsEngine::EmitCurrentDiagnostic(bool Force) {
499 assert(getClient() && "DiagnosticClient not set!")((getClient() && "DiagnosticClient not set!") ? static_cast
<void> (0) : __assert_fail ("getClient() && \"DiagnosticClient not set!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 499, __PRETTY_FUNCTION__))
;
500
501 bool Emitted;
502 if (Force) {
503 Diagnostic Info(this);
504
505 // Figure out the diagnostic level of this message.
506 DiagnosticIDs::Level DiagLevel
507 = Diags->getDiagnosticLevel(Info.getID(), Info.getLocation(), *this);
508
509 Emitted = (DiagLevel != DiagnosticIDs::Ignored);
510 if (Emitted) {
511 // Emit the diagnostic regardless of suppression level.
512 Diags->EmitDiag(*this, DiagLevel);
513 }
514 } else {
515 // Process the diagnostic, sending the accumulated information to the
516 // DiagnosticConsumer.
517 Emitted = ProcessDiag();
518 }
519
520 // Clear out the current diagnostic object.
521 Clear();
522
523 // If there was a delayed diagnostic, emit it now.
524 if (!Force && DelayedDiagID)
525 ReportDelayed();
526
527 return Emitted;
528}
529
530DiagnosticConsumer::~DiagnosticConsumer() = default;
531
532void DiagnosticConsumer::HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
533 const Diagnostic &Info) {
534 if (!IncludeInDiagnosticCounts())
535 return;
536
537 if (DiagLevel == DiagnosticsEngine::Warning)
538 ++NumWarnings;
539 else if (DiagLevel >= DiagnosticsEngine::Error)
540 ++NumErrors;
541}
542
543/// ModifierIs - Return true if the specified modifier matches specified string.
544template <std::size_t StrLen>
545static bool ModifierIs(const char *Modifier, unsigned ModifierLen,
546 const char (&Str)[StrLen]) {
547 return StrLen-1 == ModifierLen && memcmp(Modifier, Str, StrLen-1) == 0;
548}
549
550/// ScanForward - Scans forward, looking for the given character, skipping
551/// nested clauses and escaped characters.
552static const char *ScanFormat(const char *I, const char *E, char Target) {
553 unsigned Depth = 0;
554
555 for ( ; I != E; ++I) {
556 if (Depth == 0 && *I == Target) return I;
557 if (Depth != 0 && *I == '}') Depth--;
558
559 if (*I == '%') {
560 I++;
561 if (I == E) break;
562
563 // Escaped characters get implicitly skipped here.
564
565 // Format specifier.
566 if (!isDigit(*I) && !isPunctuation(*I)) {
567 for (I++; I != E && !isDigit(*I) && *I != '{'; I++) ;
568 if (I == E) break;
569 if (*I == '{')
570 Depth++;
571 }
572 }
573 }
574 return E;
575}
576
577/// HandleSelectModifier - Handle the integer 'select' modifier. This is used
578/// like this: %select{foo|bar|baz}2. This means that the integer argument
579/// "%2" has a value from 0-2. If the value is 0, the diagnostic prints 'foo'.
580/// If the value is 1, it prints 'bar'. If it has the value 2, it prints 'baz'.
581/// This is very useful for certain classes of variant diagnostics.
582static void HandleSelectModifier(const Diagnostic &DInfo, unsigned ValNo,
583 const char *Argument, unsigned ArgumentLen,
584 SmallVectorImpl<char> &OutStr) {
585 const char *ArgumentEnd = Argument+ArgumentLen;
586
587 // Skip over 'ValNo' |'s.
588 while (ValNo) {
589 const char *NextVal = ScanFormat(Argument, ArgumentEnd, '|');
590 assert(NextVal != ArgumentEnd && "Value for integer select modifier was"((NextVal != ArgumentEnd && "Value for integer select modifier was"
" larger than the number of options in the diagnostic string!"
) ? static_cast<void> (0) : __assert_fail ("NextVal != ArgumentEnd && \"Value for integer select modifier was\" \" larger than the number of options in the diagnostic string!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 591, __PRETTY_FUNCTION__))
591 " larger than the number of options in the diagnostic string!")((NextVal != ArgumentEnd && "Value for integer select modifier was"
" larger than the number of options in the diagnostic string!"
) ? static_cast<void> (0) : __assert_fail ("NextVal != ArgumentEnd && \"Value for integer select modifier was\" \" larger than the number of options in the diagnostic string!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 591, __PRETTY_FUNCTION__))
;
592 Argument = NextVal+1; // Skip this string.
593 --ValNo;
594 }
595
596 // Get the end of the value. This is either the } or the |.
