<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang crashes on valid code at -O1 and above on x86_64-linux-gnu: Assertion `Value > 0 && "Value must not be 0"' failed"
href="https://bugs.llvm.org/show_bug.cgi?id=52113">52113</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang crashes on valid code at -O1 and above on x86_64-linux-gnu: Assertion `Value > 0 && "Value must not be 0"' failed
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>zhendong.su@inf.ethz.ch
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>[509] % clangtk -v
clang version 14.0.0 (<a href="https://github.com/llvm/llvm-project.git">https://github.com/llvm/llvm-project.git</a>
4c98070cce2a4cfd769be47c316e44a254ffacf7)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /local/suz-local/opfuzz/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
[510] %
[510] % clangtk -O0 small.c; ./a.out
[511] %
[511] % clangtk -O1 small.c
clang-14:
/local/suz-local/software/clangbuild/llvm-project/llvm/include/llvm/Support/Alignment.h:77:
llvm::Align::Align(uint64_t): Assertion `Value > 0 && "Value must not be 0"'
failed.
PLEASE submit a bug report to <a href="https://bugs.llvm.org/">https://bugs.llvm.org/</a> and include the crash
backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments:
/local/suz-local/software/local/clang-trunk/bin/clang-14 -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj --mrelax-relocations -disable-free
-main-file-name small.c -mrelocation-model static -mframe-pointer=none
-fmath-errno -fno-rounding-math -mconstructor-aliases -funwind-tables=2
-target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb
-fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/20211008-clangtk-m64-O1-build-124549/delta
-resource-dir /local/suz-local/software/local/clang-trunk/lib/clang/14.0.0 -I
/usr/local/include/csmith -I /local/suz-local/software/local/include
-internal-isystem
/local/suz-local/software/local/clang-trunk/lib/clang/14.0.0/include
-internal-isystem /usr/local/include -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../x86_64-linux-gnu/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O1
-fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/20211008-clangtk-m64-O1-build-124549/delta
-ferror-limit 19 -fgnuc-version=4.2.1 -fcolor-diagnostics -faddrsig
-D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-8dfdd8.o -x c small.c
1. <eof> parser at end of file
2. Optimizer
#0 0x00005602417d42bf PrintStackTraceSignalHandler(void*) Signals.cpp:0:0
#1 0x00005602417d1a6d SignalHandler(int) Signals.cpp:0:0
#2 0x00007f76d7535980 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12980)
#3 0x00007f76d61e6fb7 raise
/build/glibc-S9d2JN/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
#4 0x00007f76d61e8921 abort /build/glibc-S9d2JN/glibc-2.27/stdlib/abort.c:81:0
#5 0x00007f76d61d848a __assert_fail_base
/build/glibc-S9d2JN/glibc-2.27/assert/assert.c:89:0
#6 0x00007f76d61d8502 (/lib/x86_64-linux-gnu/libc.so.6+0x30502)
#7 0x000056024153b7d9 (anonymous
namespace)::LoopPromoter::doExtraRewritesBeforeFinalDeletion() LICM.cpp:0:0
#8 0x000056024192f8be
llvm::LoadAndStorePromoter::run(llvm::SmallVectorImpl<llvm::Instruction*>
const&) (/local/suz-local/software/local/clang-trunk/bin/clang-14+0x3c098be)
#9 0x000056024153972c
llvm::promoteLoopAccessesToScalars(llvm::SmallSetVector<llvm::Value*, 8u>
const&, llvm::SmallVectorImpl<llvm::BasicBlock*>&,
llvm::SmallVectorImpl<llvm::Instruction*>&,
llvm::SmallVectorImpl<llvm::MemoryAccess*>&, llvm::PredIteratorCache&,
llvm::LoopInfo*, llvm::DominatorTree*, llvm::TargetLibraryInfo const*,
llvm::Loop*, llvm::MemorySSAUpdater*, llvm::ICFLoopSafetyInfo*,
llvm::OptimizationRemarkEmitter*)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x381372c)
#10 0x0000560241544b3e (anonymous
namespace)::LoopInvariantCodeMotion::runOnLoop(llvm::Loop*, llvm::AAResults*,
llvm::LoopInfo*, llvm::DominatorTree*, llvm::BlockFrequencyInfo*,
llvm::TargetLibraryInfo*, llvm::TargetTransformInfo*, llvm::ScalarEvolution*,
llvm::MemorySSA*, llvm::OptimizationRemarkEmitter*, bool) (.part.826)
LICM.cpp:0:0
#11 0x0000560241545b91 llvm::LICMPass::run(llvm::Loop&,
llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&,
llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x381fb91)
#12 0x00005602429e6f51 llvm::detail::PassModel<llvm::Loop, llvm::LICMPass,
llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Loop,
llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&,
llvm::LPMUpdater&>::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop,
llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&,
llvm::LPMUpdater&)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x4cc0f51)
#13 0x00005602445b5467 llvm::FunctionToLoopPassAdaptor::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x688f467)
#14 0x000056024288a371 llvm::detail::PassModel<llvm::Function,
llvm::FunctionToLoopPassAdaptor, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::Function> >::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x4b64371)
#15 0x0000560240f7df5c llvm::PassManager<llvm::Function,
llvm::AnalysisManager<llvm::Function> >::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x3257f5c)
#16 0x000056023f500941 llvm::detail::PassModel<llvm::Function,
llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function> >,
llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Function>
<span class="quote">>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&)</span >
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x17da941)
#17 0x0000560240f7d844 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x3257844)
#18 0x000056023f501211 llvm::detail::PassModel<llvm::Module,
llvm::ModuleToFunctionPassAdaptor, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x17db211)
#19 0x0000560240f7bf8d llvm::PassManager<llvm::Module,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x3255f8d)
#20 0x0000560241ad7c36 (anonymous
namespace)::EmitAssemblyHelper::EmitAssemblyWithNewPassManager(clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >) BackendUtil.cpp:0:0
#21 0x0000560241adc5a3 clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::HeaderSearchOptions const&, clang::CodeGenOptions const&,
clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef,
llvm::Module*, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x3db65a3)
#22 0x000056024280d674
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x4ae7674)
#23 0x00005602436b9f99 clang::ParseAST(clang::Sema&, bool, bool)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x5993f99)
#24 0x000056024280c1f8 clang::CodeGenAction::ExecuteAction()
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x4ae61f8)
#25 0x000056024213f221 clang::FrontendAction::Execute()
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x4419221)
#26 0x00005602420db8ea
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x43b58ea)
#27 0x000056024220db83
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x44e7b83)
#28 0x000056023f25d62c cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/local/suz-local/software/local/clang-trunk/bin/clang-14+0x153762c)
#29 0x000056023f258a29 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
driver.cpp:0:0
#30 0x000056023f181ec1 main
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x145bec1)
#31 0x00007f76d61c9bf7 __libc_start_main
/build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:344:0
#32 0x000056023f25859a _start
(/local/suz-local/software/local/clang-trunk/bin/clang-14+0x153259a)
clang-14: error: unable to execute command: Aborted
clang-14: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 14.0.0 (<a href="https://github.com/llvm/llvm-project.git">https://github.com/llvm/llvm-project.git</a>
4c98070cce2a4cfd769be47c316e44a254ffacf7)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /local/suz-local/opfuzz/bin
clang-14: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-14: note: diagnostic msg: /tmp/small-f32e6a.c
clang-14: note: diagnostic msg: /tmp/small-f32e6a.sh
clang-14: note: diagnostic msg:
********************
[512] %
[512] % cat small.c
int a, *b = &a;
static int **c = &b;
int main() {
int ***e[2] = {&c, &c};
while (a) {
*c = 0;
if (!b)
**c = 0;
}
return 0;
}</pre>
</div>
</p>
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