<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 crash on llvm/include/llvm/Support/Alignment.h:77: llvm::Align::Align(uint64_t): Assertion `Value > 0 && "Value must not be 0"' failed"
href="https://bugs.llvm.org/show_bug.cgi?id=52101">52101</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Clang crash on llvm/include/llvm/Support/Alignment.h:77: llvm::Align::Align(uint64_t): Assertion `Value > 0 && "Value must not be 0"' failed
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>haoxintu@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Hi all.
It appears to be a recent regression issue.
$cat small.c
#include <stdint.h>
int a, b, c;
d() {
int e;
int32_t *f;
if (0)
g:
for (; b;)
for (; c;)
i:;
else goto g;
int8_t *j;
k:
for (; *f; f = e++)
;
if (*j)
for (;;)
;
for (; e;)
goto i;
for (; a;)
j = b;
goto k;
}
$clang -w -O2 small.c
clang-14:
/home/haoxin/haoxin-data/compilers/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:
/home/haoxin/haoxin-data/compilers/llvm-project/build/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=/home/haoxin/haoxin-data/dut-research/covsmith-test/20210819/9
-resource-dir
/home/haoxin/haoxin-data/compilers/llvm-project/build/lib/clang/14.0.0
-internal-isystem
/home/haoxin/haoxin-data/compilers/llvm-project/build/lib/clang/14.0.0/include
-internal-isystem /usr/local/include -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/9/../../../../x86_64-linux-gnu/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O2
-w
-fdebug-compilation-dir=/home/haoxin/haoxin-data/dut-research/covsmith-test/20210819/9
-ferror-limit 19 -fgnuc-version=4.2.1 -fcolor-diagnostics -vectorize-loops
-vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-893f26.o
-x c small.c
1. <eof> parser at end of file
2. Optimizer
#0 0x00005577a88e9954 PrintStackTraceSignalHandler(void*) Signals.cpp:0:0
#1 0x00005577a88e706e SignalHandler(int) Signals.cpp:0:0
#2 0x00007fce5e6c53c0 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0)
#3 0x00007fce5e16418b raise
/build/glibc-eX1tMB/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1
#4 0x00007fce5e143859 abort /build/glibc-eX1tMB/glibc-2.31/stdlib/abort.c:81:7
#5 0x00007fce5e143729 get_sysdep_segment_value
/build/glibc-eX1tMB/glibc-2.31/intl/loadmsgcat.c:509:8
#6 0x00007fce5e143729 _nl_load_domain
/build/glibc-eX1tMB/glibc-2.31/intl/loadmsgcat.c:970:34
#7 0x00007fce5e154f36 (/lib/x86_64-linux-gnu/libc.so.6+0x36f36)
#8 0x00005577a8605a6a (anonymous
namespace)::LoopPromoter::doExtraRewritesBeforeFinalDeletion() LICM.cpp:0:0
#9 0x00005577a8a5e52c
llvm::LoadAndStorePromoter::run(llvm::SmallVectorImpl<llvm::Instruction*>
const&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x3d1f52c)
#10 0x00005577a860296b
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*)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x38c396b)
#11 0x00005577a86106d1 (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.0)
LICM.cpp:0:0
#12 0x00005577a8611c92 llvm::LICMPass::run(llvm::Loop&,
llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&,
llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x38d2c92)
#13 0x00005577a9b51466 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&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x4e12466)
#14 0x00005577ab9d7583 llvm::FunctionToLoopPassAdaptor::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x6c98583)
#15 0x00005577a9b4d236 llvm::detail::PassModel<llvm::Function,
llvm::FunctionToLoopPassAdaptor, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::Function> >::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x4e0e236)
#16 0x00005577a7fc5f96 llvm::PassManager<llvm::Function,
llvm::AnalysisManager<llvm::Function> >::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x3286f96)
#17 0x00005577a6394356 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 >
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x1655356)
#18 0x00005577a769075f
llvm::CGSCCToFunctionPassAdaptor::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x295175f)
#19 0x00005577a63950d6 llvm::detail::PassModel<llvm::LazyCallGraph::SCC,
llvm::CGSCCToFunctionPassAdaptor, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x16560d6)
#20 0x00005577a7687c6b llvm::PassManager<llvm::LazyCallGraph::SCC,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x2948c6b)
#21 0x00005577a80ef5f6 llvm::detail::PassModel<llvm::LazyCallGraph::SCC,
llvm::PassManager<llvm::LazyCallGraph::SCC,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x33b05f6)
#22 0x00005577a768c304
llvm::DevirtSCCRepeatedPass::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x294d304)
#23 0x00005577a80ef5a6 llvm::detail::PassModel<llvm::LazyCallGraph::SCC,
llvm::DevirtSCCRepeatedPass, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x33b05a6)
#24 0x00005577a7689fd3
llvm::ModuleToPostOrderCGSCCPassAdaptor::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x294afd3)
#25 0x00005577a80ef646 llvm::detail::PassModel<llvm::Module,
llvm::ModuleToPostOrderCGSCCPassAdaptor, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x33b0646)
#26 0x00005577a7fc24cf llvm::PassManager<llvm::Module,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x32834cf)
#27 0x00005577a80f256b llvm::ModuleInlinerWrapperPass::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x33b356b)
#28 0x00005577a9b505e6 llvm::detail::PassModel<llvm::Module,
llvm::ModuleInlinerWrapperPass, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x4e115e6)
#29 0x00005577a7fc24cf llvm::PassManager<llvm::Module,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x32834cf)
#30 0x00005577a8c35bee (anonymous
namespace)::EmitAssemblyHelper::EmitAssemblyWithNewPassManager(clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >) BackendUtil.cpp:0:0
#31 0x00005577a8c3ac65 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> >)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x3efbc65)
#32 0x00005577a9ae7a11
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x4da8a11)
#33 0x00005577aa81fad9 clang::ParseAST(clang::Sema&, bool, bool)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x5ae0ad9)
#34 0x00005577a9ae6438 clang::CodeGenAction::ExecuteAction()
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x4da7438)
#35 0x00005577a93639a9 clang::FrontendAction::Execute()
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x46249a9)
#36 0x00005577a92f2e3e
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x45b3e3e)
#37 0x00005577a9442b73
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x4703b73)
#38 0x00005577a60abccd cc1_main(llvm::ArrayRef<char const*>, char const*,
void*)
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x136cccd)
#39 0x00005577a60a80d8 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
driver.cpp:0:0
#40 0x00005577a5fdcc19 main
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x129dc19)
#41 0x00007fce5e1450b3 __libc_start_main
/build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:342:3
#42 0x00005577a60a7c4e _start
(/home/haoxin/haoxin-data/compilers/llvm-project/build/bin/clang-14+0x1368c4e)
clang-14: error: unable to execute command: Aborted (core dumped)
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">https://github.com/llvm/llvm-project</a>
2bb208ddfd700f0fdd3028f83eecd280a8d6f3b5)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/haoxin/haoxin-data/compilers/llvm-project/build/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-9a48bd.c
clang-14: note: diagnostic msg: /tmp/small-9a48bd.sh
clang-14: note: diagnostic msg:
********************
Thanks,
Haoxin</pre>
</div>
</p>
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