<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: llvm::Function::getArg(unsigned int) const: Assertion `i < NumArgs && "getArg() out of range!"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=50880">50880</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>ICE: llvm::Function::getArg(unsigned int) const: Assertion `i < NumArgs && "getArg() out of range!"' 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>Linux
</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>
2e9c75daffddd65e37c3236708b5b133e6f5f2f5)
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
struct Small {
__regcall;
};
__regcall v3(struct Small) {}
$ clang-trunk mutant.c
mutant.c:2:3: warning: declaration does not declare anything
[-Wmissing-declarations]
__regcall;
^
mutant.c:4:11: warning: type specifier missing, defaults to 'int'
[-Wimplicit-int]
__regcall v3(struct Small) {}
^
mutant.c:4:26: warning: omitting the parameter name in a function definition is
a C2x extension [-Wc2x-extensions]
__regcall v3(struct Small) {}
^
mutant.c:4:29: warning: non-void function does not return a value
[-Wreturn-type]
__regcall v3(struct Small) {}
^
clang-13:
/tmp/tmp.xjN6dMkdrg-clang-builder/llvm-project/llvm/include/llvm/IR/Function.h:812:
llvm::Argument* llvm::Function::getArg(unsigned int) const: Assertion `i <
NumArgs && "getArg() out of range!"' 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_195014_05cc/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_195014_05cc/delta/perses_result
-ferror-limit 19 -fgnuc-version=4.2.1 -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1
-o /tmp/mutant-82e2c3.o -x c mutant.c
1. <eof> parser at end of file
2. mutant.c:4:11: LLVM IR generation of declaration 'v3'
3. mutant.c:4:11: Generating code for declaration 'v3'
#0 0x00005561147bd184 PrintStackTraceSignalHandler(void*) Signals.cpp:0:0
#1 0x00005561147ba93e SignalHandler(int) Signals.cpp:0:0
#2 0x00007fa7ff0163c0 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0)
#3 0x00007fa7feab518b raise
/build/glibc-ZN95T4/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1
#4 0x00007fa7fea94859 abort /build/glibc-ZN95T4/glibc-2.31/stdlib/abort.c:81:7
#5 0x00007fa7fea94729 get_sysdep_segment_value
/build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:509:8
#6 0x00007fa7fea94729 _nl_load_domain
/build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:970:34
#7 0x00007fa7feaa5f36 (/lib/x86_64-linux-gnu/libc.so.6+0x36f36)
#8 0x0000556114deafa5
clang::CodeGen::CodeGenFunction::EmitFunctionProlog(clang::CodeGen::CGFunctionInfo
const&, llvm::Function*, clang::CodeGen::FunctionArgList const&)
(/scratch/software/clang-trunk/bin/clang-13+0x3f88fa5)
#9 0x0000556114bb6b9a
clang::CodeGen::CodeGenFunction::StartFunction(clang::GlobalDecl,
clang::QualType, llvm::Function*, clang::CodeGen::CGFunctionInfo const&,
clang::CodeGen::FunctionArgList const&, clang::SourceLocation,
clang::SourceLocation) (/scratch/software/clang-trunk/bin/clang-13+0x3d54b9a)
#10 0x0000556114bbbb8f
clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl,
llvm::Function*, clang::CodeGen::CGFunctionInfo const&)
(/scratch/software/clang-trunk/bin/clang-13+0x3d59b8f)
#11 0x0000556114c153f6
clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (/scratch/software/clang-trunk/bin/clang-13+0x3db33f6)
#12 0x0000556114c10f45
clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (/scratch/software/clang-trunk/bin/clang-13+0x3daef45)
#13 0x0000556114c113ab
clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl)
(/scratch/software/clang-trunk/bin/clang-13+0x3daf3ab)
#14 0x0000556114c19e62
clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (.part.0)
CodeGenModule.cpp:0:0
#15 0x000055611591c7e9 (anonymous
namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef)
ModuleBuilder.cpp:0:0
#16 0x000055611590e9d0
clang::BackendConsumer::HandleTopLevelDecl(clang::DeclGroupRef)
(/scratch/software/clang-trunk/bin/clang-13+0x4aac9d0)
#17 0x00005561169d22b4 clang::ParseAST(clang::Sema&, bool, bool)
(/scratch/software/clang-trunk/bin/clang-13+0x5b702b4)
#18 0x0000556115919968 clang::CodeGenAction::ExecuteAction()
(/scratch/software/clang-trunk/bin/clang-13+0x4ab7968)
#19 0x00005561151c9599 clang::FrontendAction::Execute()
(/scratch/software/clang-trunk/bin/clang-13+0x4367599)
#20 0x000055611515c7e6
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/scratch/software/clang-trunk/bin/clang-13+0x42fa7e6)
#21 0x00005561152a7480
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/scratch/software/clang-trunk/bin/clang-13+0x4445480)
#22 0x00005561120c7696 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/scratch/software/clang-trunk/bin/clang-13+0x1265696)
#23 0x00005561120c39d8 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
driver.cpp:0:0
#24 0x0000556111ff10e6 main
(/scratch/software/clang-trunk/bin/clang-13+0x118f0e6)
#25 0x00007fa7fea960b3 __libc_start_main
/build/glibc-ZN95T4/glibc-2.31/csu/../csu/libc-start.c:342:3
#26 0x00005561120c354e _start
(/scratch/software/clang-trunk/bin/clang-13+0x126154e)
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>
2e9c75daffddd65e37c3236708b5b133e6f5f2f5)
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-0278bf.c
clang-13: note: diagnostic msg: /tmp/mutant-0278bf.sh
clang-13: note: diagnostic msg:
********************</pre>
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