Bug Summary

File:tools/clang/lib/Basic/Diagnostic.cpp
Warning:line 671, column 31
Division by zero

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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 -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-8/lib/clang/8.0.0 -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-8~svn350071/build-llvm/tools/clang/lib/Basic -I /build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Basic -I /build/llvm-toolchain-snapshot-8~svn350071/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/include -I /build/llvm-toolchain-snapshot-8~svn350071/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/include/clang/8.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-8/lib/clang/8.0.0/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++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-8~svn350071/build-llvm/tools/clang/lib/Basic -fdebug-prefix-map=/build/llvm-toolchain-snapshot-8~svn350071=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-12-27-042839-1215-1 -x c++ /build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp -faddrsig
1//===- Diagnostic.cpp - C Language Family Diagnostic Handling -------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the Diagnostic-related interfaces.
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/Basic/Diagnostic.h"
15#include "clang/Basic/CharInfo.h"
16#include "clang/Basic/DiagnosticError.h"
17#include "clang/Basic/DiagnosticIDs.h"
18#include "clang/Basic/DiagnosticOptions.h"
19#include "clang/Basic/IdentifierTable.h"
20#include "clang/Basic/PartialDiagnostic.h"
21#include "clang/Basic/SourceLocation.h"
22#include "clang/Basic/SourceManager.h"
23#include "clang/Basic/Specifiers.h"
24#include "clang/Basic/TokenKinds.h"
25#include "llvm/ADT/SmallString.h"
26#include "llvm/ADT/SmallVector.h"
27#include "llvm/ADT/StringExtras.h"
28#include "llvm/ADT/StringRef.h"
29#include "llvm/Support/CrashRecoveryContext.h"
30#include "llvm/Support/Locale.h"
31#include "llvm/Support/raw_ostream.h"
32#include <algorithm>
33#include <cassert>
34#include <cstddef>
35#include <cstdint>
36#include <cstring>
37#include <limits>
38#include <string>
39#include <utility>
40#include <vector>
41
42using namespace clang;
43
44const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
45 DiagNullabilityKind nullability) {
46 StringRef string;
47 switch (nullability.first) {
48 case NullabilityKind::NonNull:
49 string = nullability.second ? "'nonnull'" : "'_Nonnull'";
50 break;
51
52 case NullabilityKind::Nullable:
53 string = nullability.second ? "'nullable'" : "'_Nullable'";
54 break;
55
56 case NullabilityKind::Unspecified:
57 string = nullability.second ? "'null_unspecified'" : "'_Null_unspecified'";
58 break;
59 }
60
61 DB.AddString(string);
62 return DB;
63}
64
65static void DummyArgToStringFn(DiagnosticsEngine::ArgumentKind AK, intptr_t QT,
66 StringRef Modifier, StringRef Argument,
67 ArrayRef<DiagnosticsEngine::ArgumentValue> PrevArgs,
68 SmallVectorImpl<char> &Output,
69 void *Cookie,
70 ArrayRef<intptr_t> QualTypeVals) {
71 StringRef Str = "<can't format argument>";
72 Output.append(Str.begin(), Str.end());
73}
74
75DiagnosticsEngine::DiagnosticsEngine(
76 IntrusiveRefCntPtr<DiagnosticIDs> diags,
77 IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts, DiagnosticConsumer *client,
78 bool ShouldOwnClient)
79 : Diags(std::move(diags)), DiagOpts(std::move(DiagOpts)) {
80 setClient(client, ShouldOwnClient);
81 ArgToStringFn = DummyArgToStringFn;
82
83 Reset();
84}
85
86DiagnosticsEngine::~DiagnosticsEngine() {
87 // If we own the diagnostic client, destroy it first so that it can access the
88 // engine from its destructor.
89 setClient(nullptr);
90}
91
92void DiagnosticsEngine::dump() const {
93 DiagStatesByLoc.dump(*SourceMgr);
94}
95
96void DiagnosticsEngine::dump(StringRef DiagName) const {
97 DiagStatesByLoc.dump(*SourceMgr, DiagName);
98}
99
100void DiagnosticsEngine::setClient(DiagnosticConsumer *client,
101 bool ShouldOwnClient) {
102 Owner.reset(ShouldOwnClient ? client : nullptr);
103 Client = client;
104}
105
106void DiagnosticsEngine::pushMappings(SourceLocation Loc) {
107 DiagStateOnPushStack.push_back(GetCurDiagState());
108}
109
110bool DiagnosticsEngine::popMappings(SourceLocation Loc) {
111 if (DiagStateOnPushStack.empty())
112 return false;
113
114 if (DiagStateOnPushStack.back() != GetCurDiagState()) {
115 // State changed at some point between push/pop.
116 PushDiagStatePoint(DiagStateOnPushStack.back(), Loc);
117 }
118 DiagStateOnPushStack.pop_back();
119 return true;
120}
121
122void DiagnosticsEngine::Reset() {
123 ErrorOccurred = false;
124 UncompilableErrorOccurred = false;
125 FatalErrorOccurred = false;
126 UnrecoverableErrorOccurred = false;
127
128 NumWarnings = 0;
129 NumErrors = 0;
130 TrapNumErrorsOccurred = 0;
131 TrapNumUnrecoverableErrorsOccurred = 0;
132
133 CurDiagID = std::numeric_limits<unsigned>::max();
134 LastDiagLevel = DiagnosticIDs::Ignored;
135 DelayedDiagID = 0;
136
137 // Clear state related to #pragma diagnostic.
138 DiagStates.clear();
139 DiagStatesByLoc.clear();
140 DiagStateOnPushStack.clear();
141
142 // Create a DiagState and DiagStatePoint representing diagnostic changes
143 // through command-line.
