Segmentation fault with C++0x lambda

[llvmbot]

Bugzilla Link	10943
Resolution	FIXED
Resolved on	Feb 16, 2012 16:32
Version	trunk
OS	Linux
Attachments	Preprocessed source
Reporter	LLVM Bugzilla Contributor
CC	@DougGregor,@efriedma-quic

Extended Description

clang version 3.0 (trunk 139933)
Target: x86_64-unknown-linux-gnu
Thread model: posix

Compiled with: g++ (GCC) 4.6.1 20110819 (prerelease)

Command line: clang++ -pipe -Wall -g -I../../Prelude/include -Wno-invalid-offsetof -std=gnu++0x -c Canvas.cpp -o debug/Canvas.o

Output:

0 clang 0x0000000002afcdd2
1 clang 0x0000000002afcbce
2 libpthread.so.0 0x00007f83087fc800
3 clang 0x0000000001406c88 clang::Expr::isTypeDependent() const + 12
4 clang 0x0000000001db8808 clang::CallExpr::CallExpr(clang::ASTContext&, clang::Expr*, clang::Expr**, unsigned int, clang::QualType, clang::ExprValueKind, clang::SourceLocation) + 264
5 clang 0x00000000016f7290 clang::Sema::ActOnCallExpr(clang::Scope*, clang::Expr*, clang::SourceLocation, clang::ASTMultiPtrclang::Expr*, clang::SourceLocation, clang::Expr*) + 978
6 clang 0x00000000015d42c4 clang::Parser::ParsePostfixExpressionSuffix(clang::ActionResult<clang::Expr*, true>) + 2576
7 clang 0x00000000015d38a1 clang::Parser::ParseCastExpression(bool, bool, bool&, bool) + 7369
8 clang 0x00000000015d1b95 clang::Parser::ParseCastExpression(bool, bool, bool) + 55
9 clang 0x00000000015d1f70 clang::Parser::ParseCastExpression(bool, bool, bool&, bool) + 920
10 clang 0x00000000015d1b95 clang::Parser::ParseCastExpression(bool, bool, bool) + 55
11 clang 0x00000000015d2997 clang::Parser::ParseCastExpression(bool, bool, bool&, bool) + 3519
12 clang 0x00000000015d1b95 clang::Parser::ParseCastExpression(bool, bool, bool) + 55
13 clang 0x00000000015d1114 clang::Parser::ParseAssignmentExpression() + 168
14 clang 0x00000000015d0f1a clang::Parser::ParseExpression() + 24
15 clang 0x000000000159c007 clang::Parser::ParseReturnStatement(clang::ParsedAttributes&) + 473
16 clang 0x0000000001597866 clang::Parser::ParseStatementOrDeclaration(clang::ASTOwningVector<clang::Stmt*, 32u>&, bool) + 2794
17 clang 0x0000000001599599 clang::Parser::ParseCompoundStatementBody(bool) + 1123
18 clang 0x000000000159d2e4 clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) + 240
19 clang 0x00000000015b285f clang::Parser::ParseLexedMethodDef(clang::Parser::LexedMethod&) + 907
20 clang 0x00000000015b1cfb clang::Parser::LexedMethod::ParseLexedMethodDefs() + 35
21 clang 0x00000000015b2494 clang::Parser::ParseLexedMethodDefs(clang::Parser::ParsingClass&) + 236
22 clang 0x00000000015cc37c clang::Parser::ParseCXXMemberSpecification(clang::SourceLocation, unsigned int, clang::Decl*) + 2442
23 clang 0x00000000015c9235 clang::Parser::ParseClassSpecifier(clang::tok::TokenKind, clang::SourceLocation, clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, bool) + 6031
24 clang 0x00000000015bad20 clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, clang::Parser::DeclSpecContext) + 7156
25 clang 0x000000000159f5c0 clang::Parser::ParseSingleDeclarationAfterTemplate(unsigned int, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ParsingDeclRAIIObject&, clang::SourceLocation&, clang::AccessSpecifier) + 420
26 clang 0x000000000159f3cf clang::Parser::ParseTemplateDeclarationOrSpecialization(unsigned int, clang::SourceLocation&, clang::AccessSpecifier) + 1015
27 clang 0x000000000159ef31 clang::Parser::ParseDeclarationStartingWithTemplate(unsigned int, clang::SourceLocation&, clang::AccessSpecifier) + 189
