fhahn
commented
3 years ago Crashes on trunk as well: https://godbolt.org/z/cx95K6
- Program arguments: /opt/compiler-explorer/clang-trunk/bin/clang++ -g -o ./output.s -mllvm --x86-asm-syntax=intel -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics
:7:1: current parser token '}' :1:12: parsing function body 'main' :1:12: in compound statement ('{}') :2:5: parsing struct/union/class body '' 0 0x000056095414fbec llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x303ebec)
1 0x000056095414d994 llvm::sys::RunSignalHandlers() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x303c994)
2 0x000056095414dc15 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x303cc15)
3 0x00005609540b45b8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
4 0x00007f77eb09a3c0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0)
5 0x0000560955fbd1da clang::Sema::ActOnTagFinishDefinition(clang::Scope, clang::Decl, clang::SourceRange) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4eac1da)
6 0x0000560955dd7c0e clang::Parser::ParseCXXMemberSpecification(clang::SourceLocation, clang::SourceLocation, clang::Parser::ParsedAttributesWithRange&, unsigned int, clang::Decl*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4cc6c0e)
7 0x0000560955dd9b8b clang::Parser::ParseClassSpecifier(clang::tok::TokenKind, clang::SourceLocation, clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, bool, clang::Parser::DeclSpecContext, clang::Parser::ParsedAttributesWithRange&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4cc8b8b)
8 0x0000560955dbaaee clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4ca9aee)
9 0x0000560955dc050d clang::Parser::ParseSimpleDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&, bool, clang::Parser::ForRangeInit, clang::SourceLocation) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4caf50d)
10 0x0000560955dc0882 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&, clang::SourceLocation*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4caf882)
11 0x0000560955e3ab59 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation, clang::Parser::ParsedAttributesWithRange&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4d29b59)
12 0x0000560955e3adcd clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4d29dcd)
13 0x0000560955e3b8e1 clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4d2a8e1)
14 0x0000560955e3f103 clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4d2e103)
15 0x0000560955d97267 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4c86267)
16 0x0000560955dbf885 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::SourceLocation, clang::Parser::ForRangeInit) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4cae885)
17 0x0000560955d929c1 clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4c819c1)
18 0x0000560955d930f1 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (.part.241) Parser.cpp:0:0
19 0x0000560955d99079 clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4c88079)
20 0x0000560955d9a5f9 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr
21 0x0000560955d9abe5 clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr
22 0x0000560955d8d823 clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x4c7c823)
23 0x0000560954fc5932 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3eb4932)
24 0x00005609549c49b1 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x38b39b1)
25 0x000056095495b5f3 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x384a5f3)
26 0x0000560954a8ba13 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x397aa13)
27 0x00005609520f791c cc1_main(llvm::ArrayRef<char const>, char const, void*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0xfe691c)
28 0x00005609520f3a3d ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0
29 0x00005609548120f5 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional
, std::allocator >, bool) const::'lambda'()>(long) Job.cpp:0:0 30 0x00005609540b4693 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x2fa3693)
31 0x0000560954812a28 clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional
, std::allocator >, bool) const (.part.165) Job.cpp:0:0 32 0x00005609547ebb29 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x36dab29)
33 0x00005609547ecd4f clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x36dbd4f)
34 0x00005609547fca95 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x36eba95)
35 0x0000560952011dd4 main (/opt/compiler-explorer/clang-trunk/bin/clang+++0xf00dd4)
36 0x00007f77eab4b0b3 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b3)
37 0x00005609520f35ba _start (/opt/compiler-explorer/clang-trunk/bin/clang+++0xfe25ba)
clang-13: error: clang frontend command failed with exit code 139 (use -v to see invocation) Compiler returned: 139 Compiler Explorer uses cookies and other related techs to serve you
llvmbot
AaronBallman
shafik
Extended Description
Following segment fault in frontend has borken many downstream applications (e.g., creduce).
It is tested on version 11.0.0 and 6.0.0.