144 DiagStates.emplace_back();
145 DiagStatesByLoc.appendFirst(&DiagStates.back());
146}
147
148void DiagnosticsEngine::SetDelayedDiagnostic(unsigned DiagID, StringRef Arg1,
149 StringRef Arg2) {
150 if (DelayedDiagID)
151 return;
152
153 DelayedDiagID = DiagID;
154 DelayedDiagArg1 = Arg1.str();
155 DelayedDiagArg2 = Arg2.str();
156}
157
158void DiagnosticsEngine::ReportDelayed() {
159 unsigned ID = DelayedDiagID;
160 DelayedDiagID = 0;
161 Report(ID) << DelayedDiagArg1 << DelayedDiagArg2;
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-8~svn350071/tools/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-8~svn350071/tools/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 = std::upper_bound(
210 StateTransitions.begin(), StateTransitions.end(), Offset,
211 [](unsigned Offset, const DiagStatePoint &P) {
212 return Offset < P.Offset;
213 });
214 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 214, __PRETTY_FUNCTION__))
;
215 return OnePastIt[-1].State;
216}
217
218DiagnosticsEngine::DiagStateMap::File *
219DiagnosticsEngine::DiagStateMap::getFile(SourceManager &SrcMgr,
220 FileID ID) const {
221 // Get or insert the File for this ID.
222 auto Range = Files.equal_range(ID);
223 if (Range.first != Range.second)
224 return &Range.first->second;
225 auto &F = Files.insert(Range.first, std::make_pair(ID, File()))->second;
226
227 // We created a new File; look up the diagnostic state at the start of it and
228 // initialize it.
229 if (ID.isValid()) {
230 std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedIncludedLoc(ID);
231 F.Parent = getFile(SrcMgr, Decomp.first);
232 F.ParentOffset = Decomp.second;
233 F.StateTransitions.push_back({F.Parent->lookup(Decomp.second), 0});
234 } else {
235 // This is the (imaginary) root file into which we pretend all top-level
236 // files are included; it descends from the initial state.
237 //
238 // FIXME: This doesn't guarantee that we use the same ordering as
239 // isBeforeInTranslationUnit in the cases where someone invented another
240 // top-level file and added diagnostic pragmas to it. See the code at the
241 // end of isBeforeInTranslationUnit for the quirks it deals with.
242 F.StateTransitions.push_back({FirstDiagState, 0});
243 }
244 return &F;
245}
246
247void DiagnosticsEngine::DiagStateMap::dump(SourceManager &SrcMgr,
248 StringRef DiagName) const {
249 llvm::errs() << "diagnostic state at ";
250 CurDiagStateLoc.print(llvm::errs(), SrcMgr);
251 llvm::errs() << ": " << CurDiagState << "\n";
252
253 for (auto &F : Files) {
254 FileID ID = F.first;
255 File &File = F.second;
256
257 bool PrintedOuterHeading = false;
258 auto PrintOuterHeading = [&] {
259 if (PrintedOuterHeading) return;
260 PrintedOuterHeading = true;
261
262 llvm::errs() << "File " << &File << " <FileID " << ID.getHashValue()
263 << ">: " << SrcMgr.getBuffer(ID)->getBufferIdentifier();
264 if (F.second.Parent) {
265 std::pair<FileID, unsigned> Decomp =
266 SrcMgr.getDecomposedIncludedLoc(ID);
267 assert(File.ParentOffset == Decomp.second)((File.ParentOffset == Decomp.second) ? static_cast<void>
(0) : __assert_fail ("File.ParentOffset == Decomp.second", "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 267, __PRETTY_FUNCTION__))
;
268 llvm::errs() << " parent " << File.Parent << " <FileID "
269 << Decomp.first.getHashValue() << "> ";
270 SrcMgr.getLocForStartOfFile(Decomp.first)
271 .getLocWithOffset(Decomp.second)
272 .print(llvm::errs(), SrcMgr);
273 }
274 if (File.HasLocalTransitions)
275 llvm::errs() << " has_local_transitions";
276 llvm::errs() << "\n";
277 };
278
279 if (DiagName.empty())
280 PrintOuterHeading();
281
282 for (DiagStatePoint &Transition : File.StateTransitions) {
283 bool PrintedInnerHeading = false;
284 auto PrintInnerHeading = [&] {
285 if (PrintedInnerHeading) return;
286 PrintedInnerHeading = true;
287
288 PrintOuterHeading();
289 llvm::errs() << " ";
290 SrcMgr.getLocForStartOfFile(ID)
291 .getLocWithOffset(Transition.Offset)
292 .print(llvm::errs(), SrcMgr);
293 llvm::errs() << ": state " << Transition.State << ":\n";
294 };
295
296 if (DiagName.empty())
297 PrintInnerHeading();
298
299 for (auto &Mapping : *Transition.State) {
300 StringRef Option =
301 DiagnosticIDs::getWarningOptionForDiag(Mapping.first);
302 if (!DiagName.empty() && DiagName != Option)
303 continue;
304
305 PrintInnerHeading();
306 llvm::errs() << " ";
307 if (Option.empty())
308 llvm::errs() << "<unknown " << Mapping.first << ">";
309 else
310 llvm::errs() << Option;
311 llvm::errs() << ": ";
312
313 switch (Mapping.second.getSeverity()) {
314 case diag::Severity::Ignored: llvm::errs() << "ignored"; break;
315 case diag::Severity::Remark: llvm::errs() << "remark"; break;
316 case diag::Severity::Warning: llvm::errs() << "warning"; break;
317 case diag::Severity::Error: llvm::errs() << "error"; break;
318 case diag::Severity::Fatal: llvm::errs() << "fatal"; break;
319 }
320
321 if (!Mapping.second.isUser())
322 llvm::errs() << " default";
323 if (Mapping.second.isPragma())
324 llvm::errs() << " pragma";
325 if (Mapping.second.hasNoWarningAsError())
326 llvm::errs() << " no-error";
327 if (Mapping.second.hasNoErrorAsFatal())
328 llvm::errs() << " no-fatal";
329 if (Mapping.second.wasUpgradedFromWarning())
330 llvm::errs() << " overruled";
331 llvm::errs() << "\n";
332 }
333 }
334 }
335}
336
337void DiagnosticsEngine::PushDiagStatePoint(DiagState *State,
338 SourceLocation Loc) {
339 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 339, __PRETTY_FUNCTION__))
;
340 DiagStatesByLoc.append(*SourceMgr, Loc, State);
341}
342
343void DiagnosticsEngine::setSeverity(diag::kind Diag, diag::Severity Map,
344 SourceLocation L) {
345 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 346, __PRETTY_FUNCTION__))
346 "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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 346, __PRETTY_FUNCTION__))
;
347 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 349, __PRETTY_FUNCTION__))
348 (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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 349, __PRETTY_FUNCTION__))
349 "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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 349, __PRETTY_FUNCTION__))
;
350 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 350, __PRETTY_FUNCTION__))
;
351
352 // Don't allow a mapping to a warning override an error/fatal mapping.