597 const char *EndPtr = ScanFormat(Argument, ArgumentEnd, '|');
598
599 // Recursively format the result of the select clause into the output string.
600 DInfo.FormatDiagnostic(Argument, EndPtr, OutStr);
601}
602
603/// HandleIntegerSModifier - Handle the integer 's' modifier. This adds the
604/// letter 's' to the string if the value is not 1. This is used in cases like
605/// this: "you idiot, you have %4 parameter%s4!".
606static void HandleIntegerSModifier(unsigned ValNo,
607 SmallVectorImpl<char> &OutStr) {
608 if (ValNo != 1)
609 OutStr.push_back('s');
610}
611
612/// HandleOrdinalModifier - Handle the integer 'ord' modifier. This
613/// prints the ordinal form of the given integer, with 1 corresponding
614/// to the first ordinal. Currently this is hard-coded to use the
615/// English form.
616static void HandleOrdinalModifier(unsigned ValNo,
617 SmallVectorImpl<char> &OutStr) {
618 assert(ValNo != 0 && "ValNo must be strictly positive!")((ValNo != 0 && "ValNo must be strictly positive!") ?
static_cast<void> (0) : __assert_fail ("ValNo != 0 && \"ValNo must be strictly positive!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 618, __PRETTY_FUNCTION__))
;
619
620 llvm::raw_svector_ostream Out(OutStr);
621
622 // We could use text forms for the first N ordinals, but the numeric
623 // forms are actually nicer in diagnostics because they stand out.
624 Out << ValNo << llvm::getOrdinalSuffix(ValNo);
625}
626
627/// PluralNumber - Parse an unsigned integer and advance Start.
628static unsigned PluralNumber(const char *&Start, const char *End) {
629 // Programming 101: Parse a decimal number :-)
630 unsigned Val = 0;
20
'Val' initialized to 0
631 while (Start
20.1
'Start' is not equal to 'End'
!= End && *Start >= '0' && *Start <= '9') {
21
Assuming the condition is true
22
Assuming the condition is false
23
Loop condition is false. Execution continues on line 636
632 Val *= 10;
633 Val += *Start - '0';
634 ++Start;
635 }
636 return Val;
24
Returning zero (loaded from 'Val')
637}
638
639/// TestPluralRange - Test if Val is in the parsed range. Modifies Start.
640static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) {
641 if (*Start != '[') {
642 unsigned Ref = PluralNumber(Start, End);
643 return Ref == Val;
644 }
645
646 ++Start;
647 unsigned Low = PluralNumber(Start, End);
648 assert(*Start == ',' && "Bad plural expression syntax: expected ,")((*Start == ',' && "Bad plural expression syntax: expected ,"
) ? static_cast<void> (0) : __assert_fail ("*Start == ',' && \"Bad plural expression syntax: expected ,\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 648, __PRETTY_FUNCTION__))
;
649 ++Start;
650 unsigned High = PluralNumber(Start, End);
651 assert(*Start == ']' && "Bad plural expression syntax: expected )")((*Start == ']' && "Bad plural expression syntax: expected )"
) ? static_cast<void> (0) : __assert_fail ("*Start == ']' && \"Bad plural expression syntax: expected )\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 651, __PRETTY_FUNCTION__))
;
652 ++Start;
653 return Low <= Val && Val <= High;
654}
655
656/// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier.
657static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) {
658 // Empty condition?
