Clang-20 crash at clang::CallExpr::getUnusedResultAttr(clang::ASTContext const&) const #117975
Description
Description
I encountered a crash in Clang-20 when compiling the following code
clangcrash.zip
Command
The compilation command used was:
clang++ -fno-rtlib-add-rpath -fno-ident -flto -O3 -Wall -Wextra -fno-strict-aliasing -fwrapv -g -fsanitize=address clangcrash.cError Message
In file included from core.c:11:
In file included from ./helpers.h:13:
./aArray.h:3255:34: error: use of undeclared identifier 'std'
3255 | char errLoc[], int8_t vec[], std::function<void(int8_t*)> f), {
| ^
./aArray.h:3262:35: error: use of undeclared identifier 'std'
3262 | char errLoc[], int16_t vec[], std::function<void(int16_t*)> f), {
| ^
./aArray.h:3269:35: error: use of undeclared identifier 'std'
3269 | char errLoc[], int32_t vec[], std::function<void(int32_t*)> f), {
| ^
./aArray.h:3276:35: error: use of undeclared identifier 'std'
3276 | char errLoc[], int64_t vec[], std::function<void(int64_t*)> f), {
| ^
./aArray.h:3291:46: error: use of undeclared identifier 'std'
3291 | char errLoc[], int8_t vec[], size_t pos, std::function<int(size_t)> f), {
| ^
./aArray.h:3305:47: error: use of undeclared identifier 'std'
3305 | char errLoc[], int16_t vec[], size_t pos, std::function<int(size_t)> f), {
| ^
./aArray.h:3319:47: error: use of undeclared identifier 'std'
3319 | char errLoc[], int32_t vec[], size_t pos, std::function<int(size_t)> f), {
| ^
./aArray.h:3333:47: error: use of undeclared identifier 'std'
3333 | char errLoc[], int64_t vec[], size_t pos, std::function<int(size_t)> f), {
| ^
./aArray.h:3356:34: error: use of undeclared identifier 'std'
3356 | char errLoc[], int8_t vec[], std::function<int(int8_t*)> f), {
| ^
./aArray.h:3366:35: error: use of undeclared identifier 'std'
3366 | char errLoc[], int16_t vec[], std::function<int(int16_t*)> f), {
| ^
./aArray.h:3376:35: error: use of undeclared identifier 'std'
3376 | char errLoc[], int32_t vec[], std::function<int(int32_t*)> f), {
| ^
./aArray.h:3386:35: error: use of undeclared identifier 'std'
3386 | char errLoc[], int64_t vec[], std::function<int(int64_t*)> f), {
| ^
./aArray.h:3733:5: error: use of undeclared identifier 'std'
3733 | std::function<int8_t(int8_t,int8_t)>f), {
| ^
./aArray.h:3741:5: error: use of undeclared identifier 'std'
3741 | std::function<int16_t(int16_t,int8_t)>f), {
| ^
./aArray.h:3749:5: error: use of undeclared identifier 'std'
3749 | std::function<int32_t(int32_t,int8_t)>f), {
| ^
./aArray.h:3757:5: error: use of undeclared identifier 'std'
3757 | std::function<int64_t(int64_t,int8_t)>f), {
| ^
./aArray.h:3765:5: error: use of undeclared identifier 'std'
3765 | std::function<int8_t(int8_t,int16_t)>f), {
| ^
./aArray.h:3773:5: error: use of undeclared identifier 'std'
3773 | std::function<int16_t(int16_t,int16_t)>f), {
| ^
./aArray.h:3781:5: error: use of undeclared identifier 'std'
3781 | std::function<int32_t(int32_t,int16_t)>f), {
| ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
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 -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics -fno-rtlib-add-rpath -fno-ident -flto -O3 -Wall -Wextra -fno-strict-aliasing -fwrapv -g -fsanitize=address <source>
1. core.c:154:60: current parser token '}'
2. core.c:139:50: parsing function body 'id_print_name'
3. core.c:139:50: in compound statement ('{}')
4. core.c:144:17: in compound statement ('{}')
5. core.c:154:10: in compound statement ('{}')
#0 0x0000000003c15168 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3c15168)
#1 0x0000000003c12e6c llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3c12e6c)
#2 0x0000000003b60558 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x00007cf1b7442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x000000000764f77b clang::CallExpr::getUnusedResultAttr(clang::ASTContext const&) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x764f77b)
#5 0x0000000006e567be clang::Sema::DiagnoseUnusedExprResult(clang::Stmt const*, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6e567be)
#6 0x0000000006b3eecc clang::Sema::ActOnFinishFullExpr(clang::Expr*, clang::SourceLocation, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b3eecc)
#7 0x0000000006e479ae clang::Sema::ActOnExprStmt(clang::ActionResult<clang::Expr*, true>, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6e479ae)
