https://llvm.org/bugs/show_bug.cgi?id=30321
Bug ID: 30321
Summary: clang crashes on valid C++ code: Assertion `Permissive
|| !(!LabelAndGotoScopes.count(TheLabel->getStmt()))'
failed
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: s...@cs.ucdavis.edu
CC: dgre...@apple.com, llvm-bugs@lists.llvm.org
Classification: Unclassified
The code is accepted by GCC. It crashes at least all versions of Clang since
2.9.
$ clang++ -v
clang version 4.0.0 (trunk 280730)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/clang-trunk/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9.3
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4.7
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/4.8.5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.1.1
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$
$ g++-6.2 -c small.cpp
$
$ clang++ -c small.cpp
small.cpp:4:15: error: use of undeclared label 'T'
void *p = &&T;
^
clang-4.0:
/tmp/llvm-builder/llvm-source-trunk/tools/clang/lib/Sema/JumpDiagnostics.cpp:678:
void {anonymous}::JumpScopeChecker::VerifyIndirectJumps(): Assertion
`Permissive || !(!LabelAndGotoScopes.count(TheLabel->getStmt()))' failed.
#0 0x0000000001e484f5 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/clang-trunk/bin/clang-4.0+0x1e484f5)
#1 0x0000000001e465de llvm::sys::RunSignalHandlers()
(/usr/local/clang-trunk/bin/clang-4.0+0x1e465de)
#2 0x0000000001e46740 SignalHandler(int)
(/usr/local/clang-trunk/bin/clang-4.0+0x1e46740)
#3 0x00007f1a160f2340 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10340)
#4 0x00007f1a14ee3cc9 gsignal
/build/eglibc-3GlaMS/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007f1a14ee70d8 abort
/build/eglibc-3GlaMS/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007f1a14edcb86 __assert_fail_base
/build/eglibc-3GlaMS/eglibc-2.19/assert/assert.c:92:0
#7 0x00007f1a14edcc32 (/lib/x86_64-linux-gnu/libc.so.6+0x2fc32)
#8 0x0000000003037468 (anonymous
namespace)::JumpScopeChecker::VerifyIndirectJumps()
(/usr/local/clang-trunk/bin/clang-4.0+0x3037468)
#9 0x0000000003039970 clang::Sema::DiagnoseInvalidJumps(clang::Stmt*)
(/usr/local/clang-trunk/bin/clang-4.0+0x3039970)
#10 0x0000000002c48a8f clang::Sema::ActOnFinishFunctionBody(clang::Decl*,
clang::Stmt*, bool) (/usr/local/clang-trunk/bin/clang-4.0+0x2c48a8f)
#11 0x0000000002fe3791
clang::Sema::InstantiateFunctionDefinition(clang::SourceLocation,
clang::FunctionDecl*, bool, bool, bool)
(/usr/local/clang-trunk/bin/clang-4.0+0x2fe3791)
#12 0x0000000002fe20e7 clang::Sema::PerformPendingInstantiations(bool)
(/usr/local/clang-trunk/bin/clang-4.0+0x2fe20e7)
#13 0x0000000002b9080c clang::Sema::ActOnEndOfTranslationUnit()
(/usr/local/clang-trunk/bin/clang-4.0+0x2b9080c)
#14 0x0000000002982085
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&)
(/usr/local/clang-trunk/bin/clang-4.0+0x2982085)
#15 0x0000000002979393 clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/clang-trunk/bin/clang-4.0+0x2979393)
#16 0x00000000025ea82e clang::CodeGenAction::ExecuteAction()
(/usr/local/clang-trunk/bin/clang-4.0+0x25ea82e)
#17 0x00000000022e8cce clang::FrontendAction::Execute()
(/usr/local/clang-trunk/bin/clang-4.0+0x22e8cce)
#18 0x00000000022be326
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/clang-trunk/bin/clang-4.0+0x22be326)
#19 0x00000000023783d2
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/clang-trunk/bin/clang-4.0+0x23783d2)
#20 0x0000000000b567a0 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/clang-trunk/bin/clang-4.0+0xb567a0)
#21 0x0000000000b0123f main (/usr/local/clang-trunk/bin/clang-4.0+0xb0123f)
#22 0x00007f1a14eceec5 __libc_start_main
/build/eglibc-3GlaMS/eglibc-2.19/csu/libc-start.c:321:0
#23 0x0000000000b528fe _start (/usr/local/clang-trunk/bin/clang-4.0+0xb528fe)
Stack dump:
0. Program arguments: /usr/local/clang-trunk/bin/clang-4.0 -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -main-file-name
small.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 -debugger-tuning=gdb
-coverage-notes-file /data2/small.gcno -resource-dir
/usr/local/clang-trunk/bin/../lib/clang/4.0.0 -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/c++/4.9 -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/x86_64-linux-gnu/c++/4.9
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/x86_64-linux-gnu/c++/4.9
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../include/c++/4.9/backward
-internal-isystem /usr/local/include -internal-isystem
/usr/local/clang-trunk/bin/../lib/clang/4.0.0/include -internal-externc-isystem
/usr/include/x86_64-linux-gnu -internal-externc-isystem /include
-internal-externc-isystem /usr/include -fdeprecated-macro
-fdebug-compilation-dir /data2 -ferror-limit 19 -fmessage-length 153
-fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option
-fcolor-diagnostics -o small.o -x c++ small.cpp
1. <eof> parser at end of file
2. small.cpp:1:30: instantiating function definition 'f<int>'
clang-4.0: error: unable to execute command: Aborted (core dumped)
clang-4.0: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 4.0.0 (trunk 280730)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/clang-trunk/bin
clang-4.0: 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-4.0: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-4.0: note: diagnostic msg: /tmp/small-b2f8d1.cpp
clang-4.0: note: diagnostic msg: /tmp/small-b2f8d1.sh
clang-4.0: note: diagnostic msg:
********************
$
---------------------------------------
template < typename T > void f ()
{
T:
void *p = &&T;
goto *p;
}
int main ()
{
f < int > ();
return 0;
}
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