659 if (*Start == ':')
15
Taking false branch
660 return true;
661
662 while (true) {
16
Loop condition is true. Entering loop body
663 char C = *Start;
664 if (C == '%') {
17
Assuming the condition is true
18
Taking true branch
665 // Modulo expression
666 ++Start;
667 unsigned Arg = PluralNumber(Start, End);
19
Calling 'PluralNumber'
25
Returning from 'PluralNumber'
26
'Arg' initialized to 0
668 assert(*Start == '=' && "Bad plural expression syntax: expected =")((*Start == '=' && "Bad plural expression syntax: expected ="
) ? static_cast<void> (0) : __assert_fail ("*Start == '=' && \"Bad plural expression syntax: expected =\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 668, __PRETTY_FUNCTION__))
;
27
Assuming the condition is true
28
'?' condition is true
669 ++Start;
670 unsigned ValMod = ValNo % Arg;
29
Division by zero
671 if (TestPluralRange(ValMod, Start, End))
672 return true;
673 } else {
674 assert((C == '[' || (C >= '0' && C <= '9')) &&(((C == '[' || (C >= '0' && C <= '9')) &&
"Bad plural expression syntax: unexpected character") ? static_cast
<void> (0) : __assert_fail ("(C == '[' || (C >= '0' && C <= '9')) && \"Bad plural expression syntax: unexpected character\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 675, __PRETTY_FUNCTION__))
675 "Bad plural expression syntax: unexpected character")(((C == '[' || (C >= '0' && C <= '9')) &&
"Bad plural expression syntax: unexpected character") ? static_cast
<void> (0) : __assert_fail ("(C == '[' || (C >= '0' && C <= '9')) && \"Bad plural expression syntax: unexpected character\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 675, __PRETTY_FUNCTION__))
;
676 // Range expression
677 if (TestPluralRange(ValNo, Start, End))
678 return true;
679 }
680
681 // Scan for next or-expr part.
682 Start = std::find(Start, End, ',');
683 if (Start == End)
684 break;
685 ++Start;
686 }
687 return false;
688}
689
690/// HandlePluralModifier - Handle the integer 'plural' modifier. This is used
691/// for complex plural forms, or in languages where all plurals are complex.
692/// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are
693/// conditions that are tested in order, the form corresponding to the first
694/// that applies being emitted. The empty condition is always true, making the
695/// last form a default case.
696/// Conditions are simple boolean expressions, where n is the number argument.
697/// Here are the rules.
698/// condition := expression | empty
699/// empty := -> always true
700/// expression := numeric [',' expression] -> logical or
701/// numeric := range -> true if n in range
702/// | '%' number '=' range -> true if n % number in range
703/// range := number
704/// | '[' number ',' number ']' -> ranges are inclusive both ends
705///
706/// Here are some examples from the GNU gettext manual written in this form:
707/// English:
708/// {1:form0|:form1}
709/// Latvian:
710/// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0}
711/// Gaeilge:
712/// {1:form0|2:form1|:form2}
713/// Romanian:
714/// {1:form0|0,%100=[1,19]:form1|:form2}
715/// Lithuanian:
716/// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1}
717/// Russian (requires repeated form):
718/// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2}
719/// Slovak
720/// {1:form0|[2,4]:form1|:form2}
721/// Polish (requires repeated form):
722/// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2}
723static void HandlePluralModifier(const Diagnostic &DInfo, unsigned ValNo,
724 const char *Argument, unsigned ArgumentLen,
725 SmallVectorImpl<char> &OutStr) {
726 const char *ArgumentEnd = Argument + ArgumentLen;
727 while (true) {
1
Loop condition is true. Entering loop body
728 assert(Argument < ArgumentEnd && "Plural expression didn't match.")((Argument < ArgumentEnd && "Plural expression didn't match."
) ? static_cast<void> (0) : __assert_fail ("Argument < ArgumentEnd && \"Plural expression didn't match.\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 728, __PRETTY_FUNCTION__))
;
2
Assuming 'Argument' is < 'ArgumentEnd'
3
'?' condition is true
729 const char *ExprEnd = Argument;
730 while (*ExprEnd != ':') {
4
Assuming the condition is true
5
Loop condition is true. Entering loop body
8
Assuming the condition is true
9
Loop condition is true. Entering loop body
12
Assuming the condition is false
13
Loop condition is false. Execution continues on line 734
731 assert(ExprEnd != ArgumentEnd && "Plural missing expression end")((ExprEnd != ArgumentEnd && "Plural missing expression end"
) ? static_cast<void> (0) : __assert_fail ("ExprEnd != ArgumentEnd && \"Plural missing expression end\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 731, __PRETTY_FUNCTION__))
;
6
Assuming 'ExprEnd' is not equal to 'ArgumentEnd'
7
'?' condition is true
10
Assuming 'ExprEnd' is not equal to 'ArgumentEnd'
11
'?' condition is true
732 ++ExprEnd;
733 }
734 if (EvalPluralExpr(ValNo, Argument, ExprEnd)) {
14
Calling 'EvalPluralExpr'
735 Argument = ExprEnd + 1;
736 ExprEnd = ScanFormat(Argument, ArgumentEnd, '|');
737
738 // Recursively format the result of the plural clause into the
739 // output string.
740 DInfo.FormatDiagnostic(Argument, ExprEnd, OutStr);
741 return;
742 }
743 Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1;
744 }
745}
746
747/// Returns the friendly description for a token kind that will appear
748/// without quotes in diagnostic messages. These strings may be translatable in
749/// future.