353 bool WasUpgradedFromWarning = false;
354 if (Map == diag::Severity::Warning) {
355 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
356 if (Info.getSeverity() == diag::Severity::Error ||
357 Info.getSeverity() == diag::Severity::Fatal) {
358 Map = Info.getSeverity();
359 WasUpgradedFromWarning = true;
360 }
361 }
362 DiagnosticMapping Mapping = makeUserMapping(Map, L);
363 Mapping.setUpgradedFromWarning(WasUpgradedFromWarning);
364
365 // Common case; setting all the diagnostics of a group in one place.
366 if ((L.isInvalid() || L == DiagStatesByLoc.getCurDiagStateLoc()) &&
367 DiagStatesByLoc.getCurDiagState()) {
368 // FIXME: This is theoretically wrong: if the current state is shared with
369 // some other location (via push/pop) we will change the state for that
370 // other location as well. This cannot currently happen, as we can't update
371 // the diagnostic state at the same location at which we pop.
372 DiagStatesByLoc.getCurDiagState()->setMapping(Diag, Mapping);
373 return;
374 }
375
376 // A diagnostic pragma occurred, create a new DiagState initialized with
377 // the current one and a new DiagStatePoint to record at which location
378 // the new state became active.
379 DiagStates.push_back(*GetCurDiagState());
380 DiagStates.back().setMapping(Diag, Mapping);
381 PushDiagStatePoint(&DiagStates.back(), L);
382}
383
384bool DiagnosticsEngine::setSeverityForGroup(diag::Flavor Flavor,
385 StringRef Group, diag::Severity Map,
386 SourceLocation Loc) {
387 // Get the diagnostics in this group.
388 SmallVector<diag::kind, 256> GroupDiags;
389 if (Diags->getDiagnosticsInGroup(Flavor, Group, GroupDiags))
390 return true;
391
392 // Set the mapping.
393 for (diag::kind Diag : GroupDiags)
394 setSeverity(Diag, Map, Loc);
395
396 return false;
397}
398
399bool DiagnosticsEngine::setDiagnosticGroupWarningAsError(StringRef Group,
400 bool Enabled) {
401 // If we are enabling this feature, just set the diagnostic mappings to map to
402 // errors.
403 if (Enabled)
404 return setSeverityForGroup(diag::Flavor::WarningOrError, Group,
405 diag::Severity::Error);
406
407 // Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and
408 // potentially downgrade anything already mapped to be a warning.
409
410 // Get the diagnostics in this group.
411 SmallVector<diag::kind, 8> GroupDiags;
412 if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group,
413 GroupDiags))
414 return true;
415
416 // Perform the mapping change.
417 for (diag::kind Diag : GroupDiags) {
418 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
419
420 if (Info.getSeverity() == diag::Severity::Error ||
421 Info.getSeverity() == diag::Severity::Fatal)
422 Info.setSeverity(diag::Severity::Warning);
423
424 Info.setNoWarningAsError(true);
425 }
426
427 return false;
428}
429
430bool DiagnosticsEngine::setDiagnosticGroupErrorAsFatal(StringRef Group,
431 bool Enabled) {
432 // If we are enabling this feature, just set the diagnostic mappings to map to
433 // fatal errors.
434 if (Enabled)
435 return setSeverityForGroup(diag::Flavor::WarningOrError, Group,
436 diag::Severity::Fatal);
437
438 // Otherwise, we want to set the diagnostic mapping's "no Wfatal-errors" bit,
439 // and potentially downgrade anything already mapped to be a fatal error.
440
441 // Get the diagnostics in this group.
442 SmallVector<diag::kind, 8> GroupDiags;
443 if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group,
444 GroupDiags))
445 return true;
446
447 // Perform the mapping change.
448 for (diag::kind Diag : GroupDiags) {
449 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
450
451 if (Info.getSeverity() == diag::Severity::Fatal)
452 Info.setSeverity(diag::Severity::Error);
453
454 Info.setNoErrorAsFatal(true);
455 }
456
457 return false;
458}
459
460void DiagnosticsEngine::setSeverityForAll(diag::Flavor Flavor,
461 diag::Severity Map,
462 SourceLocation Loc) {
463 // Get all the diagnostics.
464 std::vector<diag::kind> AllDiags;
465 DiagnosticIDs::getAllDiagnostics(Flavor, AllDiags);
466
467 // Set the mapping.
