[LLVMbugs] [Bug 22092] New: clang crashes on invalid code on x86_64-linux-gnu
bugzilla-daemon at llvm.org
bugzilla-daemon at llvm.org
Sun Jan 4 11:27:28 PST 2015
http://llvm.org/bugs/show_bug.cgi?id=22092
Bug ID: 22092
Summary: clang crashes on invalid code on x86_64-linux-gnu
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangbugs at nondot.org
Reporter: su at cs.ucdavis.edu
CC: llvmbugs at cs.uiuc.edu
Classification: Unclassified
The current clang trunk crashes when compiling the following (invalid) code in
both 32-bit and 64-bit modes on x86_64-linux-gnu.
This is a regression from clang 3.5.0.
$ clang-trunk -v
clang version 3.6.0 (trunk 225086)
Target: x86_64-unknown-linux-gnu
Thread model: posix
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.8.1
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4.6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.1
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
$
$ clang-3.5.0 -c small.c
small.c:1:1: warning: type specifier missing, defaults to 'int'
[-Wimplicit-int]
a = b ? : 0
^
small.c:1:5: error: use of undeclared identifier 'b'
a = b ? : 0
^
small.c:1:12: error: expected ';' after top level declarator
a = b ? : 0
^
;
1 warning and 2 errors generated.
$
$ clang-trunk -c small.c
small.c:1:1: warning: type specifier missing, defaults to 'int'
[-Wimplicit-int]
a = b ? : 0
^
clang: /tmp/llvm/tools/clang/lib/Sema/TreeTransform.h:7460: ExprResult
clang::TreeTransform<(anonymous
namespace)::TransformTypos>::TransformOpaqueValueExpr(clang::OpaqueValueExpr *)
[Derived = (anonymous namespace)::TransformTypos]: Assertion
`getDerived().AlreadyTransformed(E->getType()) && "opaque value expression
requires transformation"' failed.
#0 0x29dce68 llvm::sys::PrintStackTrace(_IO_FILE*)
(/usr/local/clang-trunk/bin/clang+0x29dce68)
#1 0x29de3bb (/usr/local/clang-trunk/bin/clang+0x29de3bb)
#2 0x7fc5cb618cb0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0xfcb0)
#3 0x7fc5ca4370d5 gsignal
/build/buildd/eglibc-2.15/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:64:0
#4 0x7fc5ca43a83b abort /build/buildd/eglibc-2.15/stdlib/abort.c:93:0
#5 0x7fc5ca42fd9e __assert_fail_base
/build/buildd/eglibc-2.15/assert/assert.c:55:0
#6 0x7fc5ca42fe42 (/lib/x86_64-linux-gnu/libc.so.6+0x2ee42)
#7 0xdf3422 (/usr/local/clang-trunk/bin/clang+0xdf3422)
#8 0xdd21eb clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*,
llvm::function_ref<clang::ActionResult<clang::Expr*, true> (clang::Expr*)>)
(/usr/local/clang-trunk/bin/clang+0xdd21eb)
#9 0xd56613
clang::Sema::CheckConditionalOperands(clang::ActionResult<clang::Expr*, true>&,
clang::ActionResult<clang::Expr*, true>&, clang::ActionResult<clang::Expr*,
true>&, clang::ExprValueKind&, clang::ExprObjectKind&, clang::SourceLocation)
(/usr/local/clang-trunk/bin/clang+0xd56613)
#10 0xd599a1 clang::Sema::ActOnConditionalOp(clang::SourceLocation,
clang::SourceLocation, clang::Expr*, clang::Expr*, clang::Expr*)
(/usr/local/clang-trunk/bin/clang+0xd599a1)
#11 0xb289cb
clang::Parser::ParseRHSOfBinaryExpression(clang::ActionResult<clang::Expr*,
true>, clang::prec::Level) (/usr/local/clang-trunk/bin/clang+0xb289cb)
#12 0xb27c26
clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState)
(/usr/local/clang-trunk/bin/clang+0xb27c26)
#13 0xb038c0
clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&,
clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*)
(/usr/local/clang-trunk/bin/clang+0xb038c0)
#14 0xb01359 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, unsigned
int, clang::SourceLocation*, clang::Parser::ForRangeInit*)
(/usr/local/clang-trunk/bin/clang+0xb01359)
#15 0xaeeab6
clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec&, clang::AccessSpecifier)
(/usr/local/clang-trunk/bin/clang+0xaeeab6)
#16 0xaee49c
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*, clang::AccessSpecifier)
(/usr/local/clang-trunk/bin/clang+0xaee49c)
#17 0xaed762
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*) (/usr/local/clang-trunk/bin/clang+0xaed762)
#18 0xaecabf
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&)
(/usr/local/clang-trunk/bin/clang+0xaecabf)
#19 0xae8830 clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/clang-trunk/bin/clang+0xae8830)
#20 0x705ede clang::FrontendAction::Execute()
(/usr/local/clang-trunk/bin/clang+0x705ede)
#21 0x6d8cbc clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/clang-trunk/bin/clang+0x6d8cbc)
#22 0x6ba90a clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/clang-trunk/bin/clang+0x6ba90a)
#23 0x6b15c2 cc1_main(llvm::ArrayRef<char const*>, char const*, void*)
(/usr/local/clang-trunk/bin/clang+0x6b15c2)
#24 0x6b8f92 main (/usr/local/clang-trunk/bin/clang+0x6b8f92)
#25 0x7fc5ca42276d __libc_start_main
/build/buildd/eglibc-2.15/csu/libc-start.c:258:0
#26 0x6b1229 _start (/usr/local/clang-trunk/bin/clang+0x6b1229)
Stack dump:
0. Program arguments: /usr/local/clang-trunk/bin/clang -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -main-file-name
small.c -mrelocation-model static -mthread-model posix -mdisable-fp-elim
-fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables
-fuse-init-array -target-cpu x86-64 -target-linker-version 2.22
-dwarf-column-info -coverage-file
/data2/c-hunter/test/ccg/run1/reduce/b1/small.c -resource-dir
/usr/local/clang-trunk/bin/../lib/clang/3.6.0 -internal-isystem
/usr/local/include -internal-isystem
/usr/local/clang-trunk/bin/../lib/clang/3.6.0/include -internal-externc-isystem
/usr/include/x86_64-linux-gnu -internal-externc-isystem /include
-internal-externc-isystem /usr/include -fdebug-compilation-dir
/data2/c-hunter/test/ccg/run1/reduce/b1 -ferror-limit 19 -fmessage-length 112
-mstackrealign -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics
-o small.o -x c small.c
1. <eof> parser at end of file
clang: error: unable to execute command: Aborted (core dumped)
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.6.0 (trunk 225086)
Target: x86_64-unknown-linux-gnu
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to
http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and
associated run script.
clang: note: diagnostic msg:
********************
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/small-2eb899.c
clang: note: diagnostic msg: /tmp/small-2eb899.sh
clang: note: diagnostic msg:
********************
$
--------------------
a = b ? : 0
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