750static const char *getTokenDescForDiagnostic(tok::TokenKind Kind) {
751 switch (Kind) {
752 case tok::identifier:
753 return "identifier";
754 default:
755 return nullptr;
756 }
757}
758
759/// FormatDiagnostic - Format this diagnostic into a string, substituting the
760/// formal arguments into the %0 slots. The result is appended onto the Str
761/// array.
762void Diagnostic::
763FormatDiagnostic(SmallVectorImpl<char> &OutStr) const {
764 if (!StoredDiagMessage.empty()) {
765 OutStr.append(StoredDiagMessage.begin(), StoredDiagMessage.end());
766 return;
767 }
768
769 StringRef Diag =
770 getDiags()->getDiagnosticIDs()->getDescription(getID());
771
772 FormatDiagnostic(Diag.begin(), Diag.end(), OutStr);
773}
774
775void Diagnostic::
776FormatDiagnostic(const char *DiagStr, const char *DiagEnd,
777 SmallVectorImpl<char> &OutStr) const {
778 // When the diagnostic string is only "%0", the entire string is being given
779 // by an outside source. Remove unprintable characters from this string
780 // and skip all the other string processing.
781 if (DiagEnd - DiagStr == 2 &&
782 StringRef(DiagStr, DiagEnd - DiagStr).equals("%0") &&
783 getArgKind(0) == DiagnosticsEngine::ak_std_string) {
784 const std::string &S = getArgStdStr(0);
785 for (char c : S) {
786 if (llvm::sys::locale::isPrint(c) || c == '\t') {
787 OutStr.push_back(c);
788 }
789 }
790 return;
791 }
792
793 /// FormattedArgs - Keep track of all of the arguments formatted by
794 /// ConvertArgToString and pass them into subsequent calls to
795 /// ConvertArgToString, allowing the implementation to avoid redundancies in
796 /// obvious cases.
797 SmallVector<DiagnosticsEngine::ArgumentValue, 8> FormattedArgs;
798
799 /// QualTypeVals - Pass a vector of arrays so that QualType names can be
800 /// compared to see if more information is needed to be printed.
801 SmallVector<intptr_t, 2> QualTypeVals;
802 SmallVector<char, 64> Tree;
803
804 for (unsigned i = 0, e = getNumArgs(); i < e; ++i)
805 if (getArgKind(i) == DiagnosticsEngine::ak_qualtype)
806 QualTypeVals.push_back(getRawArg(i));
807
808 while (DiagStr != DiagEnd) {
809 if (DiagStr[0] != '%') {
810 // Append non-%0 substrings to Str if we have one.
811 const char *StrEnd = std::find(DiagStr, DiagEnd, '%');
812 OutStr.append(DiagStr, StrEnd);
813 DiagStr = StrEnd;
814 continue;
815 } else if (isPunctuation(DiagStr[1])) {
816 OutStr.push_back(DiagStr[1]); // %% -> %.
817 DiagStr += 2;
818 continue;
819 }
820
821 // Skip the %.
822 ++DiagStr;
823
824 // This must be a placeholder for a diagnostic argument. The format for a
825 // placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0".
826 // The digit is a number from 0-9 indicating which argument this comes from.
827 // The modifier is a string of digits from the set [-a-z]+, arguments is a
828 // brace enclosed string.
829 const char *Modifier = nullptr, *Argument = nullptr;
830 unsigned ModifierLen = 0, ArgumentLen = 0;
831
832 // Check to see if we have a modifier. If so eat it.
833 if (!isDigit(DiagStr[0])) {
834 Modifier = DiagStr;
835 while (DiagStr[0] == '-' ||
836 (DiagStr[0] >= 'a' && DiagStr[0] <= 'z'))
837 ++DiagStr;
838 ModifierLen = DiagStr-Modifier;
839
840 // If we have an argument, get it next.
841 if (DiagStr[0] == '{') {
842 ++DiagStr; // Skip {.
843 Argument = DiagStr;
844
845 DiagStr = ScanFormat(DiagStr, DiagEnd, '}');
846 assert(DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!")((DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!"
) ? static_cast<void> (0) : __assert_fail ("DiagStr != DiagEnd && \"Mismatched {}'s in diagnostic string!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 846, __PRETTY_FUNCTION__))
;
847 ArgumentLen = DiagStr-Argument;
848 ++DiagStr; // Skip }.