28 clang 0x00000000015b7106 clang::Parser::ParseDeclaration(clang::ASTOwningVector<clang::Stmt*, 32u>&, unsigned int, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&) + 230
29 clang 0x00000000015a9d20 clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::Parser::ParsingDeclSpec*) + 1580
30 clang 0x00000000015c54ec clang::Parser::ParseInnerNamespace(std::vector<clang::SourceLocation, std::allocatorclang::SourceLocation >&, std::vector<clang::IdentifierInfo*, std::allocatorclang::IdentifierInfo* >&, std::vector<clang::SourceLocation, std::allocatorclang::SourceLocation >&, unsigned int, clang::SourceLocation&, clang::SourceLocation&, clang::ParsedAttributes&, clang::SourceLocation&) + 180
31 clang 0x00000000015c537f clang::Parser::ParseNamespace(unsigned int, clang::SourceLocation&, clang::SourceLocation) + 3147
32 clang 0x00000000015b7232 clang::Parser::ParseDeclaration(clang::ASTOwningVector<clang::Stmt*, 32u>&, unsigned int, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&) + 530
33 clang 0x00000000015a9d20 clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::Parser::ParsingDeclSpec*) + 1580
34 clang 0x00000000015a9645 clang::Parser::ParseTopLevelDecl(clang::OpaquePtrclang::DeclGroupRef&) + 309
35 clang 0x0000000001589542 clang::ParseAST(clang::Sema&, bool) + 461
36 clang 0x00000000012bf2ff clang::ASTFrontendAction::ExecuteAction() + 265
37 clang 0x0000000001415d73 clang::CodeGenAction::ExecuteAction() + 975
38 clang 0x00000000012bef59 clang::FrontendAction::Execute() + 325
39 clang 0x00000000012a15ea clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 740
40 clang 0x0000000001273907 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 999
41 clang 0x0000000001264b11 cc1_main(char const**, char const**, char const*, void*) + 921
42 clang 0x000000000126ef37 main + 481
43 libc.so.6 0x00007f8307b0813d __libc_start_main + 237
44 clang 0x00000000012641f9
Stack dump:
0. Program arguments: /home/zoxc/llvm-build/build/Debug+Asserts/bin/clang -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -main-file-name Canvas.cpp -mrelocation-model static -mdisable-fp-elim -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-linker-version 2.21.1.20110627 -momit-leaf-frame-pointer -g -coverage-file debug/Canvas.o -resource-dir /home/zoxc/llvm-build/build/Debug+Asserts/bin/../lib/clang/3.0 -I ../../Prelude/include -fmodule-cache-path /var/tmp/clang-module-cache -Wall -Wno-invalid-offsetof -std=gnu++0x -fdeprecated-macro -ferror-limit 19 -fmessage-length 141 -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -o debug/Canvas.o -x c++ Canvas.cpp

1. ./Common.hpp:48:5: current parser token ')'
2. ./Common.hpp:13:1: parsing namespace 'Reindeer'
3. ./Common.hpp:33:68: parsing struct/union/class body 'Map'
4. ./Common.hpp:44:3: parsing function body 'get_create'
5. ./Common.hpp:44:3: in compound statement ('{}')
   clang: error: unable to execute command: Segmentation fault
   clang: error: clang frontend command failed due to signal 2 (use -v to see invocation)
   clang: note: diagnostic msg: Please submit a bug report to http://llvm.org/bugs/ and include command line arguments and all diagnostic information.
   clang: note: diagnostic msg: Preprocessed source(s) are located at:
   clang: note: diagnostic msg: /tmp/Canvas-V23lKw.ii

[efriedma-quic]

clang's lambda support is nowhere near complete... so it's not surprising this crashes. I'll leave this open as a test for when that support is more complete.

[lattner]

Eli is working on this now.

[DougGregor]

This is fixed in top-of-tree Clang (r150720).