| Issue |
202317
|
| Summary |
[clang] Assertion `Source->isUnicodeCharacterType() && Target->isUnicodeCharacterType() && Source != Target' failed.
|
| Labels |
clang:frontend,
crash,
generated by fuzzer
|
| Assignees |
|
| Reporter |
k-arrows
|
Reproducer:
https://godbolt.org/z/G964nxqMb
```cpp
typedef __attribute__((__ext_vector_type__(4))) char32_t vf4;
typedef __attribute__((__ext_vector_type__(4))) int vi4;
vi4 foo(vf4 &V) { return V.xyzw < V.x; }
```
Backtrace:
```console
clang++: /root/llvm-project/llvm/tools/clang/lib/Sema/SemaChecking.cpp:13112: void DiagnoseMixedUnicodeImplicitConversion(clang::Sema&, const clang::Type*, const clang::Type*, clang::Expr*, clang::QualType, clang::SourceLocation): Assertion `Source->isUnicodeCharacterType() && Target->isUnicodeCharacterType() && Source != Target' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and dumped files.
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 <source>
1. <source>:4:38: current parser token ';'
2. <source>:4:17: parsing function body 'foo'
3. <source>:4:17: in compound statement ('{}')
#0 0x000000000436b638 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x436b638)
#1 0x0000000004368474 llvm::sys::RunSignalHandlers() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4368474)
#2 0x0000000004368a94 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4368a94)
#3 0x00000000042a4da8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#4 0x00007368c9245330 (/lib/x86_64-linux-gnu/libc.so.6+0x45330)
#5 0x00007368c929eb2c pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x9eb2c)
#6 0x00007368c924527e raise (/lib/x86_64-linux-gnu/libc.so.6+0x4527e)
#7 0x00007368c92288ff abort (/lib/x86_64-linux-gnu/libc.so.6+0x288ff)
#8 0x00007368c922881b (/lib/x86_64-linux-gnu/libc.so.6+0x2881b)
#9 0x00007368c923b517 (/lib/x86_64-linux-gnu/libc.so.6+0x3b517)
#10 0x0000000006e88708 clang::Sema::CheckImplicitConversion(clang::Expr*, clang::QualType, clang::SourceLocation, bool*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6e88708)
#11 0x0000000006e8a867 AnalyzeImplicitConversions(clang::Sema&, clang::Expr*, clang::SourceLocation, bool) (.constprop.0) SemaChecking.cpp:0:0
#12 0x0000000006e8bd78 AnalyzeImplicitConversions(clang::Sema&, clang::Expr*, clang::SourceLocation, bool) (.constprop.0) SemaChecking.cpp:0:0
#13 0x0000000006e8cbc5 clang::Sema::CheckCompletedExpr(clang::Expr*, clang::SourceLocation, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6e8cbc5)
#14 0x0000000007263a57 clang::Sema::ActOnFinishFullExpr(clang::Expr*, clang::SourceLocation, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7263a57)
#15 0x00000000075a1246 clang::Sema::BuildReturnStmt(clang::SourceLocation, clang::Expr*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x75a1246)
#16 0x00000000075a1d77 clang::Sema::ActOnReturnStmt(clang::SourceLocation, clang::Expr*, clang::Scope*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x75a1d77)
#17 0x0000000006d1ff8a clang::Parser::ParseReturnStatement() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d1ff8a)
#18 0x0000000006d243d3 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::LabelDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d243d3)
#19 0x0000000006d25319 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::LabelDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d25319)
#20 0x0000000006d2db3e clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d2db3e)
#21 0x0000000006d2e35a clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d2e35a)
#22 0x0000000006c31f63 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::LateParsedAttrList*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c31f63)
#23 0x0000000006c69243 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+++0x6c69243)
#24 0x0000000006c254cb clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c254cb)
#25 0x0000000006c25ccf clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c25ccf)
#26 0x0000000006c2d791 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c2d791)
#27 0x0000000006c2e6a5 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c2e6a5)
#28 0x0000000006c0f57a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c0f57a)
#29 0x0000000004e581a8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4e581a8)
#30 0x000000000518ce78 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x518ce78)
#31 0x000000000510a6ad clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x510a6ad)
#32 0x000000000528baed clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x528baed)
#33 0x0000000000e200bb cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xe200bb)
#34 0x0000000000e1690a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
#35 0x0000000000e16a8d 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
#36 0x0000000004eca569 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
#37 0x00000000042a51e4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x42a51e4)
#38 0x0000000004ecabb6 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
#39 0x0000000004e876c2 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4e876c2)
#40 0x0000000004e8866e 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+++0x4e8866e)
#41 0x0000000004e90875 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4e90875)
#42 0x0000000000e1c3d4 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xe1c3d4)
#43 0x0000000000cc037a main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xcc037a)
#44 0x00007368c922a1ca (/lib/x86_64-linux-gnu/libc.so.6+0x2a1ca)
#45 0x00007368c922a28b __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28b)
#46 0x0000000000e163a5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xe163a5)
clang++: error: clang frontend command failed due to signal (use -v to see invocation)
Compiler returned: 134
```
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