$ ./clang++ test.cc test.cc:4:28: error: C++ requires a type specifier for all declarations typeof({union {x = 0}}) ^ test.cc:4:33: error: expected ';' at end of declaration list typeof({union {x = 0}}) ^ ; test.cc:4:34: error: expected ';' after union typeof({union {x = 0}}) ^ ; test.cc:5:9: error: expected member name or ';' after declaration specifiers } ^ test.cc:5:10: error: expected ';' after union } ^ ;
0 0x00007fc75ec6d0ea llvm::sys::PrintStackTrace(llvm::raw_ostream&) (/usr/lib/llvm-6.0/bin/../lib/libLLVM-6.0.so.1+0x81e0ea)
1 0x00007fc75ec6b366 llvm::sys::RunSignalHandlers() (/usr/lib/llvm-6.0/bin/../lib/libLLVM-6.0.so.1+0x81c366)
2 0x00007fc75ec6b49b (/usr/lib/llvm-6.0/bin/../lib/libLLVM-6.0.so.1+0x81c49b)
3 0x00007fc761efd8a0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x128a0)
4 0x0000557648d5f4b7 clang::Sema::ActOnTagFinishDefinition(clang::Scope, clang::Decl, clang::SourceRange) (/usr/lib/llvm-6.0/bin/clang+0xf994b7)
5 0x0000557648b0cac0 clang::Parser::ParseCXXMemberSpecification(clang::SourceLocation, clang::SourceLocation, clang::Parser::ParsedAttributesWithRange&, unsigned int, clang::Decl*) (/usr/lib/llvm-6.0/bin/clang+0xd46ac0)
6 0x0000557648b0f6c5 clang::Parser::ParseClassSpecifier(clang::tok::TokenKind, clang::SourceLocation, clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, bool, clang::Parser::DeclSpecContext, clang::Parser::ParsedAttributesWithRange&) (/usr/lib/llvm-6.0/bin/clang+0xd496c5)
7 0x0000557648ae9569 clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*) (/usr/lib/llvm-6.0/bin/clang+0xd23569)
8 0x0000557648af7ec1 clang::Parser::ParseSimpleDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&, bool, clang::Parser::ForRangeInit*) (/usr/lib/llvm-6.0/bin/clang+0xd31ec1)
9 0x0000557648af825b clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&) (/usr/lib/llvm-6.0/bin/clang+0xd3225b)
10 0x0000557648b5cd15 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation, clang::Parser::ParsedAttributesWithRange&) (/usr/lib/llvm-6.0/bin/clang+0xd96d15)
11 0x0000557648b5d3c8 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation) (/usr/lib/llvm-6.0/bin/clang+0xd973c8)
12 0x0000557648b60e70 clang::Parser::ParseCompoundStatementBody(bool) (/usr/lib/llvm-6.0/bin/clang+0xd9ae70)
13 0x0000557648b63559 clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/usr/lib/llvm-6.0/bin/clang+0xd9d559)
14 0x0000557648ad394b clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/usr/lib/llvm-6.0/bin/clang+0xd0d94b)
15 0x0000557648af4fdf clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::SourceLocation, clang::Parser::ForRangeInit) (/usr/lib/llvm-6.0/bin/clang+0xd2efdf)
16 0x0000557648acf0d1 clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/usr/lib/llvm-6.0/bin/clang+0xd090d1)
17 0x0000557648acf729 (/usr/lib/llvm-6.0/bin/clang+0xd09729)
18 0x0000557648ad59e5 clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) (/usr/lib/llvm-6.0/bin/clang+0xd0f9e5)
19 0x0000557648ad69d9 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr&) (/usr/lib/llvm-6.0/bin/clang+0xd109d9)
20 0x0000557648ad6ca0 clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr&) (/usr/lib/llvm-6.0/bin/clang+0xd10ca0)
21 0x0000557648acb7fb clang::ParseAST(clang::Sema&, bool, bool) (/usr/lib/llvm-6.0/bin/clang+0xd057fb)
