Bug Summary

File:build/source/mlir/lib/TableGen/SideEffects.cpp
Warning:line 49, column 11
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name SideEffects.cpp -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 -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/source/build-llvm/tools/clang/stage2-bins -resource-dir /usr/lib/llvm-17/lib/clang/17 -D MLIR_CUDA_CONVERSIONS_ENABLED=1 -D MLIR_ROCM_CONVERSIONS_ENABLED=1 -D _DEBUG -D _GLIBCXX_ASSERTIONS -D _GNU_SOURCE -D _LIBCPP_ENABLE_ASSERTIONS -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I tools/mlir/lib/TableGen -I /build/source/mlir/lib/TableGen -I include -I /build/source/llvm/include -I /build/source/mlir/include -I tools/mlir/include -D _FORTIFY_SOURCE=2 -D NDEBUG -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-17/lib/clang/17/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/build/source/build-llvm/tools/clang/stage2-bins=build-llvm/tools/clang/stage2-bins -fmacro-prefix-map=/build/source/= -fcoverage-prefix-map=/build/source/build-llvm/tools/clang/stage2-bins=build-llvm/tools/clang/stage2-bins -fcoverage-prefix-map=/build/source/= -source-date-epoch 1683717183 -O2 -Wno-unused-command-line-argument -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -Wno-misleading-indentation -std=c++17 -fdeprecated-macro -fdebug-compilation-dir=/build/source/build-llvm/tools/clang/stage2-bins -fdebug-prefix-map=/build/source/build-llvm/tools/clang/stage2-bins=build-llvm/tools/clang/stage2-bins -fdebug-prefix-map=/build/source/= -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2023-05-10-133810-16478-1 -x c++ /build/source/mlir/lib/TableGen/SideEffects.cpp
1//===- SideEffects.cpp - SideEffect classes -------------------------------===//
2//
3// Part of the MLIR 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#include "mlir/TableGen/SideEffects.h"
10#include "llvm/ADT/Twine.h"
11#include "llvm/TableGen/Record.h"
12
13using namespace mlir;
14using namespace mlir::tblgen;
15
16//===----------------------------------------------------------------------===//
17// SideEffect
18//===----------------------------------------------------------------------===//
19
20StringRef SideEffect::getName() const {
21 return def->getValueAsString("effect");
22}
23
24StringRef SideEffect::getBaseEffectName() const {
25 return def->getValueAsString("baseEffectName");
26}
27
28std::string SideEffect::getInterfaceTrait() const {
29 StringRef trait = def->getValueAsString("interfaceTrait");
30 StringRef cppNamespace = def->getValueAsString("cppNamespace");
31 return cppNamespace.empty() ? trait.str()
32 : (cppNamespace + "::" + trait).str();
33}
34
35StringRef SideEffect::getResource() const {
36 return def->getValueAsString("resource");
37}
38
39bool SideEffect::classof(const Operator::VariableDecorator *var) {
40 return var->getDef().isSubClassOf("SideEffect");
41}
42
43//===----------------------------------------------------------------------===//
44// SideEffectsTrait
45//===----------------------------------------------------------------------===//
46
47Operator::var_decorator_range SideEffectTrait::getEffects() const {
48 auto *listInit = dyn_cast<llvm::ListInit>(def->getValueInit("effects"));
1
Assuming the object is not a 'CastReturnType'
→
2
←
'listInit' initialized to a null pointer value
→
49 return {listInit->begin(), listInit->end()};
3
←
Called C++ object pointer is null
50}
51
52StringRef SideEffectTrait::getBaseEffectName() const {
53 return def->getValueAsString("baseEffectName");
54}
55
56bool SideEffectTrait::classof(const Trait *t) {
57 return t->getDef().isSubClassOf("SideEffectsTraitBase");
58}