468 for (diag::kind Diag : AllDiags)
469 if (Diags->isBuiltinWarningOrExtension(Diag))
470 setSeverity(Diag, Map, Loc);
471}
472
473void DiagnosticsEngine::Report(const StoredDiagnostic &storedDiag) {
474 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 475, __PRETTY_FUNCTION__))
475 "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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 475, __PRETTY_FUNCTION__))
;
476
477 CurDiagLoc = storedDiag.getLocation();
478 CurDiagID = storedDiag.getID();
479 NumDiagArgs = 0;
480
481 DiagRanges.clear();
482 DiagRanges.append(storedDiag.range_begin(), storedDiag.range_end());
483
484 DiagFixItHints.clear();
485 DiagFixItHints.append(storedDiag.fixit_begin(), storedDiag.fixit_end());
486
487 assert(Client && "DiagnosticConsumer not set!")((Client && "DiagnosticConsumer not set!") ? static_cast
<void> (0) : __assert_fail ("Client && \"DiagnosticConsumer not set!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 487, __PRETTY_FUNCTION__))
;
488 Level DiagLevel = storedDiag.getLevel();
489 Diagnostic Info(this, storedDiag.getMessage());
490 Client->HandleDiagnostic(DiagLevel, Info);
491 if (Client->IncludeInDiagnosticCounts()) {
492 if (DiagLevel == DiagnosticsEngine::Warning)
493 ++NumWarnings;
494 }
495
496 CurDiagID = std::numeric_limits<unsigned>::max();
497}
498
499bool DiagnosticsEngine::EmitCurrentDiagnostic(bool Force) {
500 assert(getClient() && "DiagnosticClient not set!")((getClient() && "DiagnosticClient not set!") ? static_cast
<void> (0) : __assert_fail ("getClient() && \"DiagnosticClient not set!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 500, __PRETTY_FUNCTION__))
;
501
502 bool Emitted;
503 if (Force) {
504 Diagnostic Info(this);
505
506 // Figure out the diagnostic level of this message.
507 DiagnosticIDs::Level DiagLevel
508 = Diags->getDiagnosticLevel(Info.getID(), Info.getLocation(), *this);
509
510 Emitted = (DiagLevel != DiagnosticIDs::Ignored);
511 if (Emitted) {
512 // Emit the diagnostic regardless of suppression level.
513 Diags->EmitDiag(*this, DiagLevel);
514 }
515 } else {
516 // Process the diagnostic, sending the accumulated information to the
517 // DiagnosticConsumer.
518 Emitted = ProcessDiag();
519 }
520
521 // Clear out the current diagnostic object.
522 Clear();
523
524 // If there was a delayed diagnostic, emit it now.
525 if (!Force && DelayedDiagID)
526 ReportDelayed();
527
528 return Emitted;
529}
530
531DiagnosticConsumer::~DiagnosticConsumer() = default;
532
533void DiagnosticConsumer::HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
534 const Diagnostic &Info) {
535 if (!IncludeInDiagnosticCounts())
536 return;
537
538 if (DiagLevel == DiagnosticsEngine::Warning)
539 ++NumWarnings;
540 else if (DiagLevel >= DiagnosticsEngine::Error)
541 ++NumErrors;
542}
543
544/// ModifierIs - Return true if the specified modifier matches specified string.
545template <std::size_t StrLen>
546static bool ModifierIs(const char *Modifier, unsigned ModifierLen,
547 const char (&Str)[StrLen]) {
548 return StrLen-1 == ModifierLen && memcmp(Modifier, Str, StrLen-1) == 0;
549}
550
551/// ScanForward - Scans forward, looking for the given character, skipping
552/// nested clauses and escaped characters.
553static const char *ScanFormat(const char *I, const char *E, char Target) {
554 unsigned Depth = 0;
555
556 for ( ; I != E; ++I) {
557 if (Depth == 0 && *I == Target) return I;
558 if (Depth != 0 && *I == '}') Depth--;
559
560 if (*I == '%') {
561 I++;
562 if (I == E) break;
563
564 // Escaped characters get implicitly skipped here.
565
566 // Format specifier.
567 if (!isDigit(*I) && !isPunctuation(*I)) {
568 for (I++; I != E && !isDigit(*I) && *I != '{'; I++) ;
569 if (I == E) break;
570 if (*I == '{')
571 Depth++;
572 }
573 }
574 }
575 return E;
576}
577
578/// HandleSelectModifier - Handle the integer 'select' modifier. This is used
579/// like this: %select{foo|bar|baz}2. This means that the integer argument
580/// "%2" has a value from 0-2. If the value is 0, the diagnostic prints 'foo'.
581/// If the value is 1, it prints 'bar'. If it has the value 2, it prints 'baz'.
582/// This is very useful for certain classes of variant diagnostics.
583static void HandleSelectModifier(const Diagnostic &DInfo, unsigned ValNo,
584 const char *Argument, unsigned ArgumentLen,
585 SmallVectorImpl<char> &OutStr) {
586 const char *ArgumentEnd = Argument+ArgumentLen;
587
588 // Skip over 'ValNo' |'s.
589 while (ValNo) {
590 const char *NextVal = ScanFormat(Argument, ArgumentEnd, '|');
591 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 592, __PRETTY_FUNCTION__))
592 " 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 592, __PRETTY_FUNCTION__))
;
593 Argument = NextVal+1; // Skip this string.
594 --ValNo;
595 }
596
597 // Get the end of the value. This is either the } or the |.
598 const char *EndPtr = ScanFormat(Argument, ArgumentEnd, '|');
599
600 // Recursively format the result of the select clause into the output string.
601 DInfo.FormatDiagnostic(Argument, EndPtr, OutStr);
602}
603
604/// HandleIntegerSModifier - Handle the integer 's' modifier. This adds the
605/// letter 's' to the string if the value is not 1. This is used in cases like
606/// this: "you idiot, you have %4 parameter%s4!".
607static void HandleIntegerSModifier(unsigned ValNo,
608 SmallVectorImpl<char> &OutStr) {
609 if (ValNo != 1)
610 OutStr.push_back('s');
611}
612
613/// HandleOrdinalModifier - Handle the integer 'ord' modifier. This
614/// prints the ordinal form of the given integer, with 1 corresponding
615/// to the first ordinal. Currently this is hard-coded to use the
616/// English form.