#8 0x0000000006649284 clang::Parser::ParseExprStatement(clang::Parser::ParsedStmtContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6649284)
#9 0x000000000663f39e 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+++0x663f39e)
#10 0x00000000066402f0 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66402f0)
#11 0x00000000066411d5 clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66411d5)
#12 0x00000000066418c4 clang::Parser::ParseCompoundStatement(bool, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66418c4)
#13 0x000000000663e367 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+++0x663e367)
#14 0x00000000066402f0 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66402f0)
#15 0x0000000006642b68 clang::Parser::ParseStatement(clang::SourceLocation*, clang::Parser::ParsedStmtContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6642b68)
#16 0x0000000006645e02 clang::Parser::ParseIfStatement(clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6645e02)
#17 0x000000000663ebd8 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+++0x663ebd8)
#18 0x00000000066402f0 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66402f0)
#19 0x00000000066411d5 clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66411d5)
#20 0x00000000066418c4 clang::Parser::ParseCompoundStatement(bool, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66418c4)
#21 0x000000000663e367 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+++0x663e367)
#22 0x00000000066402f0 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66402f0)
#23 0x0000000006642b68 clang::Parser::ParseStatement(clang::SourceLocation*, clang::Parser::ParsedStmtContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6642b68)
#24 0x0000000006645cff clang::Parser::ParseIfStatement(clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6645cff)
#25 0x000000000663ebd8 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+++0x663ebd8)
#26 0x00000000066402f0 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66402f0)
#27 0x00000000066411d5 clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66411d5)
#28 0x00000000066429da clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66429da)
#29 0x0000000006555fe3 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6555fe3)
#30 0x000000000658a79d 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+++0x658a79d)
#31 0x0000000006549d2e clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6549d2e)
#32 0x000000000654a4ee clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x654a4ee)
#33 0x0000000006551c83 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6551c83)
#34 0x0000000006552b6d clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6552b6d)
#35 0x000000000654508a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x654508a)
#36 0x000000000459b908 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x459b908)
#37 0x0000000004855fe9 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4855fe9)
#38 0x00000000047d5efe clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x47d5efe)
#39 0x000000000494104e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x494104e)
#40 0x0000000000cae571 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xcae571)
#41 0x0000000000ca60fa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#42 0x00000000045deb19 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
#43 0x0000000003b60a04 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3b60a04)
#44 0x00000000045df10f 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
#45 0x00000000045a53ed clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x45a53ed)
#46 0x00000000045a64dd 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+++0x45a64dd)
#47 0x00000000045ad895 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x45ad895)
#48 0x0000000000cab3a3 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xcab3a3)
#49 0x0000000000b7ee94 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xb7ee94)
#50 0x00007cf1b7429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#51 0x00007cf1b7429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#52 0x0000000000ca5bae _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xca5bae)
clang++: error: clang frontend command failed with exit code 139 (use -v to see invocation)
Compiler returned: 139The issue can also be reproduced on Compiler Explorer:https://godbolt.org/z/v4W5WcjKM
Please let me know if you need any more details.