https://llvm.org/bugs/show_bug.cgi?id=28902
Bug ID: 28902
Summary: Segmentation fault in TokenLexer::Lex
Product: clang
Version: 3.8
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: vanya...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
On the following input clang crashes.
float foo2;
unsigned ((bar3 [foo2 < (unsigned (&)[)+(struct foo1
{
}
&)]))
{
}
0 libLLVMSupport.so.3.7 0x00007fc352e4218d
llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 45
1 libLLVMSupport.so.3.7 0x00007fc352e41061
2 libc.so.6 0x00007fc3521831f0
3 clang-3.7 0x0000000001451b00
clang::TokenLexer::Lex(clang::Token&) + 368
4 clang-3.7 0x000000000144dcaf
clang::Preprocessor::Lex(clang::Token&) + 95
5 clang-3.7 0x000000000141183e
clang::Preprocessor::CachingLex(clang::Token&) + 190
6 clang-3.7 0x000000000144dc8b
clang::Preprocessor::Lex(clang::Token&) + 59
7 clang-3.7 0x0000000000a6762e
8 clang-3.7 0x0000000000a9cb2b
clang::Parser::ParseCXXMemberSpecification(clang::SourceLocation,
clang::SourceLocation, clang::Parser::ParsedAttributesWithRange&, unsigned int,
clang::Decl*) + 1835
9 clang-3.7 0x0000000000a9e23e
clang::Parser::ParseClassSpecifier(clang::tok::TokenKind,
clang::SourceLocation, clang::DeclSpec&, clang::Parser::ParsedTemplateInfo
const&, clang::AccessSpecifier, bool, clang::Parser::DeclSpecContext,
clang::Parser::ParsedAttributesWithRange&) + 3182
10 clang-3.7 0x0000000000a80648
clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&,
clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier,
clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*) + 3496
11 clang-3.7 0x0000000000a81e38
clang::Parser::ParseSpecifierQualifierList(clang::DeclSpec&,
clang::AccessSpecifier, clang::Parser::DeclSpecContext) + 72
12 clang-3.7 0x0000000000aa968d
clang::Parser::ParseParenExpression(clang::Parser::ParenParseOption&, bool,
bool, clang::OpaquePtr<clang::QualType>&, clang::SourceLocation&) + 973
13 clang-3.7 0x0000000000aa1cda
clang::Parser::ParseCastExpression(bool, bool, bool&,
clang::Parser::TypeCastState) + 458
14 clang-3.7 0x0000000000aa478d
clang::Parser::ParseCastExpression(bool, bool, clang::Parser::TypeCastState) +
29
15 clang-3.7 0x0000000000aa502e
clang::Parser::ParseRHSOfBinaryExpression(clang::ActionResult<clang::Expr*,
true>, clang::prec::Level) + 1934
16 clang-3.7 0x0000000000aa4e2a
clang::Parser::ParseRHSOfBinaryExpression(clang::ActionResult<clang::Expr*,
true>, clang::prec::Level) + 1418
17 clang-3.7 0x0000000000aa926e
clang::Parser::ParseConstantExpression(clang::Parser::TypeCastState) + 62
18 clang-3.7 0x0000000000a859b7
clang::Parser::ParseBracketDeclarator(clang::Declarator&) + 1015
19 clang-3.7 0x0000000000a8cf3e
clang::Parser::ParseDirectDeclarator(clang::Declarator&) + 1022
20 clang-3.7 0x0000000000a84d9e
clang::Parser::ParseDeclaratorInternal(clang::Declarator&, void
(clang::Parser::*)(clang::Declarator&)) + 718
21 clang-3.7 0x0000000000a8c9b3
clang::Parser::ParseParenDeclarator(clang::Declarator&) + 595
22 clang-3.7 0x0000000000a8d5ab
clang::Parser::ParseDirectDeclarator(clang::Declarator&) + 2667
23 clang-3.7 0x0000000000a84d9e