617static void HandleOrdinalModifier(unsigned ValNo,
618 SmallVectorImpl<char> &OutStr) {
619 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 619, __PRETTY_FUNCTION__))
;
620
621 llvm::raw_svector_ostream Out(OutStr);
622
623 // We could use text forms for the first N ordinals, but the numeric
624 // forms are actually nicer in diagnostics because they stand out.
625 Out << ValNo << llvm::getOrdinalSuffix(ValNo);
626}
627
628/// PluralNumber - Parse an unsigned integer and advance Start.
629static unsigned PluralNumber(const char *&Start, const char *End) {
630 // Programming 101: Parse a decimal number :-)
631 unsigned Val = 0;
18
'Val' initialized to 0
632 while (Start != End && *Start >= '0' && *Start <= '9') {
19
Assuming the condition is true
20
Assuming the condition is false
21
Loop condition is false. Execution continues on line 637
633 Val *= 10;
634 Val += *Start - '0';
635 ++Start;
636 }
637 return Val;
22
Returning zero (loaded from 'Val')
638}
639
640/// TestPluralRange - Test if Val is in the parsed range. Modifies Start.
641static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) {
642 if (*Start != '[') {
643 unsigned Ref = PluralNumber(Start, End);
644 return Ref == Val;
645 }
646
647 ++Start;
648 unsigned Low = PluralNumber(Start, End);
649 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 649, __PRETTY_FUNCTION__))
;
650 ++Start;
651 unsigned High = PluralNumber(Start, End);
652 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 652, __PRETTY_FUNCTION__))
;
653 ++Start;
654 return Low <= Val && Val <= High;
655}
656
657/// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier.
658static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) {
659 // Empty condition?
660 if (*Start == ':')
13
Taking false branch
661 return true;
662
663 while (true) {
14
Loop condition is true. Entering loop body
664 char C = *Start;
665 if (C == '%') {
15
Assuming the condition is true
16
Taking true branch
666 // Modulo expression
667 ++Start;
668 unsigned Arg = PluralNumber(Start, End);
17
Calling 'PluralNumber'
23
Returning from 'PluralNumber'
24
'Arg' initialized to 0
669 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 669, __PRETTY_FUNCTION__))
;
25
Assuming the condition is true
26
'?' condition is true
670 ++Start;
671 unsigned ValMod = ValNo % Arg;
27
Division by zero
672 if (TestPluralRange(ValMod, Start, End))
673 return true;
674 } else {
675 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 676, __PRETTY_FUNCTION__))
676 "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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 676, __PRETTY_FUNCTION__))
;
677 // Range expression
678 if (TestPluralRange(ValNo, Start, End))
679 return true;
680 }
681
682 // Scan for next or-expr part.
683 Start = std::find(Start, End, ',');
684 if (Start == End)
685 break;
686 ++Start;
687 }
688 return false;
689}
690
691/// HandlePluralModifier - Handle the integer 'plural' modifier. This is used
692/// for complex plural forms, or in languages where all plurals are complex.
693/// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are
694/// conditions that are tested in order, the form corresponding to the first
695/// that applies being emitted. The empty condition is always true, making the
696/// last form a default case.
697/// Conditions are simple boolean expressions, where n is the number argument.
698/// Here are the rules.
699/// condition := expression | empty
700/// empty := -> always true
701/// expression := numeric [',' expression] -> logical or
702/// numeric := range -> true if n in range
703/// | '%' number '=' range -> true if n % number in range
704/// range := number
705/// | '[' number ',' number ']' -> ranges are inclusive both ends
706///
707/// Here are some examples from the GNU gettext manual written in this form:
708/// English:
709/// {1:form0|:form1}
710/// Latvian:
711/// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0}
712/// Gaeilge:
713/// {1:form0|2:form1|:form2}
714/// Romanian:
715/// {1:form0|0,%100=[1,19]:form1|:form2}
716/// Lithuanian:
717/// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1}
718/// Russian (requires repeated form):
719/// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2}
720/// Slovak
721/// {1:form0|[2,4]:form1|:form2}
722/// Polish (requires repeated form):
723/// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2}
724static void HandlePluralModifier(const Diagnostic &DInfo, unsigned ValNo,
725 const char *Argument, unsigned ArgumentLen,
726 SmallVectorImpl<char> &OutStr) {
727 const char *ArgumentEnd = Argument + ArgumentLen;
728 while (true) {
1
Loop condition is true. Entering loop body
729 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 729, __PRETTY_FUNCTION__))
;
2
'?' condition is true
730 const char *ExprEnd = Argument;
731 while (*ExprEnd != ':') {
3
Assuming the condition is true
4
Loop condition is true. Entering loop body
6
Assuming the condition is true
7
Loop condition is true. Entering loop body
10
Assuming the condition is false
11
Loop condition is false. Execution continues on line 735
732 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 732, __PRETTY_FUNCTION__))
;
5
'?' condition is true
8
Assuming 'ExprEnd' is not equal to 'ArgumentEnd'
9
'?' condition is true
733 ++ExprEnd;
734 }
735 if (EvalPluralExpr(ValNo, Argument, ExprEnd)) {
12
Calling 'EvalPluralExpr'
736 Argument = ExprEnd + 1;
737 ExprEnd = ScanFormat(Argument, ArgumentEnd, '|');
738
739 // Recursively format the result of the plural clause into the
740 // output string.
741 DInfo.FormatDiagnostic(Argument, ExprEnd, OutStr);
742 return;
743 }
744 Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1;
745 }
746}
747
748/// Returns the friendly description for a token kind that will appear
749/// without quotes in diagnostic messages. These strings may be translatable in
750/// future.