849 }
850 }
851
852 assert(isDigit(*DiagStr) && "Invalid format for argument in diagnostic")((isDigit(*DiagStr) && "Invalid format for argument in diagnostic"
) ? static_cast<void> (0) : __assert_fail ("isDigit(*DiagStr) && \"Invalid format for argument in diagnostic\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 852, __PRETTY_FUNCTION__))
;
853 unsigned ArgNo = *DiagStr++ - '0';
854
855 // Only used for type diffing.
856 unsigned ArgNo2 = ArgNo;
857
858 DiagnosticsEngine::ArgumentKind Kind = getArgKind(ArgNo);
859 if (ModifierIs(Modifier, ModifierLen, "diff")) {
860 assert(*DiagStr == ',' && isDigit(*(DiagStr + 1)) &&((*DiagStr == ',' && isDigit(*(DiagStr + 1)) &&
"Invalid format for diff modifier") ? static_cast<void>
(0) : __assert_fail ("*DiagStr == ',' && isDigit(*(DiagStr + 1)) && \"Invalid format for diff modifier\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 861, __PRETTY_FUNCTION__))
861 "Invalid format for diff modifier")((*DiagStr == ',' && isDigit(*(DiagStr + 1)) &&
"Invalid format for diff modifier") ? static_cast<void>
(0) : __assert_fail ("*DiagStr == ',' && isDigit(*(DiagStr + 1)) && \"Invalid format for diff modifier\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 861, __PRETTY_FUNCTION__))
;
862 ++DiagStr; // Comma.
863 ArgNo2 = *DiagStr++ - '0';
864 DiagnosticsEngine::ArgumentKind Kind2 = getArgKind(ArgNo2);
865 if (Kind == DiagnosticsEngine::ak_qualtype &&
866 Kind2 == DiagnosticsEngine::ak_qualtype)
867 Kind = DiagnosticsEngine::ak_qualtype_pair;
868 else {
869 // %diff only supports QualTypes. For other kinds of arguments,
870 // use the default printing. For example, if the modifier is:
871 // "%diff{compare $ to $|other text}1,2"
872 // treat it as:
873 // "compare %1 to %2"
874 const char *ArgumentEnd = Argument + ArgumentLen;
875 const char *Pipe = ScanFormat(Argument, ArgumentEnd, '|');
876 assert(ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd &&((ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd &&
"Found too many '|'s in a %diff modifier!") ? static_cast<
void> (0) : __assert_fail ("ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd && \"Found too many '|'s in a %diff modifier!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 877, __PRETTY_FUNCTION__))
877 "Found too many '|'s in a %diff modifier!")((ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd &&
"Found too many '|'s in a %diff modifier!") ? static_cast<
void> (0) : __assert_fail ("ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd && \"Found too many '|'s in a %diff modifier!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 877, __PRETTY_FUNCTION__))
;
878 const char *FirstDollar = ScanFormat(Argument, Pipe, '$');
879 const char *SecondDollar = ScanFormat(FirstDollar + 1, Pipe, '$');
880 const char ArgStr1[] = { '%', static_cast<char>('0' + ArgNo) };
881 const char ArgStr2[] = { '%', static_cast<char>('0' + ArgNo2) };
882 FormatDiagnostic(Argument, FirstDollar, OutStr);
883 FormatDiagnostic(ArgStr1, ArgStr1 + 2, OutStr);
884 FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr);
885 FormatDiagnostic(ArgStr2, ArgStr2 + 2, OutStr);
886 FormatDiagnostic(SecondDollar + 1, Pipe, OutStr);
887 continue;
888 }
889 }
890
891 switch (Kind) {
892 // ---- STRINGS ----
893 case DiagnosticsEngine::ak_std_string: {
894 const std::string &S = getArgStdStr(ArgNo);
895 assert(ModifierLen == 0 && "No modifiers for strings yet")((ModifierLen == 0 && "No modifiers for strings yet")
? static_cast<void> (0) : __assert_fail ("ModifierLen == 0 && \"No modifiers for strings yet\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 895, __PRETTY_FUNCTION__))
;
896 OutStr.append(S.begin(), S.end());
897 break;
898 }
899 case DiagnosticsEngine::ak_c_string: {
900 const char *S = getArgCStr(ArgNo);
901 assert(ModifierLen == 0 && "No modifiers for strings yet")((ModifierLen == 0 && "No modifiers for strings yet")
? static_cast<void> (0) : __assert_fail ("ModifierLen == 0 && \"No modifiers for strings yet\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 901, __PRETTY_FUNCTION__))
;
902
903 // Don't crash if get passed a null pointer by accident.
