| Issue |
149025
|
| Summary |
clang "Assertion `llvm::isPowerOf2_64(NewAlignment.getQuantity()) && "Alignment not a power of 2"' failed."
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
bi6c
|
Compiler Explorer: https://godbolt.org/z/jbhhjvYr8
- generated by fuzzer
console:
```console
clang: /root/llvm-project/llvm/tools/clang/lib/AST/RecordLayoutBuilder.cpp:2228: void {anonymous}::ItaniumRecordLayoutBuilder::UpdateAlignment(clang::CharUnits, clang::CharUnits, clang::CharUnits): Assertion `llvm::isPowerOf2_64(NewAlignment.getQuantity()) && "Alignment not a power of 2"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/clang -gdwarf-4 -g -o /app/output.s -fno-verbose-asm -c --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics <source>
1. <source>:12:36: current parser token ';'
#0 0x0000000003fb2168 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3fb2168)
#1 0x0000000003faf594 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3faf594)
#2 0x0000000003ef3d68 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x00007859ad642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007859ad6969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x00007859ad642476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007859ad6287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x00007859ad62871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x00007859ad639e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x0000000007bec91f (anonymous namespace)::ItaniumRecordLayoutBuilder::UpdateAlignment(clang::CharUnits, clang::CharUnits, clang::CharUnits) RecordLayoutBuilder.cpp:0:0
#10 0x0000000007bfaf6d (anonymous namespace)::ItaniumRecordLayoutBuilder::LayoutField(clang::FieldDecl const*, bool) RecordLayoutBuilder.cpp:0:0
#11 0x0000000007bfc002 (anonymous namespace)::ItaniumRecordLayoutBuilder::LayoutFields(clang::RecordDecl const*) RecordLayoutBuilder.cpp:0:0
#12 0x0000000007bf63cd clang::ASTContext::getASTRecordLayout(clang::RecordDecl const*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x7bf63cd)
#13 0x00000000075446b2 clang::ASTContext::getTypeInfoImpl(clang::Type const*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x75446b2)
#14 0x000000000752ca77 clang::ASTContext::getTypeInfo(clang::Type const*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x752ca77)
#15 0x0000000007543911 clang::ASTContext::getTypeInfoImpl(clang::Type const*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x7543911)
#16 0x000000000752ca77 clang::ASTContext::getTypeInfo(clang::Type const*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x752ca77)
#17 0x0000000007544b9b clang::ASTContext::getTypeInfoInChars(clang::Type const*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x7544b9b)
#18 0x000000000754536b clang::ASTContext::getTypeSizeInChars(clang::QualType) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x754536b)
#19 0x00000000078705f8 HandleSizeof((anonymous namespace)::EvalInfo&, clang::SourceLocation, clang::QualType, clang::CharUnits&, SizeOfType) ExprConstant.cpp:0:0
#20 0x00000000078a721f (anonymous namespace)::IntExprEvaluator::VisitUnaryExprOrTypeTraitExpr(clang::UnaryExprOrTypeTraitExpr const*) ExprConstant.cpp:0:0
#21 0x00000000078aff98 clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::IntExprEvaluator, bool>::Visit(clang::Stmt const*) ExprConstant.cpp:0:0
#22 0x00000000078a08f6 Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) ExprConstant.cpp:0:0
#23 0x000000000790665e (anonymous namespace)::IntExprEvaluator::VisitBinaryOperator(clang::BinaryOperator const*) ExprConstant.cpp:0:0
#24 0x00000000078b00fd clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::IntExprEvaluator, bool>::Visit(clang::Stmt const*) ExprConstant.cpp:0:0
#25 0x00000000078a08f6 Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) ExprConstant.cpp:0:0
#26 0x00000000078a7758 EvaluateAsBooleanCondition(clang::Expr const*, bool&, (anonymous namespace)::EvalInfo&) ExprConstant.cpp:0:0
#27 0x00000000078af701 clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::IntExprEvaluator, bool>::Visit(clang::Stmt const*) ExprConstant.cpp:0:0
#28 0x00000000078a08f6 Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) ExprConstant.cpp:0:0
#29 0x00000000078a103b EvaluateAsRValue((anonymous namespace)::EvalInfo&, clang::Expr const*, clang::APValue&) ExprConstant.cpp:0:0
#30 0x00000000078a2f15 clang::Expr::EvaluateKnownConstIntCheckOverflow(clang::ASTContext const&, llvm::SmallVectorImpl<std::pair<clang::SourceLocation, clang::PartialDiagnostic>>*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x78a2f15)
#31 0x0000000006ba39f7 clang::Sema::VerifyIntegerConstantExpression(clang::Expr*, llvm::APSInt*, clang::Sema::VerifyICEDiagnoser&, clang::AllowFoldKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6ba39f7)
#32 0x000000000726ba25 clang::Sema::BuildArrayType(clang::QualType, clang::ArraySizeModifier, clang::Expr*, unsigned int, clang::SourceRange, clang::DeclarationName) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x726ba25)
#33 0x00000000072883f5 GetFullTypeForDeclarator((anonymous namespace)::TypeProcessingState&, clang::QualType, clang::TypeSourceInfo*) SemaType.cpp:0:0
#34 0x000000000728ddcf clang::Sema::GetTypeForDeclarator(clang::Declarator&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x728ddcf)
#35 0x0000000006a444f3 clang::Sema::HandleDeclarator(clang::Scope*, clang::Declarator&, llvm::MutableArrayRef<clang::TemplateParameterList*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6a444f3)
#36 0x0000000006a45790 clang::Sema::ActOnDeclarator(clang::Scope*, clang::Declarator&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6a45790)
#37 0x00000000066949a3 clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x66949a3)
#38 0x00000000066a3c39 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x66a3c39)
#39 0x000000000666167e clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x666167e)
#40 0x0000000006661e19 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6661e19)
#41 0x0000000006669aaa clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6669aaa)
#42 0x000000000666aa45 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x666aa45)
#43 0x000000000665c81a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x665c81a)
#44 0x0000000004967388 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4967388)
#45 0x0000000004c5ad75 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4c5ad75)
#46 0x0000000004bd782e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4bd782e)
#47 0x0000000004d4e821 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4d4e821)
#48 0x0000000000d933bf cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xd933bf)
#49 0x0000000000d89f9a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#50 0x00000000049ce879 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#51 0x0000000003ef4204 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3ef4204)
#52 0x00000000049cee8f clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0
#53 0x0000000004990d9d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4990d9d)
#54 0x0000000004991e2e clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4991e2e)
#55 0x000000000499aa75 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x499aa75)
#56 0x0000000000d8f86f clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xd8f86f)
#57 0x0000000000c44414 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xc44414)
#58 0x00007859ad629d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#59 0x00007859ad629e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#60 0x0000000000d89a45 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xd89a45)
clang: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
```
code:
```c
#define CHECK(expr) extern char c[(expr) ? 1 : -1]
#define offsetof(x, y) __builtin_offsetof(x, y)
struct test_s4 {
int a;
short b;
unsigned _BitInt(130) : 15;
char d;
} __attribute__((ms_struct));
CHECK(sizeof(struct test_s4) == 16);
```
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