751static const char *getTokenDescForDiagnostic(tok::TokenKind Kind) {
752 switch (Kind) {
753 case tok::identifier:
754 return "identifier";
755 default:
756 return nullptr;
757 }
758}
759
760/// FormatDiagnostic - Format this diagnostic into a string, substituting the
761/// formal arguments into the %0 slots. The result is appended onto the Str
762/// array.
763void Diagnostic::
764FormatDiagnostic(SmallVectorImpl<char> &OutStr) const {
765 if (!StoredDiagMessage.empty()) {
766 OutStr.append(StoredDiagMessage.begin(), StoredDiagMessage.end());
767 return;
768 }
769
770 StringRef Diag =
771 getDiags()->getDiagnosticIDs()->getDescription(getID());
772
773 FormatDiagnostic(Diag.begin(), Diag.end(), OutStr);
774}
775
776void Diagnostic::
777FormatDiagnostic(const char *DiagStr, const char *DiagEnd,
778 SmallVectorImpl<char> &OutStr) const {
779 // When the diagnostic string is only "%0", the entire string is being given
780 // by an outside source. Remove unprintable characters from this string
781 // and skip all the other string processing.
782 if (DiagEnd - DiagStr == 2 &&
783 StringRef(DiagStr, DiagEnd - DiagStr).equals("%0") &&
784 getArgKind(0) == DiagnosticsEngine::ak_std_string) {
785 const std::string &S = getArgStdStr(0);
786 for (char c : S) {
787 if (llvm::sys::locale::isPrint(c) || c == '\t') {
788 OutStr.push_back(c);
789 }
790 }
791 return;
792 }
793
794 /// FormattedArgs - Keep track of all of the arguments formatted by
795 /// ConvertArgToString and pass them into subsequent calls to
796 /// ConvertArgToString, allowing the implementation to avoid redundancies in
797 /// obvious cases.
798 SmallVector<DiagnosticsEngine::ArgumentValue, 8> FormattedArgs;
799
800 /// QualTypeVals - Pass a vector of arrays so that QualType names can be
801 /// compared to see if more information is needed to be printed.
802 SmallVector<intptr_t, 2> QualTypeVals;
803 SmallVector<char, 64> Tree;
804
805 for (unsigned i = 0, e = getNumArgs(); i < e; ++i)
806 if (getArgKind(i) == DiagnosticsEngine::ak_qualtype)
807 QualTypeVals.push_back(getRawArg(i));
808
809 while (DiagStr != DiagEnd) {
810 if (DiagStr[0] != '%') {
811 // Append non-%0 substrings to Str if we have one.
812 const char *StrEnd = std::find(DiagStr, DiagEnd, '%');
813 OutStr.append(DiagStr, StrEnd);
814 DiagStr = StrEnd;
815 continue;
816 } else if (isPunctuation(DiagStr[1])) {
817 OutStr.push_back(DiagStr[1]); // %% -> %.
818 DiagStr += 2;
819 continue;
820 }
821
822 // Skip the %.
823 ++DiagStr;
824
825 // This must be a placeholder for a diagnostic argument. The format for a
826 // placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0".
827 // The digit is a number from 0-9 indicating which argument this comes from.
828 // The modifier is a string of digits from the set [-a-z]+, arguments is a
829 // brace enclosed string.
830 const char *Modifier = nullptr, *Argument = nullptr;
831 unsigned ModifierLen = 0, ArgumentLen = 0;
832
833 // Check to see if we have a modifier. If so eat it.
834 if (!isDigit(DiagStr[0])) {
835 Modifier = DiagStr;
836 while (DiagStr[0] == '-' ||
837 (DiagStr[0] >= 'a' && DiagStr[0] <= 'z'))
838 ++DiagStr;
839 ModifierLen = DiagStr-Modifier;
840
841 // If we have an argument, get it next.
842 if (DiagStr[0] == '{') {
843 ++DiagStr; // Skip {.
844 Argument = DiagStr;
845
846 DiagStr = ScanFormat(DiagStr, DiagEnd, '}');
847 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 847, __PRETTY_FUNCTION__))
;
848 ArgumentLen = DiagStr-Argument;
849 ++DiagStr; // Skip }.
850 }
851 }
852
853 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 853, __PRETTY_FUNCTION__))
;
854 unsigned ArgNo = *DiagStr++ - '0';
855
856 // Only used for type diffing.
857 unsigned ArgNo2 = ArgNo;
858
859 DiagnosticsEngine::ArgumentKind Kind = getArgKind(ArgNo);
860 if (ModifierIs(Modifier, ModifierLen, "diff")) {
861 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 862, __PRETTY_FUNCTION__))
862 "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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 862, __PRETTY_FUNCTION__))
;
863 ++DiagStr; // Comma.
