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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ICE on valid code with -O1: llvm::cast(Y*) [with X = llvm::SCEVConstant; Y = const llvm::SCEV; typename llvm::cast_retty<X, Y*>::ret_type = const llvm::SCEVConstant*]: Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=50978">50978</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>ICE on valid code with -O1: llvm::cast(Y*) [with X = llvm::SCEVConstant; Y = const llvm::SCEV; typename llvm::cast_retty<X, Y*>::ret_type = const llvm::SCEVConstant*]: Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</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>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>cnsun@uwaterloo.ca
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>$ clang-trunk -v
clang version 13.0.0 (<a href="https://github.com/llvm/llvm-project.git">https://github.com/llvm/llvm-project.git</a>
6b0d266036f73f5ee9556d211a7d0946091ff3b2)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/cnsun/usr/bin
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$ cat mutant.c
a, b;
*c(int, int) __attribute__((__alloc_align__(2)));
d() {
int e;
double *f = c(a, d);
b = f[e];
}
$ clang-trunk -w -O1 mutant.c
clang-13:
/tmp/tmp.OKn6kNiY8c-clang-builder/llvm-project/llvm/include/llvm/Support/Casting.h:269:
typename llvm::cast_retty<X, Y*>::ret_type llvm::cast(Y*) [with X =
llvm::SCEVConstant; Y = const llvm::SCEV; typename llvm::cast_retty<X,
Y*>::ret_type = const llvm::SCEVConstant*]: Assertion `isa<X>(Val) &&
"cast<Ty>() argument of incompatible type!"' 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: /scratch/software/clang-trunk/bin/clang-13 -cc1
-triple x86_64-unknown-linux-gnu -emit-obj --mrelax-relocations -disable-free
-main-file-name mutant.c -mrelocation-model static -mframe-pointer=none
-fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables
-target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb
-fcoverage-compilation-dir=/scratch/cnsun/workspace/perses-fuzzer/default_c_finding_folder/crash_20210703_070011_023b/delta/perses_result
-resource-dir /scratch/software/clang-trunk/lib/clang/13.0.0 -c-isystem .
-c-isystem /usr/local/include/cmsith -internal-isystem
/scratch/software/clang-trunk/lib/clang/13.0.0/include -internal-isystem
/usr/local/include -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O1
-w
-fdebug-compilation-dir=/scratch/cnsun/workspace/perses-fuzzer/default_c_finding_folder/crash_20210703_070011_023b/delta/perses_result
-ferror-limit 19 -fgnuc-version=4.2.1 -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1
-o /tmp/mutant-c4eb9b.o -x c mutant.c
1. <eof> parser at end of file
2. Optimizer
#0 0x00005608a5de1714 PrintStackTraceSignalHandler(void*) Signals.cpp:0:0
#1 0x00005608a5ddeece SignalHandler(int) Signals.cpp:0:0
#2 0x00007fb1563ac3c0 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0)
#3 0x00007fb155e4b18b raise
/build/glibc-ZN95T4/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1
#4 0x00007fb155e2a859 abort /build/glibc-ZN95T4/glibc-2.31/stdlib/abort.c:81:7
#5 0x00007fb155e2a729 get_sysdep_segment_value
/build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:509:8
#6 0x00007fb155e2a729 _nl_load_domain
/build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:970:34
#7 0x00007fb155e3bf36 (/lib/x86_64-linux-gnu/libc.so.6+0x36f36)
#8 0x00005608a5a3473e getNewAlignmentDiff(llvm::SCEV const*, llvm::SCEV
const*, llvm::ScalarEvolution*) AlignmentFromAssumptions.cpp:0:0
#9 0x00005608a5a34bf2 getNewAlignment(llvm::SCEV const*, llvm::SCEV const*,
llvm::SCEV const*, llvm::Value*, llvm::ScalarEvolution*)
AlignmentFromAssumptions.cpp:0:0
#10 0x00005608a5a35a6e
llvm::AlignmentFromAssumptionsPass::processAssumption(llvm::CallInst*, unsigned
