| Issue |
133604
|
| Summary |
[Clang] [Sema] Assertion when trying to `goto` into an attribute
|
| Labels |
clang:frontend,
crash-on-invalid
|
| Assignees |
|
| Reporter |
Sirraide
|
This is horrendous and I hope no-one is actually writing code like this (https://godbolt.org/z/To1Kh13WW):
```c++
void f() {
goto x;
[[assume(({ x: 5; }))]];
}
```
Assertion:
```console
clang/lib/Sema/JumpDiagnostics.cpp:939:
void {anonymous}::JumpScopeChecker::CheckJump(
clang::Stmt*, clang::Stmt*, clang::SourceLocation, unsigned int,
unsigned int, unsigned int):
Assertion `Permissive || !(!LabelAndGotoScopes.count(To))' failed.
```
Stack trace:
```console
0. Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/clang++ -gdwarf-4 -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics <source>
1. <eof> parser at end of file
2. <source>:1:10: parsing function body 'f'
#0 0x0000000003e9f408 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3e9f408)
#1 0x0000000003e9d094 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3e9d094)
#2 0x0000000003de21d8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x0000710c0fa42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x0000710c0fa969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x0000710c0fa42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x0000710c0fa287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x0000710c0fa2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x0000710c0fa39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x00000000071bde23 (anonymous namespace)::JumpScopeChecker::CheckJump(clang::Stmt*, clang::Stmt*, clang::SourceLocation, unsigned int, unsigned int, unsigned int) JumpDiagnostics.cpp:0:0
#10 0x00000000071c4749 (anonymous namespace)::JumpScopeChecker::VerifyJumps() JumpDiagnostics.cpp:0:0
#11 0x00000000071c9cae clang::Sema::DiagnoseInvalidJumps(clang::Stmt*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x71c9cae)
#12 0x000000000687acc2 clang::Sema::ActOnFinishFunctionBody(clang::Decl*, clang::Stmt*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x687acc2)
#13 0x00000000065d36ff clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x65d36ff)
#14 0x00000000064dd163 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x64dd163)
#15 0x00000000065126fd 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+++0x65126fd)
#16 0x00000000064d0d7e clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x64d0d7e)
#17 0x00000000064d1539 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x64d1539)
#18 0x00000000064d8e03 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x64d8e03)
#19 0x00000000064d9d1d clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x64d9d1d)
#20 0x00000000064da1d0 clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x64da1d0)
#21 0x00000000064cc233 clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x64cc233)
#22 0x0000000004836808 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4836808)
#23 0x0000000004b25075 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4b25075)
#24 0x0000000004aa6cbe clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4aa6cbe)
#25 0x0000000004c1563e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c1563e)
#26 0x0000000000d5d5ef cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xd5d5ef)
#27 0x0000000000d54daa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#28 0x000000000489bf89 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
#29 0x0000000003de2674 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3de2674)
#30 0x000000000489c59f 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
#31 0x000000000485ef5d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x485ef5d)
#32 0x000000000485ffee 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+++0x485ffee)
#33 0x00000000048676f5 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x48676f5)
#34 0x0000000000d5a3e8 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xd5a3e8)
#35 0x0000000000c20824 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc20824)
#36 0x0000710c0fa29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#37 0x0000710c0fa29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#38 0x0000000000d54855 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xd54855)
```
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