864 ArgNo2 = *DiagStr++ - '0';
865 DiagnosticsEngine::ArgumentKind Kind2 = getArgKind(ArgNo2);
866 if (Kind == DiagnosticsEngine::ak_qualtype &&
867 Kind2 == DiagnosticsEngine::ak_qualtype)
868 Kind = DiagnosticsEngine::ak_qualtype_pair;
869 else {
870 // %diff only supports QualTypes. For other kinds of arguments,
871 // use the default printing. For example, if the modifier is:
872 // "%diff{compare $ to $|other text}1,2"
873 // treat it as:
874 // "compare %1 to %2"
875 const char *ArgumentEnd = Argument + ArgumentLen;
876 const char *Pipe = ScanFormat(Argument, ArgumentEnd, '|');
877 assert(ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd &&((ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd &&
"Found too many '|'s in a %diff modifier!") ? static_cast<
void> (0) : __assert_fail ("ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd && \"Found too many '|'s in a %diff modifier!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 878, __PRETTY_FUNCTION__))
878 "Found too many '|'s in a %diff modifier!")((ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd &&
"Found too many '|'s in a %diff modifier!") ? static_cast<
void> (0) : __assert_fail ("ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd && \"Found too many '|'s in a %diff modifier!\""
, "/build/llvm-toolchain-snapshot-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 878, __PRETTY_FUNCTION__))
;
879 const char *FirstDollar = ScanFormat(Argument, Pipe, '$');
880 const char *SecondDollar = ScanFormat(FirstDollar + 1, Pipe, '$');
881 const char ArgStr1[] = { '%', static_cast<char>('0' + ArgNo) };
882 const char ArgStr2[] = { '%', static_cast<char>('0' + ArgNo2) };
883 FormatDiagnostic(Argument, FirstDollar, OutStr);
884 FormatDiagnostic(ArgStr1, ArgStr1 + 2, OutStr);
885 FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr);
886 FormatDiagnostic(ArgStr2, ArgStr2 + 2, OutStr);
887 FormatDiagnostic(SecondDollar + 1, Pipe, OutStr);
888 continue;
889 }
890 }
891
892 switch (Kind) {
893 // ---- STRINGS ----
894 case DiagnosticsEngine::ak_std_string: {
895 const std::string &S = getArgStdStr(ArgNo);
896 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 896, __PRETTY_FUNCTION__))
;
897 OutStr.append(S.begin(), S.end());
898 break;
899 }
900 case DiagnosticsEngine::ak_c_string: {
901 const char *S = getArgCStr(ArgNo);
902 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 902, __PRETTY_FUNCTION__))
;
903
904 // Don't crash if get passed a null pointer by accident.
905 if (!S)
906 S = "(null)";
907
908 OutStr.append(S, S + strlen(S));
909 break;
910 }
911 // ---- INTEGERS ----
912 case DiagnosticsEngine::ak_sint: {
913 int Val = getArgSInt(ArgNo);
914
915 if (ModifierIs(Modifier, ModifierLen, "select")) {
916 HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen,
917 OutStr);
918 } else if (ModifierIs(Modifier, ModifierLen, "s")) {
919 HandleIntegerSModifier(Val, OutStr);
920 } else if (ModifierIs(Modifier, ModifierLen, "plural")) {
921 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
922 OutStr);
923 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
924 HandleOrdinalModifier((unsigned)Val, OutStr);
925 } else {
926 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 926, __PRETTY_FUNCTION__))
;
927 llvm::raw_svector_ostream(OutStr) << Val;
928 }
929 break;
930 }
931 case DiagnosticsEngine::ak_uint: {
932 unsigned Val = getArgUInt(ArgNo);
933
934 if (ModifierIs(Modifier, ModifierLen, "select")) {
935 HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr);
936 } else if (ModifierIs(Modifier, ModifierLen, "s")) {
937 HandleIntegerSModifier(Val, OutStr);
938 } else if (ModifierIs(Modifier, ModifierLen, "plural")) {
939 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
940 OutStr);
941 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
942 HandleOrdinalModifier(Val, OutStr);
943 } else {
944 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 944, __PRETTY_FUNCTION__))
;
945 llvm::raw_svector_ostream(OutStr) << Val;
946 }
947 break;
948 }
949 // ---- TOKEN SPELLINGS ----
950 case DiagnosticsEngine::ak_tokenkind: {
951 tok::TokenKind Kind = static_cast<tok::TokenKind>(getRawArg(ArgNo));
952 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 952, __PRETTY_FUNCTION__))
;
953
954 llvm::raw_svector_ostream Out(OutStr);
955 if (const char *S = tok::getPunctuatorSpelling(Kind))
956 // Quoted token spelling for punctuators.
957 Out << '\'' << S << '\'';
958 else if (const char *S = tok::getKeywordSpelling(Kind))
959 // Unquoted token spelling for keywords.
960 Out << S;
961 else if (const char *S = getTokenDescForDiagnostic(Kind))
962 // Unquoted translatable token name.
963 Out << S;
964 else if (const char *S = tok::getTokenName(Kind))
965 // Debug name, shouldn't appear in user-facing diagnostics.
966 Out << '<' << S << '>';
967 else
968 Out << "(null)";
969 break;
970 }
971 // ---- NAMES and TYPES ----
972 case DiagnosticsEngine::ak_identifierinfo: {
973 const IdentifierInfo *II = getArgIdentifier(ArgNo);
974 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 974, __PRETTY_FUNCTION__))
;
975
976 // Don't crash if get passed a null pointer by accident.
977 if (!II) {
978 const char *S = "(null)";
979 OutStr.append(S, S + strlen(S));
980 continue;
981 }
982
983 llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\'';
984 break;
985 }
986 case DiagnosticsEngine::ak_qualtype:
987 case DiagnosticsEngine::ak_declarationname:
988 case DiagnosticsEngine::ak_nameddecl:
989 case DiagnosticsEngine::ak_nestednamespec:
990 case DiagnosticsEngine::ak_declcontext:
991 case DiagnosticsEngine::ak_attr:
992 getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo),
993 StringRef(Modifier, ModifierLen),
994 StringRef(Argument, ArgumentLen),
995 FormattedArgs,
996 OutStr, QualTypeVals);
997 break;
998 case DiagnosticsEngine::ak_qualtype_pair: {
999 // Create a struct with all the info needed for printing.
1000 TemplateDiffTypes TDT;
1001 TDT.FromType = getRawArg(ArgNo);
1002 TDT.ToType = getRawArg(ArgNo2);
1003 TDT.ElideType = getDiags()->ElideType;
1004 TDT.ShowColors = getDiags()->ShowColors;
1005 TDT.TemplateDiffUsed = false;
1006 intptr_t val = reinterpret_cast<intptr_t>(&TDT);
1007
1008 const char *ArgumentEnd = Argument + ArgumentLen;
1009 const char *Pipe = ScanFormat(Argument, ArgumentEnd, '|');
1010
1011 // Print the tree. If this diagnostic already has a tree, skip the
1012 // second tree.
