<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 - ICE: Assertion `llvm::isPowerOf2_32(Align) && "Alignment must be power of 2"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=50827">50827</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>ICE: Assertion `llvm::isPowerOf2_32(Align) && "Alignment must be power of 2"' 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>C
</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>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, 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>
5c8659801a4976ef2b327f4071d98086efd42a36)
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
__bf16 v64bf __attribute__((vector_size(128)));
$ clang-trunk mutant.c
mutant.c:1:1: error: __bf16 is not supported on this target
__bf16 v64bf __attribute__((vector_size(128)));
^
clang-13:
/tmp/tmp.FIfHBNID2p-clang-builder/llvm-project/clang/lib/AST/ASTContext.cpp:2394:
clang::TypeInfo clang::ASTContext::getTypeInfoImpl(const clang::Type*) const:
Assertion `llvm::isPowerOf2_32(Align) && "Alignment must be power of 2"'
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-all --mrelax-relocations
-disable-free -main-file-name mutant.c -mrelocation-model static
-mframe-pointer=all -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_20210623_071354_0005/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
-fdebug-compilation-dir=/scratch/cnsun/workspace/perses-fuzzer/default_c_finding_folder/crash_20210623_071354_0005/delta/perses_result
-ferror-limit 19 -fgnuc-version=4.2.1 -fcolor-diagnostics -faddrsig
-D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/mutant-5a2a9f.o -x c mutant.c
1. mutant.c:1:47: current parser token ';'
#0 0x000056271c410c64 PrintStackTraceSignalHandler(void*) Signals.cpp:0:0
#1 0x000056271c40e41e SignalHandler(int) Signals.cpp:0:0
#2 0x00007fd33ce593c0 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0)
#3 0x00007fd33c8f818b raise
/build/glibc-ZN95T4/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1
#4 0x00007fd33c8d7859 abort /build/glibc-ZN95T4/glibc-2.31/stdlib/abort.c:81:7
#5 0x00007fd33c8d7729 get_sysdep_segment_value
/build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:509:8
#6 0x00007fd33c8d7729 _nl_load_domain
/build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:970:34
#7 0x00007fd33c8e8f36 (/lib/x86_64-linux-gnu/libc.so.6+0x36f36)
#8 0x000056271f2949ff clang::ASTContext::getTypeInfoImpl(clang::Type const*)
const (/scratch/software/clang-trunk/bin/clang-13+0x67d29ff)
#9 0x000056271f2852ff clang::ASTContext::getTypeInfo(clang::Type const*) const
(/scratch/software/clang-trunk/bin/clang-13+0x67c32ff)
#10 0x000056271f038629 clang::Sema::BuildVectorType(clang::QualType,
clang::Expr*, clang::SourceLocation)
(/scratch/software/clang-trunk/bin/clang-13+0x6576629)
#11 0x000056271f0387d9 HandleVectorSizeAttr(clang::QualType&, clang::ParsedAttr
const&, clang::Sema&) SemaType.cpp:0:0
#12 0x000056271f03ebd7 processTypeAttrs((anonymous
namespace)::TypeProcessingState&, clang::QualType&, TypeAttrLocation,
clang::ParsedAttributesView&) SemaType.cpp:0:0
#13 0x000056271f04d0db GetFullTypeForDeclarator((anonymous
namespace)::TypeProcessingState&, clang::QualType, clang::TypeSourceInfo*)
SemaType.cpp:0:0
#14 0x000056271f04f52d clang::Sema::GetTypeForDeclarator(clang::Declarator&,
clang::Scope*) (/scratch/software/clang-trunk/bin/clang-13+0x658d52d)
#15 0x000056271e903f76 clang::Sema::HandleDeclarator(clang::Scope*,
clang::Declarator&, llvm::MutableArrayRef<clang::TemplateParameterList*>)
(/scratch/software/clang-trunk/bin/clang-13+0x5e41f76)
#16 0x000056271e9050c9 clang::Sema::ActOnDeclarator(clang::Scope*,
clang::Declarator&) (/scratch/software/clang-trunk/bin/clang-13+0x5e430c9)
#17 0x000056271e648fe0
clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&,
clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*)
(/scratch/software/clang-trunk/bin/clang-13+0x5b86fe0)
#18 0x000056271e65c31b clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&,
clang::DeclaratorContext, clang::SourceLocation*, clang::Parser::ForRangeInit*)
(/scratch/software/clang-trunk/bin/clang-13+0x5b9a31b)
#19 0x000056271e62a426
clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributesWithRange&,
clang::ParsingDeclSpec&, clang::AccessSpecifier)
(/scratch/software/clang-trunk/bin/clang-13+0x5b68426)
#20 0x000056271e62aa11
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*, clang::AccessSpecifier) (.part.0) Parser.cpp:0:0
#21 0x000056271e631217
clang::Parser::ParseExternalDeclaration(clang::ParsedAttributesWithRange&,
clang::ParsingDeclSpec*) (/scratch/software/clang-trunk/bin/clang-13+0x5b6f217)
#22 0x000056271e6327ae
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, bool)
(/scratch/software/clang-trunk/bin/clang-13+0x5b707ae)
#23 0x000056271e632b59
clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&)
(/scratch/software/clang-trunk/bin/clang-13+0x5b70b59)
#24 0x000056271e624fca clang::ParseAST(clang::Sema&, bool, bool)
(/scratch/software/clang-trunk/bin/clang-13+0x5b62fca)
#25 0x000056271d56c678 clang::CodeGenAction::ExecuteAction()
(/scratch/software/clang-trunk/bin/clang-13+0x4aaa678)
#26 0x000056271ce1c029 clang::FrontendAction::Execute()
(/scratch/software/clang-trunk/bin/clang-13+0x435a029)
#27 0x000056271cdaf1e6
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/scratch/software/clang-trunk/bin/clang-13+0x42ed1e6)
#28 0x000056271cef9eb0
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/scratch/software/clang-trunk/bin/clang-13+0x4437eb0)
#29 0x0000562719d226f6 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/scratch/software/clang-trunk/bin/clang-13+0x12606f6)
#30 0x0000562719d1ea38 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
driver.cpp:0:0
#31 0x0000562719c4c0a6 main
(/scratch/software/clang-trunk/bin/clang-13+0x118a0a6)
#32 0x00007fd33c8d90b3 __libc_start_main
/build/glibc-ZN95T4/glibc-2.31/csu/../csu/libc-start.c:342:3
#33 0x0000562719d1e5ae _start
(/scratch/software/clang-trunk/bin/clang-13+0x125c5ae)
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>
5c8659801a4976ef2b327f4071d98086efd42a36)
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-2c9a91.c
clang-13: note: diagnostic msg: /tmp/mutant-2c9a91.sh
clang-13: note: diagnostic msg:
********************</pre>
</div>
</p>
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