https://llvm.org/bugs/show_bug.cgi?id=31105
Bug ID: 31105
Summary: crash on x86_64-linux-gnu at -O3 in both 32-bit and
64-bit modes (Assertion `!contains(New, this) &&
"this->replaceAllUsesWith(expr(this)) is NOT valid!"'
failed.)
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: chengnian...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
$ clang-trunk -v
clang version 4.0.0 (trunk 287553)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: /usr/bin/../lib/gcc/i686-linux-gnu/5
Found candidate GCC installation: /usr/bin/../lib/gcc/i686-linux-gnu/5.3.0
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8.5
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/4.9.3
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/5.3.0
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/4.8
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
Selected GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/4.9
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$
$ clang-trunk -w -O3 small.c
clang-4.0: /tmp/llvm-builder/llvm-source-trunk/lib/IR/Value.cpp:373: void
llvm::Value::replaceAllUsesWith(llvm::Value*): Assertion `!contains(New, this)
&& "this->replaceAllUsesWith(expr(this)) is NOT valid!"' failed.
#0 0x0000000001d194a5 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/clang-trunk/bin/clang-4.0+0x1d194a5)
#1 0x0000000001d1747e llvm::sys::RunSignalHandlers()
(/usr/local/clang-trunk/bin/clang-4.0+0x1d1747e)
#2 0x0000000001d175e2 SignalHandler(int)
(/usr/local/clang-trunk/bin/clang-4.0+0x1d175e2)
#3 0x00007f5af316a340 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10340)
#4 0x00007f5af1f5bcc9 gsignal
/build/eglibc-3GlaMS/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007f5af1f5f0d8 abort
/build/eglibc-3GlaMS/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007f5af1f54b86 __assert_fail_base
/build/eglibc-3GlaMS/eglibc-2.19/assert/assert.c:92:0
#7 0x00007f5af1f54c32 (/lib/x86_64-linux-gnu/libc.so.6+0x2fc32)
#8 0x00000000019b7d8b llvm::Value::replaceAllUsesWith(llvm::Value*)
(/usr/local/clang-trunk/bin/clang-4.0+0x19b7d8b)
#9 0x0000000001d3ef72 llvm::CloneAndPruneIntoFromInst(llvm::Function*,
llvm::Function const*, llvm::Instruction const*, llvm::ValueMap<llvm::Value
const*, llvm::WeakVH, llvm::ValueMapConfig<llvm::Value const*,
llvm::sys::SmartMutex<false> > >&, bool,
llvm::SmallVectorImpl<llvm::ReturnInst*>&, char const*, llvm::ClonedCodeInfo*)
(/usr/local/clang-trunk/bin/clang-4.0+0x1d3ef72)
#10 0x0000000001d5d883 llvm::InlineFunction(llvm::CallSite,
llvm::InlineFunctionInfo&, llvm::AAResults*, bool)
(/usr/local/clang-trunk/bin/clang-4.0+0x1d5d883)
#11 0x0000000001a0a083 llvm::Inliner::inlineCalls(llvm::CallGraphSCC&)
(/usr/local/clang-trunk/bin/clang-4.0+0x1a0a083)
#12 0x000000000263a912 (anonymous
namespace)::CGPassManager::runOnModule(llvm::Module&)
(/usr/local/clang-trunk/bin/clang-4.0+0x263a912)
#13 0x00000000019826af llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/clang-trunk/bin/clang-4.0+0x19826af)
#14 0x0000000001e844bf (anonymous
namespace)::EmitAssemblyHelper::EmitAssembly(clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/usr/local/clang-trunk/bin/clang-4.0+0x1e844bf)
#15 0x0000000001e86335 clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions
const&, llvm::DataLayout const&, llvm::Module*, clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/usr/local/clang-trunk/bin/clang-4.0+0x1e86335)
#16 0x00000000024a9f1b
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/usr/local/clang-trunk/bin/clang-4.0+0x24a9f1b)
#17 0x000000000289f102 clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/clang-trunk/bin/clang-4.0+0x289f102)
#18 0x00000000024a50ef clang::CodeGenAction::ExecuteAction()
(/usr/local/clang-trunk/bin/clang-4.0+0x24a50ef)
#19 0x00000000021b48a6 clang::FrontendAction::Execute()
(/usr/local/clang-trunk/bin/clang-4.0+0x21b48a6)
#20 0x000000000218ea36
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/clang-trunk/bin/clang-4.0+0x218ea36)
#21 0x000000000223d7da
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/clang-trunk/bin/clang-4.0+0x223d7da)
#22 0x0000000000ab6538 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/clang-trunk/bin/clang-4.0+0xab6538)
#23 0x0000000000a58c09 main (/usr/local/clang-trunk/bin/clang-4.0+0xa58c09)
#24 0x00007f5af1f46ec5 __libc_start_main
/build/eglibc-3GlaMS/eglibc-2.19/csu/libc-start.c:321:0
#25 0x0000000000ab257e _start (/usr/local/clang-trunk/bin/clang-4.0+0xab257e)
Stack dump:
0. Program arguments: /usr/local/clang-trunk/bin/clang-4.0 -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
-momit-leaf-frame-pointer -dwarf-column-info -debugger-tuning=gdb -resource-dir
/usr/local/clang-trunk/bin/../lib/clang/4.0.0 -c-isystem . -c-isystem
/usr/local/include/csmith -c-isystem /usr/local/include/csmith
-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 -O3 -w -fdebug-compilation-dir
/home/cnsun/ramdisk/hermes/run-1/res/20161118-clang-trunk-m64-Weverything-g-O3-build-081317/delta
-ferror-limit 19 -fmessage-length 261 -fobjc-runtime=gcc
-fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp
-o /tmp/small-d62bd6.o -x c small.c
1. <eof> parser at end of file
2. Per-module optimization passes
3. Running pass 'CallGraph Pass Manager' on module 'small.c'.
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 287553)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/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-e11e5d.c
clang-4.0: note: diagnostic msg: /tmp/small-e11e5d.sh
clang-4.0: note: diagnostic msg:
********************
$
$ cat small.c
int a, b, c;
short fn1(short p1) {
int d;
for (;;) {
c = 0;
for (; c <= 5; c++) {
int e;
if (p1)
for (;; 0) {
int f;
for (;;) {
e = 4;
for (; e; e--)
d = p1;
break;
}
if (d)
continue;
for (; 0;)
return 5;
b = 4;
}
}
}
}
int main() {
return fn1(a);
}
$
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