int) (/scratch/software/clang-trunk/bin/clang-13+0x35e9a6e)
#11 0x00005608a5a36f2f
llvm::AlignmentFromAssumptionsPass::runImpl(llvm::Function&,
llvm::AssumptionCache&, llvm::ScalarEvolution*, llvm::DominatorTree*)
(/scratch/software/clang-trunk/bin/clang-13+0x35eaf2f)
#12 0x00005608a5a370e8 llvm::AlignmentFromAssumptionsPass::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/scratch/software/clang-trunk/bin/clang-13+0x35eb0e8)
#13 0x00005608a71178d6 llvm::detail::PassModel<llvm::Function,
llvm::AlignmentFromAssumptionsPass, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::Function> >::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/scratch/software/clang-trunk/bin/clang-13+0x4ccb8d6)
#14 0x00005608a5517d26 llvm::PassManager<llvm::Function,
llvm::AnalysisManager<llvm::Function> >::run(llvm::Function&,
llvm::AnalysisManager<llvm::Function>&)
(/scratch/software/clang-trunk/bin/clang-13+0x30cbd26)
#15 0x00005608a398f666 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 >
(/scratch/software/clang-trunk/bin/clang-13+0x1543666)
#16 0x00005608a5516849 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/scratch/software/clang-trunk/bin/clang-13+0x30ca849)
#17 0x00005608a398fed6 llvm::detail::PassModel<llvm::Module,
llvm::ModuleToFunctionPassAdaptor, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/scratch/software/clang-trunk/bin/clang-13+0x1543ed6)
#18 0x00005608a551412f llvm::PassManager<llvm::Module,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/scratch/software/clang-trunk/bin/clang-13+0x30c812f)
#19 0x00005608a61189fd (anonymous
namespace)::EmitAssemblyHelper::EmitAssemblyWithNewPassManager(clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >) BackendUtil.cpp:0:0
#20 0x00005608a611bc7d 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> >)
(/scratch/software/clang-trunk/bin/clang-13+0x3ccfc7d)
#21 0x00005608a6f5275f
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/scratch/software/clang-trunk/bin/clang-13+0x4b0675f)
#22 0x00005608a800a419 clang::ParseAST(clang::Sema&, bool, bool)
(/scratch/software/clang-trunk/bin/clang-13+0x5bbe419)
#23 0x00005608a6f512a8 clang::CodeGenAction::ExecuteAction()
(/scratch/software/clang-trunk/bin/clang-13+0x4b052a8)
#24 0x00005608a67f4399 clang::FrontendAction::Execute()
(/scratch/software/clang-trunk/bin/clang-13+0x43a8399)
#25 0x00005608a67873b6
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/scratch/software/clang-trunk/bin/clang-13+0x433b3b6)
#26 0x00005608a68d20c0
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/scratch/software/clang-trunk/bin/clang-13+0x44860c0)
#27 0x00005608a36c4846 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/scratch/software/clang-trunk/bin/clang-13+0x1278846)
#28 0x00005608a36c0b88 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
driver.cpp:0:0
#29 0x00005608a35ee156 main
(/scratch/software/clang-trunk/bin/clang-13+0x11a2156)
#30 0x00007fb155e2c0b3 __libc_start_main
/build/glibc-ZN95T4/glibc-2.31/csu/../csu/libc-start.c:342:3
#31 0x00005608a36c06fe _start
(/scratch/software/clang-trunk/bin/clang-13+0x12746fe)
clang-13: error: unable to execute command: Aborted (core dumped)
clang-13: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 13.0.0 (<a href="https://github.com/llvm/llvm-project.git">https://github.com/llvm/llvm-project.git</a>
6b0d266036f73f5ee9556d211a7d0946091ff3b2)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/cnsun/usr/bin
clang-13: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-13: note: diagnostic msg: /tmp/mutant-fc9c62.c
clang-13: note: diagnostic msg: /tmp/mutant-fc9c62.sh
clang-13: note: diagnostic msg:
********************</pre>
</div>
</p>
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