22 0x000055764881ea27 clang::CodeGenAction::ExecuteAction() (/usr/lib/llvm-6.0/bin/clang+0xa58a27)
23 0x0000557648655b56 clang::FrontendAction::Execute() (/usr/lib/llvm-6.0/bin/clang+0x88fb56)
24 0x000055764861fbfc clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/usr/lib/llvm-6.0/bin/clang+0x859bfc)
25 0x0000557648700f13 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/lib/llvm-6.0/bin/clang+0x93af13)
26 0x000055764821ee08 cc1_main(llvm::ArrayRef<char const>, char const, void*) (/usr/lib/llvm-6.0/bin/clang+0x458e08)
27 0x000055764820d807 main (/usr/lib/llvm-6.0/bin/clang+0x447807)
28 0x00007fc75d50eb97 __libc_start_main /build/glibc-2ORdQG/glibc-2.27/csu/../csu/libc-start.c:344:0
29 0x000055764821c8aa _start (/usr/lib/llvm-6.0/bin/clang+0x4568aa)
Stack dump:
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: Preprocessed source(s) and associated run script(s) are located at: clang: note: diagnostic msg: /tmp/test-ab98fb.cpp clang: note: diagnostic msg: /tmp/test-ab98fb.sh clang: note: diagnostic msg:
$ cat /tmp/test-ab98fb.cpp
1 ""
1 "test.cc"
int main() { union { union { typeof({union {x = 0}}) } } }
$ cat /tmp/test-ab98fb.sh
Crash reproducer for clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
Driver args: "--driver-mode=g++" "test.cc"
Original command: "/usr/lib/llvm-6.0/bin/clang" "-cc1" "-triple" "x86_64-pc-linux-gnu" "-emit-obj" "-mrelax-all" "-disable-free" "-disable-llvm-verifier" "-discard-value-names" "-main-file-name" "test.cc" "-mrelocation-model" "static" "-mthread-model" "posix" "-mdisable-fp-elim" "-fmath-errno" "-masm-verbose" "-mconstructor-aliases" "-munwind-tables" "-fuse-init-array" "-target-cpu" "x86-64" "-dwarf-column-info" "-debugger-tuning=gdb" "-resource-dir" "/usr/lib/llvm-6.0/lib/clang/6.0.0" "-internal-isystem" "/usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0" "-internal-isystem" "/usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/x86_64-linux-gnu/c++/7.5.0" "-internal-isystem" "/usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/x86_64-linux-gnu/c++/7.5.0" "-internal-isystem" "/usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/backward" "-internal-isystem" "/usr/include/clang/6.0.0/include/" "-internal-isystem" "/usr/local/include" "-internal-isystem" "/usr/lib/llvm-6.0/lib/clang/6.0.0/include" "-internal-externc-isystem" "/usr/include/x86_64-linux-gnu" "-internal-externc-isystem" "/include" "-internal-externc-isystem" "/usr/include" "-fdeprecated-macro" "-fdebug-compilation-dir" "/data/xxx/docker_share/clang" "-ferror-limit" "19" "-fmessage-length" "119" "-fobjc-runtime=gcc" "-fcxx-exceptions" "-fexceptions" "-fdiagnostics-show-option" "-fcolor-diagnostics" "-o" "/tmp/test-0010a6.o" "-x" "c++" "test.cc"
"/usr/lib/llvm-6.0/bin/clang" "-cc1" "-triple" "x86_64-pc-linux-gnu" "-emit-obj" "-mrelax-all" "-disable-free" "-disable-llvm-verifier" "-discard-value-names" "-main-file-name" "test.cc" "-mrelocation-model" "static" "-mthread-model" "posix" "-mdisable-fp-elim" "-fmath-errno" "-masm-verbose" "-mconstructor-aliases" "-munwind-tables" "-fuse-init-array" "-target-cpu" "x86-64" "-dwarf-column-info" "-debugger-tuning=gdb" "-fdeprecated-macro" "-ferror-limit" "19" "-fmessage-length" "119" "-fobjc-runtime=gcc" "-fcxx-exceptions" "-fexceptions" "-fdiagnostics-show-option" "-fcolor-diagnostics" "-x" "c++" "test-ab98fb.cpp"