clang::Parser::ParseDeclaratorInternal(clang::Declarator&, void
(clang::Parser::*)(clang::Declarator&)) + 718
24 clang-3.7 0x0000000000a8c9b3
clang::Parser::ParseParenDeclarator(clang::Declarator&) + 595
25 clang-3.7 0x0000000000a8d5ab
clang::Parser::ParseDirectDeclarator(clang::Declarator&) + 2667
26 clang-3.7 0x0000000000a84d9e
clang::Parser::ParseDeclaratorInternal(clang::Declarator&, void
(clang::Parser::*)(clang::Declarator&)) + 718
27 clang-3.7 0x0000000000a855b2
clang::Parser::ParseDeclarator(clang::Declarator&) + 18
28 clang-3.7 0x0000000000a876bf
clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, unsigned int,
clang::SourceLocation*, clang::Parser::ForRangeInit*) + 623
29 clang-3.7 0x0000000000a6b8b2
clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec&, clang::AccessSpecifier) + 274
30 clang-3.7 0x0000000000a6bef1
31 clang-3.7 0x0000000000a6bf1f
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*, clang::AccessSpecifier) + 31
32 clang-3.7 0x0000000000a724ef
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*) + 255
33 clang-3.7 0x0000000000a72e89
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) + 393
34 clang-3.7 0x0000000000a6732b clang::ParseAST(clang::Sema&, bool,
bool) + 459
35 clang-3.7 0x00000000008c2f46 clang::FrontendAction::Execute() +
454
36 clang-3.7 0x000000000089a2a9
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 297
37 clang-3.7 0x0000000000936073
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1923
38 clang-3.7 0x0000000000619b10 cc1_main(llvm::ArrayRef<char
const*>, char const*, void*) + 2272
39 clang-3.7 0x0000000000615032 main + 978
40 libc.so.6 0x00007fc352170865 __libc_start_main + 245
41 clang-3.7 0x0000000000617c09 _start + 41
Stack dump:
0. Program arguments:
/nix/store/yfnk21i2c1ajy136l06g7czhw6ar1sdl-clang-3.7.1/bin/clang-3.7 -cc1
-triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free
-disable-llvm-verifier -main-file-name g1.cpp -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 -nostdsysteminc -resource-dir
/nix/store/yfnk21i2c1ajy136l06g7czhw6ar1sdl-clang-3.7.1/bin/../lib/clang/3.7.1
-idirafter /nix/store/gwl3ppqj4i730nhd4f50ncl5jc4n97ks-glibc-2.23/include
-idirafter
/nix/store/yfnk21i2c1ajy136l06g7czhw6ar1sdl-clang-3.7.1/lib/gcc/*/*/include-fixed
-isystem
/nix/store/c7ipds48nb7sfzhb7vqp26rrllirxwxv-gcc-5.3.0/include/c++/5.3.0
-isystem
/nix/store/c7ipds48nb7sfzhb7vqp26rrllirxwxv-gcc-5.3.0/include/c++/5.3.0/x86_64-unknown-linux-gnu
-internal-isystem
/nix/store/yfnk21i2c1ajy136l06g7czhw6ar1sdl-clang-3.7.1/bin/../lib/clang/3.7.1/include
-fdeprecated-macro -fdebug-compilation-dir
/home/ivan/d/build-cppgen-Desktop-Debug -ferror-limit 0 -fmessage-length 190
-mstackrealign -fobjc-runtime=gcc -fcxx-exceptions -fexceptions
-fdiagnostics-show-option -fcolor-diagnostics -o /tmp/g1-7fd6f4.o -x c++ g1.cpp
1. <invalid loc> <Spelling=<invalid loc>>: unknown current parser token
2. g1.cpp:2:43: parsing struct/union/class body 'foo1'
clang-3.7: error: unable to execute command: Segmentation fault
clang-3.7: error: clang frontend command failed due to signal (use -v to see
invocation)
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