904 if (!S)
905 S = "(null)";
906
907 OutStr.append(S, S + strlen(S));
908 break;
909 }
910 // ---- INTEGERS ----
911 case DiagnosticsEngine::ak_sint: {
912 int Val = getArgSInt(ArgNo);
913
914 if (ModifierIs(Modifier, ModifierLen, "select")) {
915 HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen,
916 OutStr);
917 } else if (ModifierIs(Modifier, ModifierLen, "s")) {
918 HandleIntegerSModifier(Val, OutStr);
919 } else if (ModifierIs(Modifier, ModifierLen, "plural")) {
920 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
921 OutStr);
922 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
923 HandleOrdinalModifier((unsigned)Val, OutStr);
924 } else {
925 assert(ModifierLen == 0 && "Unknown integer modifier")((ModifierLen == 0 && "Unknown integer modifier") ? static_cast
<void> (0) : __assert_fail ("ModifierLen == 0 && \"Unknown integer modifier\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 925, __PRETTY_FUNCTION__))
;
926 llvm::raw_svector_ostream(OutStr) << Val;
927 }
928 break;
929 }
930 case DiagnosticsEngine::ak_uint: {
931 unsigned Val = getArgUInt(ArgNo);
932
933 if (ModifierIs(Modifier, ModifierLen, "select")) {
934 HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr);
935 } else if (ModifierIs(Modifier, ModifierLen, "s")) {
936 HandleIntegerSModifier(Val, OutStr);
937 } else if (ModifierIs(Modifier, ModifierLen, "plural")) {
938 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
939 OutStr);
940 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
941 HandleOrdinalModifier(Val, OutStr);
942 } else {
943 assert(ModifierLen == 0 && "Unknown integer modifier")((ModifierLen == 0 && "Unknown integer modifier") ? static_cast
<void> (0) : __assert_fail ("ModifierLen == 0 && \"Unknown integer modifier\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 943, __PRETTY_FUNCTION__))
;
944 llvm::raw_svector_ostream(OutStr) << Val;
945 }
946 break;
947 }
948 // ---- TOKEN SPELLINGS ----
949 case DiagnosticsEngine::ak_tokenkind: {
950 tok::TokenKind Kind = static_cast<tok::TokenKind>(getRawArg(ArgNo));
951 assert(ModifierLen == 0 && "No modifiers for token kinds yet")((ModifierLen == 0 && "No modifiers for token kinds yet"
) ? static_cast<void> (0) : __assert_fail ("ModifierLen == 0 && \"No modifiers for token kinds yet\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 951, __PRETTY_FUNCTION__))
;
952
953 llvm::raw_svector_ostream Out(OutStr);
954 if (const char *S = tok::getPunctuatorSpelling(Kind))
955 // Quoted token spelling for punctuators.
956 Out << '\'' << S << '\'';
957 else if (const char *S = tok::getKeywordSpelling(Kind))
958 // Unquoted token spelling for keywords.
959 Out << S;
960 else if (const char *S = getTokenDescForDiagnostic(Kind))
961 // Unquoted translatable token name.
962 Out << S;
963 else if (const char *S = tok::getTokenName(Kind))
964 // Debug name, shouldn't appear in user-facing diagnostics.
965 Out << '<' << S << '>';
966 else
967 Out << "(null)";
968 break;
969 }
970 // ---- NAMES and TYPES ----
971 case DiagnosticsEngine::ak_identifierinfo: {
972 const IdentifierInfo *II = getArgIdentifier(ArgNo);
973 assert(ModifierLen == 0 && "No modifiers for strings yet")((ModifierLen == 0 && "No modifiers for strings yet")
? static_cast<void> (0) : __assert_fail ("ModifierLen == 0 && \"No modifiers for strings yet\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 973, __PRETTY_FUNCTION__))
;
974
975 // Don't crash if get passed a null pointer by accident.
976 if (!II) {
977 const char *S = "(null)";
978 OutStr.append(S, S + strlen(S));
979 continue;
980 }
981
982 llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\'';
983 break;
984 }
985 case DiagnosticsEngine::ak_addrspace:
986 case DiagnosticsEngine::ak_qual:
987 case DiagnosticsEngine::ak_qualtype:
988 case DiagnosticsEngine::ak_declarationname:
989 case DiagnosticsEngine::ak_nameddecl:
990 case DiagnosticsEngine::ak_nestednamespec:
991 case DiagnosticsEngine::ak_declcontext:
992 case DiagnosticsEngine::ak_attr:
993 getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo),
994 StringRef(Modifier, ModifierLen),
995 StringRef(Argument, ArgumentLen),
996 FormattedArgs,
997 OutStr, QualTypeVals);
998 break;
999 case DiagnosticsEngine::ak_qualtype_pair: {
1000 // Create a struct with all the info needed for printing.
