[LLVMbugs] [Bug 22338] New: clang crashes on valid code at -O2 and -O3 x86_64-linux-gnu
bugzilla-daemon at llvm.org
bugzilla-daemon at llvm.org
Mon Jan 26 16:31:20 PST 2015
http://llvm.org/bugs/show_bug.cgi?id=22338
Bug ID: 22338
Summary: clang crashes on valid code at -O2 and -O3
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 and 3.5.x crash when compiling the following test case
on x86_64-linux-gnu at -O2 and -O3 in both 32-bit and 64-bit modes.
This is a regression from 3.4.x.
$ clang-trunk -v
clang version 3.7.0 (trunk 227058)
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-trunk -Os -c small.c
$ clang-3.4.2 -O2 -c small.c
$
$ clang-trunk -O2 -c small.c
clang: /tmp/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:801: bool
llvm::SelectionDAG::RemoveNodeFromCSEMaps(llvm::SDNode *): Assertion
`N->getOpcode() != ISD::DELETED_NODE && "DELETED_NODE in CSEMap!"' failed.
#0 0x2a512e8 llvm::sys::PrintStackTrace(_IO_FILE*)
(/usr/local/clang-trunk/bin/clang+0x2a512e8)
#1 0x2a523bb (/usr/local/clang-trunk/bin/clang+0x2a523bb)
#2 0x7f794d830cb0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0xfcb0)
#3 0x7f794c64f0d5 gsignal
/build/buildd/eglibc-2.15/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:64:0
#4 0x7f794c65283b abort /build/buildd/eglibc-2.15/stdlib/abort.c:93:0
#5 0x7f794c647d9e __assert_fail_base
/build/buildd/eglibc-2.15/assert/assert.c:55:0
#6 0x7f794c647e42 (/lib/x86_64-linux-gnu/libc.so.6+0x2ee42)
#7 0x211eee1 llvm::SelectionDAG::RemoveNodeFromCSEMaps(llvm::SDNode*)
(/usr/local/clang-trunk/bin/clang+0x211eee1)
#8 0x2146c61 llvm::SelectionDAG::UpdateNodeOperands(llvm::SDNode*,
llvm::SDValue, llvm::SDValue) (/usr/local/clang-trunk/bin/clang+0x2146c61)
#9 0x20fe467 (/usr/local/clang-trunk/bin/clang+0x20fe467)
#10 0x20fdb02 llvm::SelectionDAG::Legalize()
(/usr/local/clang-trunk/bin/clang+0x20fdb02)
#11 0x219fc4c llvm::SelectionDAGISel::CodeGenAndEmitDAG()
(/usr/local/clang-trunk/bin/clang+0x219fc4c)
#12 0x219e65e llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function
const&) (/usr/local/clang-trunk/bin/clang+0x219e65e)
#13 0x219b4d4
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&)
(/usr/local/clang-trunk/bin/clang+0x219b4d4)
#14 0x1f9c6f6 (/usr/local/clang-trunk/bin/clang+0x1f9c6f6)
#15 0x233fb1c llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
(/usr/local/clang-trunk/bin/clang+0x233fb1c)
#16 0x29cff91 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/local/clang-trunk/bin/clang+0x29cff91)
#17 0x29d01cb llvm::FPPassManager::runOnModule(llvm::Module&)
(/usr/local/clang-trunk/bin/clang+0x29d01cb)
#18 0x29d06a5 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/clang-trunk/bin/clang+0x29d06a5)
#19 0x9164fd clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions
const&, llvm::StringRef, llvm::Module*, clang::BackendAction,
llvm::raw_ostream*) (/usr/local/clang-trunk/bin/clang+0x9164fd)
#20 0x90ab65 (/usr/local/clang-trunk/bin/clang+0x90ab65)
#21 0xafe6a3 clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/clang-trunk/bin/clang+0xafe6a3)
#22 0x70c0fe clang::FrontendAction::Execute()
(/usr/local/clang-trunk/bin/clang+0x70c0fe)
#23 0x6de90c clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/clang-trunk/bin/clang+0x6de90c)
#24 0x6c01a6 clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/clang-trunk/bin/clang+0x6c01a6)
#25 0x6b6e72 cc1_main(llvm::ArrayRef<char const*>, char const*, void*)
(/usr/local/clang-trunk/bin/clang+0x6b6e72)
#26 0x6be93b main (/usr/local/clang-trunk/bin/clang+0x6be93b)
#27 0x7f794c63a76d __libc_start_main
/build/buildd/eglibc-2.15/csu/libc-start.c:258:0
#28 0x6b6ad9 _start (/usr/local/clang-trunk/bin/clang+0x6b6ad9)
Stack dump:
0. Program arguments: /usr/local/clang-trunk/bin/clang -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -disable-free -main-file-name small.c
-mrelocation-model static -mthread-model posix -fmath-errno -masm-verbose
-mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64
-target-linker-version 2.22 -momit-leaf-frame-pointer -dwarf-column-info
-coverage-file
/data2/c-hunter-results/C/insert-bugs/REDUCED/20150125-clang-trunk-m64-O3-build-0330/small.c
-resource-dir /usr/local/clang-trunk/bin/../lib/clang/3.7.0 -internal-isystem
/usr/local/include -internal-isystem
/usr/local/clang-trunk/bin/../lib/clang/3.7.0/include -internal-externc-isystem
/usr/include/x86_64-linux-gnu -internal-externc-isystem /include
-internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir
/data2/c-hunter-results/C/insert-bugs/REDUCED/20150125-clang-trunk-m64-O3-build-0330
-ferror-limit 19 -fmessage-length 107 -mstackrealign -fobjc-runtime=gcc
-fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp
-o small.o -x c small.c
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'small.c'.
4. Running pass 'X86 DAG->DAG Instruction Selection' on function '@fn3'
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 3.7.0 (trunk 227058)
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-1ae5d0.c
clang: note: diagnostic msg: /tmp/small-1ae5d0.sh
clang: note: diagnostic msg:
********************
$
----------------------------
int a, b, c, d, e, f, g, h;
int
fn1 (int p1, int p2)
{
return p1 ? p1 : p1 << p2;
}
void
fn2 ()
{
int i, j = 1, k = -1;
lbl:
for (; b; b = 0)
;
h = 1 % j;
f = (h <= 0) + k;
g = fn1 (f, 2);
i = g && 1;
if (!i)
{
c = 1 % j;
d = ((c && 1) <= i) + k;
e = fn1 (d, 2);
for (; b;)
{
a = 0;
j = 0;
}
goto lbl;
}
}
void
fn3 ()
{
fn2 ();
}
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