| Issue |
177844
|
| Summary |
[clang][bytecode] crash on wcslen
|
| Labels |
crash-on-invalid,
generated by fuzzer,
clang:bytecode
|
| Assignees |
|
| Reporter |
k-arrows
|
Reproducer:
https://godbolt.org/z/fxand5jo4
```c
#include <wchar.h>
static_assert(wcslen("x") == 'x');
```
Backtrace:
```console
clang++: /root/llvm-project/llvm/tools/clang/lib/AST/ByteCode/InterpBuiltin.cpp:371: bool clang::interp::interp__builtin_strlen(clang::interp::InterpState&, clang::interp::CodePtr, const clang::interp::InterpFrame*, const clang::CallExpr*, unsigned int): Assertion `ElemSize == AC.getTypeSizeInChars(AC.getWCharType()).getQuantity()' 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++ -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 -x c -std=c23 -fexperimental-new-constant-interpreter <source>
1. <eof> parser at end of file
#0 0x000000000430ae68 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x430ae68)
#1 0x00000000043082c4 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x43082c4)
#2 0x000000000424a088 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x0000714128042520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007141280969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x0000714128042476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007141280287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x000071412802871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x0000714128039e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x0000000007f6dfcd clang::interp::interp__builtin_strlen(clang::interp::InterpState&, clang::interp::CodePtr, clang::interp::InterpFrame const*, clang::CallExpr const*, unsigned int) (.isra.0) InterpBuiltin.cpp:0:0
#10 0x0000000007f85f87 clang::interp::InterpretBuiltin(clang::interp::InterpState&, clang::interp::CodePtr, clang::CallExpr const*, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7f85f87)
#11 0x00000000082bf7ec clang::interp::Compiler<clang::interp::EvalEmitter>::VisitBuiltinCallExpr(clang::CallExpr const*, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x82bf7ec)
#12 0x00000000082bfcfe clang::interp::Compiler<clang::interp::EvalEmitter>::VisitCallExpr(clang::CallExpr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x82bfcfe)
#13 0x00000000082c756a clang::interp::Compiler<clang::interp::EvalEmitter>::visit(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x82c756a)
#14 0x00000000082bae76 clang::interp::Compiler<clang::interp::EvalEmitter>::visitExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x82bae76)
#15 0x0000000007e3238d clang::interp::EvalEmitter::interpretExpr(clang::Expr const*, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e3238d)
#16 0x0000000007e225f3 clang::interp::Context::evaluateAsRValue(clang::interp::State&, clang::Expr const*, clang::APValue&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e225f3)
#17 0x0000000007d8fa13 EvaluateAsRValue((anonymous namespace)::EvalInfo&, clang::Expr const*, clang::APValue&) ExprConstant.cpp:0:0
#18 0x0000000007d98790 CheckEvalInICE(clang::Expr const*, clang::ASTContext const&) ExprConstant.cpp:0:0
#19 0x0000000007d9905b CheckICE(clang::Expr const*, clang::ASTContext const&) ExprConstant.cpp:0:0
#20 0x0000000007d999c4 clang::Expr::isIntegerConstantExpr(clang::ASTContext const&) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7d999c4)
#21 0x0000000007d9a093 clang::Expr::getIntegerConstantExpr(clang::ASTContext const&) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7d9a093)
#22 0x0000000006d02b97 AnalyzeImplicitConversions(clang::Sema&, clang::Expr*, clang::SourceLocation, bool) (.constprop.0) SemaChecking.cpp:0:0
#23 0x0000000006d037d5 clang::Sema::CheckCompletedExpr(clang::Expr*, clang::SourceLocation, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d037d5)
#24 0x00000000070aa3e7 clang::Sema::ActOnFinishFullExpr(clang::Expr*, clang::SourceLocation, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x70aa3e7)
#25 0x0000000006ef9611 clang::Sema::BuildStaticAssertDeclaration(clang::SourceLocation, clang::Expr*, clang::Expr*, clang::SourceLocation, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ef9611)
#26 0x0000000006ade436 clang::Parser::ParseStaticAssertDeclaration(clang::SourceLocation&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ade436)
#27 0x0000000006acbf96 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6acbf96)
#28 0x0000000006a88b16 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a88b16)
#29 0x0000000006a89a05 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a89a05)
#30 0x0000000006a6a71a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a6a71a)
#31 0x0000000004c74558 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c74558)
#32 0x0000000004f6f6b5 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f6f6b5)
#33 0x0000000004eef0de clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4eef0de)
#34 0x000000000506a87d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x506a87d)
#35 0x0000000000dde12e cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdde12e)
#36 0x0000000000dd4afa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
#37 0x0000000000dd4c7d int llvm::function_ref<int (llvm::SmallVectorImpl<char const*>&)>::callback_fn<clang_main(int, char**, llvm::ToolContext const&)::'lambda'(llvm::SmallVectorImpl<char const*>&)>(long, llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0
#38 0x0000000004ce7f99 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
#39 0x000000000424a524 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x424a524)
#40 0x0000000004ce85af 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
#41 0x0000000004ca8f82 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4ca8f82)
#42 0x0000000004ca9f2e 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+++0x4ca9f2e)
#43 0x0000000004cb1375 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4cb1375)
#44 0x0000000000dda4a1 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdda4a1)
#45 0x0000000000c974f4 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc974f4)
#46 0x0000714128029d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#47 0x0000714128029e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#48 0x0000000000dd4595 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdd4595)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
```
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