1001 TemplateDiffTypes TDT;
1002 TDT.FromType = getRawArg(ArgNo);
1003 TDT.ToType = getRawArg(ArgNo2);
1004 TDT.ElideType = getDiags()->ElideType;
1005 TDT.ShowColors = getDiags()->ShowColors;
1006 TDT.TemplateDiffUsed = false;
1007 intptr_t val = reinterpret_cast<intptr_t>(&TDT);
1008
1009 const char *ArgumentEnd = Argument + ArgumentLen;
1010 const char *Pipe = ScanFormat(Argument, ArgumentEnd, '|');
1011
1012 // Print the tree. If this diagnostic already has a tree, skip the
1013 // second tree.
1014 if (getDiags()->PrintTemplateTree && Tree.empty()) {
1015 TDT.PrintFromType = true;
1016 TDT.PrintTree = true;
1017 getDiags()->ConvertArgToString(Kind, val,
1018 StringRef(Modifier, ModifierLen),
1019 StringRef(Argument, ArgumentLen),
1020 FormattedArgs,
1021 Tree, QualTypeVals);
1022 // If there is no tree information, fall back to regular printing.
1023 if (!Tree.empty()) {
1024 FormatDiagnostic(Pipe + 1, ArgumentEnd, OutStr);
1025 break;
1026 }
1027 }
1028
1029 // Non-tree printing, also the fall-back when tree printing fails.
1030 // The fall-back is triggered when the types compared are not templates.
1031 const char *FirstDollar = ScanFormat(Argument, ArgumentEnd, '$');
1032 const char *SecondDollar = ScanFormat(FirstDollar + 1, ArgumentEnd, '$');
1033
1034 // Append before text
1035 FormatDiagnostic(Argument, FirstDollar, OutStr);
1036
1037 // Append first type
1038 TDT.PrintTree = false;
1039 TDT.PrintFromType = true;
1040 getDiags()->ConvertArgToString(Kind, val,
1041 StringRef(Modifier, ModifierLen),
1042 StringRef(Argument, ArgumentLen),
1043 FormattedArgs,
1044 OutStr, QualTypeVals);
1045 if (!TDT.TemplateDiffUsed)
1046 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype,
1047 TDT.FromType));
1048
1049 // Append middle text
1050 FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr);
1051
1052 // Append second type
1053 TDT.PrintFromType = false;
1054 getDiags()->ConvertArgToString(Kind, val,
1055 StringRef(Modifier, ModifierLen),
1056 StringRef(Argument, ArgumentLen),
1057 FormattedArgs,
1058 OutStr, QualTypeVals);
1059 if (!TDT.TemplateDiffUsed)
1060 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype,
1061 TDT.ToType));
1062
1063 // Append end text
1064 FormatDiagnostic(SecondDollar + 1, Pipe, OutStr);
1065 break;
1066 }
1067 }
1068
1069 // Remember this argument info for subsequent formatting operations. Turn
1070 // std::strings into a null terminated string to make it be the same case as
1071 // all the other ones.
1072 if (Kind == DiagnosticsEngine::ak_qualtype_pair)
1073 continue;
1074 else if (Kind != DiagnosticsEngine::ak_std_string)
1075 FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo)));
1076 else
1077 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_c_string,
1078 (intptr_t)getArgStdStr(ArgNo).c_str()));
1079 }
1080
1081 // Append the type tree to the end of the diagnostics.
