Clang crash if try to compile class method with __restrict__ and inside enum

[llvmbot]

Bugzilla Link	27069
Version	trunk
OS	Linux
Attachments	source file, generated cpp, generated sh, crash report
Reporter	LLVM Bugzilla Contributor
CC	@hfinkel,@dobbelaj-snps

Extended Description

Clang crashing with error:
clang-3.9: /mnt/src/llvm/llvm/tools/clang/lib/Sema/SemaOverload.cpp:11829: clang::ExprResult clang::Sema::CreateOverloadedBinOp(clang::SourceLocation, clang::BinaryOperatorKind, const clang::UnresolvedSetImpl&, clang::Expr*, clang::Expr*): Assertion `Result.isInvalid() && "C++ binary operator overloading is missing candidates!"' failed.

Command to build file: clang-3.9 -o test.o -x c++ test.cpp

Attached source file and generated .sh and .cpp

[llvmbot]

This bug probably exists in clang 3.8 too, I triggered it for long time already while using trunk llvm/clang

[shafik]

it looks like this still reproduces: https://godbolt.org/z/hdjMKfchv

code:

enum T {
    Val = 0
};

class TestClass {
    void method() __restrict__ {
        mValue = Val;
    }
    T mValue;
};

Assertion:

clang++: /root/llvm-project/clang/lib/Sema/SemaOverload.cpp:14232:
clang::ExprResult clang::Sema::CreateOverloadedBinOp(clang::SourceLocation, clang::BinaryOperatorKind, const clang::UnresolvedSetImpl&, clang::Expr*, clang::Expr*, bool, bool, clang::FunctionDecl*):
Assertion `Result.isInvalid() && "C++ binary operator overloading is missing candidates!"' failed.

Backtrace:

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 -mllvm --x86-asm-syntax=intel -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics <source>
1.	<source>:7:21: current parser token ';'
2.	<source>:5:1: parsing struct/union/class body 'TestClass'
3.	<source>:6:32: parsing function body 'TestClass::method'
4.	<source>:6:32: in compound statement ('{}')
 #0 0x000055ed0c1736ff llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3baa6ff)
 #1 0x000055ed0c17146c llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3ba846c)
 #2 0x000055ed0c0bbca8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x00007f0564340420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
 #4 0x00007f0563e0d00b raise (/lib/x86_64-linux-gnu/libc.so.6+0x4300b)
 #5 0x00007f0563dec859 abort (/lib/x86_64-linux-gnu/libc.so.6+0x22859)
 #6 0x00007f0563dec729 (/lib/x86_64-linux-gnu/libc.so.6+0x22729)
 #7 0x00007f0563dfdfd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)
 #8 0x000055ed0f1a65c5 clang::Sema::CreateOverloadedBinOp(clang::SourceLocation, clang::BinaryOperatorKind, clang::UnresolvedSetImpl const&, clang::Expr*, clang::Expr*, bool, bool, clang::FunctionDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6bdd5c5)
 #9 0x000055ed0eda83b1 BuildOverloadedBinOp(clang::Sema&, clang::Scope*, clang::SourceLocation, clang::BinaryOperatorKind, clang::Expr*, clang::Expr*) SemaExpr.cpp:0:0
#10 0x000055ed0ee2f417 clang::Sema::BuildBinOp(clang::Scope*, clang::SourceLocation, clang::BinaryOperatorKind, clang::Expr*, clang::Expr*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6866417)
#11 0x000055ed0ee2fd21 clang::Sema::ActOnBinOp(clang::Scope*, clang::SourceLocation, clang::tok::TokenKind, clang::Expr*, clang::Expr*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6866d21)
#12 0x000055ed0e90fd36 clang::Parser::ParseRHSOfBinaryExpression(clang::ActionResult<clang::Expr*, true>, clang::prec::Level) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6346d36)
#13 0x000055ed0e91258d clang::Parser::ParseExpression(clang::Parser::TypeCastState) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x634958d)
#14 0x000055ed0e990860 clang::Parser::ParseExprStatement(clang::Parser::ParsedStmtContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x63c7860)
#15 0x000055ed0e986cbb clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x63bdcbb)
#16 0x000055ed0e987b25 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x63beb25)
#17 0x000055ed0e988b0a clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x63bfb0a)
#18 0x000055ed0e98a50a clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x63c150a)
#19 0x000055ed0e8b7a4a clang::Parser::ParseLexedMethodDef(clang::Parser::LexedMethod&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x62eea4a)
#20 0x000055ed0e8b772d clang::Parser::ParseLexedMethodDefs(clang::Parser::ParsingClass&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x62ee72d)
#21 0x000055ed0e90303c clang::Parser::ParseCXXMemberSpecification(clang::SourceLocation, clang::SourceLocation, clang::ParsedAttributes&, unsigned int, clang::Decl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x633a03c)
#22 0x000055ed0e904f80 clang::Parser::ParseClassSpecifier(clang::tok::TokenKind, clang::SourceLocation, clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, bool, clang::Parser::DeclSpecContext, clang::ParsedAttributes&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x633bf80)
#23 0x000055ed0e8ddca8 clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*, clang::ImplicitTypenameContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6314ca8)
#24 0x000055ed0e8a957b clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x62e057b)
#25 0x000055ed0e8a9eaf clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (.part.0) Parser.cpp:0:0
#26 0x000055ed0e8b0891 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x62e7891)
#27 0x000055ed0e8b11c3 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x62e81c3)
#28 0x000055ed0e8a4f9a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x62dbf9a)
#29 0x000055ed0d3abb58 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4de2b58)
#30 0x000055ed0cc07049 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x463e049)
#31 0x000055ed0cb8bef6 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x45c2ef6)
#32 0x000055ed0cce9a96 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4720a96)
#33 0x000055ed0964cdfc cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x1083dfc)
#34 0x000055ed09648b1a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#35 0x000055ed0c9f367d 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
#36 0x000055ed0c0bc1b0 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3af31b0)
#37 0x000055ed0c9f3eff 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
#38 0x000055ed0c9bb4fc clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x43f24fc)
#39 0x000055ed0c9bbf8d 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+++0x43f2f8d)
#40 0x000055ed0c9c406d clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x43fb06d)
#41 0x000055ed0964b07a clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x108207a)
#42 0x000055ed095522a5 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xf892a5)
#43 0x00007f0563dee083 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24083)
#44 0x000055ed096438fe _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x107a8fe)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134

[llvmbot]

@llvm/issue-subscribers-clang-frontend

[AaronBallman]

Closing as this issue appears to have been fixed in Clang 19: https://godbolt.org/z/sEv6137hP