[llvm-bugs] [Bug 28367] New: clang crashes on valid code at -O1 and above on x86_64-linux-gnu: Assertion `II->getParent() == &*BI && "Moved to a different block!"' failed
via llvm-bugs
llvm-bugs at lists.llvm.org
Wed Jun 29 18:14:28 PDT 2016
https://llvm.org/bugs/show_bug.cgi?id=28367
Bug ID: 28367
Summary: clang crashes on valid code at -O1 and above on
x86_64-linux-gnu: Assertion `II->getParent() == &*BI
&& "Moved to a different block!"' failed
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: llvm-bugs at lists.llvm.org
Classification: Unclassified
The current clang trunk crashes when compiling the following test case on
x86_64-linux-gnu at -O1 and above in both 32-bit and 64-bit modes.
This is a regression from 3.8.x.
$ clang-trunk -v
clang version 3.9.0 (trunk 274113)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/tools/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
$
$ clang-trunk -O0 -c small.c
$ clang-3.8 -O1 -c small.c
$
$ clang-trunk -O1 -c small.c
clang-3.9:
/tmp/llvm-builder/llvm-source-trunk/lib/Transforms/Scalar/Reassociate.cpp:2201:
llvm::PreservedAnalyses llvm::ReassociatePass::run(llvm::Function&,
llvm::FunctionAnalysisManager&): Assertion `II->getParent() == &*BI && "Moved
to a different block!"' failed.
#0 0x0000000001d30e95 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/clang-trunk/bin/clang-3.9+0x1d30e95)
#1 0x0000000001d2ed26 llvm::sys::RunSignalHandlers()
(/usr/local/clang-trunk/bin/clang-3.9+0x1d2ed26)
#2 0x0000000001d2ef44 SignalHandler(int)
(/usr/local/clang-trunk/bin/clang-3.9+0x1d2ef44)
#3 0x00007fb075f64340 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10340)
#4 0x00007fb074d55cc9 gsignal
/build/eglibc-3GlaMS/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007fb074d590d8 abort
/build/eglibc-3GlaMS/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007fb074d4eb86 __assert_fail_base
/build/eglibc-3GlaMS/eglibc-2.19/assert/assert.c:92:0
#7 0x00007fb074d4ec32 (/lib/x86_64-linux-gnu/libc.so.6+0x2fc32)
#8 0x0000000001c655d8 llvm::ReassociatePass::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/usr/local/clang-trunk/bin/clang-3.9+0x1c655d8)
#9 0x0000000001c65723 (anonymous
namespace)::ReassociateLegacyPass::runOnFunction(llvm::Function&)
(/usr/local/clang-trunk/bin/clang-3.9+0x1c65723)
#10 0x00000000019981f3 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/local/clang-trunk/bin/clang-3.9+0x19981f3)
#11 0x00000000025b67c7 (anonymous
namespace)::CGPassManager::runOnModule(llvm::Module&)
(/usr/local/clang-trunk/bin/clang-3.9+0x25b67c7)
#12 0x0000000001998938 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/clang-trunk/bin/clang-3.9+0x1998938)
#13 0x0000000001e837d8 clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions
const&, llvm::DataLayout const&, llvm::Module*, clang::BackendAction,
llvm::raw_pwrite_stream*) (/usr/local/clang-trunk/bin/clang-3.9+0x1e837d8)
#14 0x00000000024a0f7d
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/usr/local/clang-trunk/bin/clang-3.9+0x24a0f7d)
#15 0x00000000028189ed clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x28189ed)
#16 0x00000000024a12de clang::CodeGenAction::ExecuteAction()
(/usr/local/clang-trunk/bin/clang-3.9+0x24a12de)
#17 0x00000000021aeb4e clang::FrontendAction::Execute()
(/usr/local/clang-trunk/bin/clang-3.9+0x21aeb4e)
#18 0x00000000021842f6
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/clang-trunk/bin/clang-3.9+0x21842f6)
#19 0x000000000223bec2
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/clang-trunk/bin/clang-3.9+0x223bec2)
#20 0x0000000000afd2d8 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/clang-trunk/bin/clang-3.9+0xafd2d8)
#21 0x0000000000ab04dc main (/usr/local/clang-trunk/bin/clang-3.9+0xab04dc)
#22 0x00007fb074d40ec5 __libc_start_main
/build/eglibc-3GlaMS/eglibc-2.19/csu/libc-start.c:321:0
#23 0x0000000000af9344 _start (/usr/local/clang-trunk/bin/clang-3.9+0xaf9344)
Stack dump:
0. Program arguments: /usr/local/clang-trunk/bin/clang-3.9 -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
-coverage-file /data2/small.c -resource-dir
/usr/local/clang-trunk/bin/../lib/clang/3.9.0 -internal-isystem
/usr/local/include -internal-isystem
/usr/local/clang-trunk/bin/../lib/clang/3.9.0/include -internal-externc-isystem
/usr/include/x86_64-linux-gnu -internal-externc-isystem /include
-internal-externc-isystem /usr/include -O1 -fdebug-compilation-dir /data2
-ferror-limit 19 -fmessage-length 107 -fobjc-runtime=gcc
-fdiagnostics-show-option -fcolor-diagnostics -o small.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'.
4. Running pass 'Reassociate expressions' on function '@fn1'
clang-3.9: error: unable to execute command: Aborted (core dumped)
clang-3.9: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.9.0 (trunk 274113)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/tools/bin
clang-3.9: 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-3.9: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-3.9: note: diagnostic msg: /tmp/small-6db488.c
clang-3.9: note: diagnostic msg: /tmp/small-6db488.sh
clang-3.9: note: diagnostic msg:
********************
$
-----------------------------------------
int a, c;
static int b;
void fn1 ()
{
int d = 1;
for (; a;)
{
int e, f, g;
e = 5 << 1 / (c - d);
g = f = 4U / e && 1 & d;
if (~b)
g = -d;
c = g;
d = 2;
}
}
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