1082 OutStr.append(Tree.begin(), Tree.end());
1083}
1084
1085StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID,
1086 StringRef Message)
1087 : ID(ID), Level(Level), Message(Message) {}
1088
1089StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level,
1090 const Diagnostic &Info)
1091 : ID(Info.getID()), Level(Level) {
1092 assert((Info.getLocation().isInvalid() || Info.hasSourceManager()) &&(((Info.getLocation().isInvalid() || Info.hasSourceManager())
&& "Valid source location without setting a source manager for diagnostic"
) ? static_cast<void> (0) : __assert_fail ("(Info.getLocation().isInvalid() || Info.hasSourceManager()) && \"Valid source location without setting a source manager for diagnostic\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 1093, __PRETTY_FUNCTION__))
1093 "Valid source location without setting a source manager for diagnostic")(((Info.getLocation().isInvalid() || Info.hasSourceManager())
&& "Valid source location without setting a source manager for diagnostic"
) ? static_cast<void> (0) : __assert_fail ("(Info.getLocation().isInvalid() || Info.hasSourceManager()) && \"Valid source location without setting a source manager for diagnostic\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 1093, __PRETTY_FUNCTION__))
;
1094 if (Info.getLocation().isValid())
1095 Loc = FullSourceLoc(Info.getLocation(), Info.getSourceManager());
1096 SmallString<64> Message;
1097 Info.FormatDiagnostic(Message);
1098 this->Message.assign(Message.begin(), Message.end());
1099 this->Ranges.assign(Info.getRanges().begin(), Info.getRanges().end());
1100 this->FixIts.assign(Info.getFixItHints().begin(), Info.getFixItHints().end());
1101}
1102
1103StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID,
1104 StringRef Message, FullSourceLoc Loc,
1105 ArrayRef<CharSourceRange> Ranges,
1106 ArrayRef<FixItHint> FixIts)
1107 : ID(ID), Level(Level), Loc(Loc), Message(Message),
1108 Ranges(Ranges.begin(), Ranges.end()), FixIts(FixIts.begin(), FixIts.end())
1109{
1110}
1111
1112/// IncludeInDiagnosticCounts - This method (whose default implementation
1113/// returns true) indicates whether the diagnostics handled by this
1114/// DiagnosticConsumer should be included in the number of diagnostics
1115/// reported by DiagnosticsEngine.
1116bool DiagnosticConsumer::IncludeInDiagnosticCounts() const { return true; }
1117
1118void IgnoringDiagConsumer::anchor() {}
1119
1120ForwardingDiagnosticConsumer::~ForwardingDiagnosticConsumer() = default;
1121
1122void ForwardingDiagnosticConsumer::HandleDiagnostic(
1123 DiagnosticsEngine::Level DiagLevel,
1124 const Diagnostic &Info) {
1125 Target.HandleDiagnostic(DiagLevel, Info);
1126}
1127
1128void ForwardingDiagnosticConsumer::clear() {
1129 DiagnosticConsumer::clear();
1130 Target.clear();
1131}
1132
1133bool ForwardingDiagnosticConsumer::IncludeInDiagnosticCounts() const {
1134 return Target.IncludeInDiagnosticCounts();
1135}
1136
1137PartialDiagnostic::StorageAllocator::StorageAllocator() {
1138 for (unsigned I = 0; I != NumCached; ++I)
1139 FreeList[I] = Cached + I;
1140 NumFreeListEntries = NumCached;
1141}
1142
1143PartialDiagnostic::StorageAllocator::~StorageAllocator() {
1144 // Don't assert if we are in a CrashRecovery context, as this invariant may
1145 // be invalidated during a crash.
1146 assert((NumFreeListEntries == NumCached ||(((NumFreeListEntries == NumCached || llvm::CrashRecoveryContext
::isRecoveringFromCrash()) && "A partial is on the lam"
) ? static_cast<void> (0) : __assert_fail ("(NumFreeListEntries == NumCached || llvm::CrashRecoveryContext::isRecoveringFromCrash()) && \"A partial is on the lam\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 1148, __PRETTY_FUNCTION__))
1147 llvm::CrashRecoveryContext::isRecoveringFromCrash()) &&(((NumFreeListEntries == NumCached || llvm::CrashRecoveryContext
::isRecoveringFromCrash()) && "A partial is on the lam"
) ? static_cast<void> (0) : __assert_fail ("(NumFreeListEntries == NumCached || llvm::CrashRecoveryContext::isRecoveringFromCrash()) && \"A partial is on the lam\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 1148, __PRETTY_FUNCTION__))
1148 "A partial is on the lam")(((NumFreeListEntries == NumCached || llvm::CrashRecoveryContext
::isRecoveringFromCrash()) && "A partial is on the lam"
) ? static_cast<void> (0) : __assert_fail ("(NumFreeListEntries == NumCached || llvm::CrashRecoveryContext::isRecoveringFromCrash()) && \"A partial is on the lam\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Basic/Diagnostic.cpp"
, 1148, __PRETTY_FUNCTION__))
;
1149}
1150
1151char DiagnosticError::ID;