1013 if (getDiags()->PrintTemplateTree && Tree.empty()) {
1014 TDT.PrintFromType = true;
1015 TDT.PrintTree = true;
1016 getDiags()->ConvertArgToString(Kind, val,
1017 StringRef(Modifier, ModifierLen),
1018 StringRef(Argument, ArgumentLen),
1019 FormattedArgs,
1020 Tree, QualTypeVals);
1021 // If there is no tree information, fall back to regular printing.
1022 if (!Tree.empty()) {
1023 FormatDiagnostic(Pipe + 1, ArgumentEnd, OutStr);
1024 break;
1025 }
1026 }
1027
1028 // Non-tree printing, also the fall-back when tree printing fails.
1029 // The fall-back is triggered when the types compared are not templates.
1030 const char *FirstDollar = ScanFormat(Argument, ArgumentEnd, '$');
1031 const char *SecondDollar = ScanFormat(FirstDollar + 1, ArgumentEnd, '$');
1032
1033 // Append before text
1034 FormatDiagnostic(Argument, FirstDollar, OutStr);
1035
1036 // Append first type
1037 TDT.PrintTree = false;
1038 TDT.PrintFromType = true;
1039 getDiags()->ConvertArgToString(Kind, val,
1040 StringRef(Modifier, ModifierLen),
1041 StringRef(Argument, ArgumentLen),
1042 FormattedArgs,
1043 OutStr, QualTypeVals);
1044 if (!TDT.TemplateDiffUsed)
1045 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype,
1046 TDT.FromType));
1047
1048 // Append middle text
1049 FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr);
1050
1051 // Append second type
1052 TDT.PrintFromType = false;
1053 getDiags()->ConvertArgToString(Kind, val,
1054 StringRef(Modifier, ModifierLen),
1055 StringRef(Argument, ArgumentLen),
1056 FormattedArgs,
1057 OutStr, QualTypeVals);
1058 if (!TDT.TemplateDiffUsed)
1059 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype,
1060 TDT.ToType));
1061
1062 // Append end text
1063 FormatDiagnostic(SecondDollar + 1, Pipe, OutStr);
1064 break;
1065 }
1066 }
1067
1068 // Remember this argument info for subsequent formatting operations. Turn
1069 // std::strings into a null terminated string to make it be the same case as
1070 // all the other ones.
1071 if (Kind == DiagnosticsEngine::ak_qualtype_pair)
1072 continue;
1073 else if (Kind != DiagnosticsEngine::ak_std_string)
1074 FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo)));
1075 else
1076 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_c_string,
1077 (intptr_t)getArgStdStr(ArgNo).c_str()));
1078 }
1079
1080 // Append the type tree to the end of the diagnostics.
1081 OutStr.append(Tree.begin(), Tree.end());
1082}
1083
1084StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID,
1085 StringRef Message)
1086 : ID(ID), Level(Level), Message(Message) {}
1087
1088StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level,
1089 const Diagnostic &Info)
1090 : ID(Info.getID()), Level(Level) {
1091 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 1092, __PRETTY_FUNCTION__))
1092 "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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 1092, __PRETTY_FUNCTION__))
;
1093 if (Info.getLocation().isValid())
1094 Loc = FullSourceLoc(Info.getLocation(), Info.getSourceManager());
1095 SmallString<64> Message;
1096 Info.FormatDiagnostic(Message);
1097 this->Message.assign(Message.begin(), Message.end());
1098 this->Ranges.assign(Info.getRanges().begin(), Info.getRanges().end());
1099 this->FixIts.assign(Info.getFixItHints().begin(), Info.getFixItHints().end());
1100}
1101
1102StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID,
1103 StringRef Message, FullSourceLoc Loc,
1104 ArrayRef<CharSourceRange> Ranges,
1105 ArrayRef<FixItHint> FixIts)
1106 : ID(ID), Level(Level), Loc(Loc), Message(Message),
1107 Ranges(Ranges.begin(), Ranges.end()), FixIts(FixIts.begin(), FixIts.end())
1108{
1109}
1110
1111/// IncludeInDiagnosticCounts - This method (whose default implementation
1112/// returns true) indicates whether the diagnostics handled by this
1113/// DiagnosticConsumer should be included in the number of diagnostics
1114/// reported by DiagnosticsEngine.
1115bool DiagnosticConsumer::IncludeInDiagnosticCounts() const { return true; }
1116
1117void IgnoringDiagConsumer::anchor() {}
1118
1119ForwardingDiagnosticConsumer::~ForwardingDiagnosticConsumer() = default;
1120
1121void ForwardingDiagnosticConsumer::HandleDiagnostic(
1122 DiagnosticsEngine::Level DiagLevel,
1123 const Diagnostic &Info) {
1124 Target.HandleDiagnostic(DiagLevel, Info);
1125}
1126
1127void ForwardingDiagnosticConsumer::clear() {
1128 DiagnosticConsumer::clear();
1129 Target.clear();
1130}
1131
1132bool ForwardingDiagnosticConsumer::IncludeInDiagnosticCounts() const {
1133 return Target.IncludeInDiagnosticCounts();
1134}
1135
1136PartialDiagnostic::StorageAllocator::StorageAllocator() {
1137 for (unsigned I = 0; I != NumCached; ++I)
1138 FreeList[I] = Cached + I;
1139 NumFreeListEntries = NumCached;
1140}
1141
1142PartialDiagnostic::StorageAllocator::~StorageAllocator() {
1143 // Don't assert if we are in a CrashRecovery context, as this invariant may
1144 // be invalidated during a crash.
1145 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 1147, __PRETTY_FUNCTION__))
1146 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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 1147, __PRETTY_FUNCTION__))
1147 "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-8~svn350071/tools/clang/lib/Basic/Diagnostic.cpp"
, 1147, __PRETTY_FUNCTION__))
;
1148}
1149
1150char DiagnosticError::ID;