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<head>
<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 - Fatal error for 32-bit pointer address space"
href="https://bugs.llvm.org/show_bug.cgi?id=52294">52294</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Fatal error for 32-bit pointer address space
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>12.0
</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>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>akhuang@google.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ararmine2@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, pengfei.wang@intel.com, spatel+llvm@rotateright.com
</td>
</tr></table>
<p>
<div>
<pre>LLVM crashes in back-end for the following code using __ptr32 attribute:
extern "C" {
int printf(const char *, ...);
}
struct {short string_length; char string_text[128];} * __ptr32 a_comment;
int main()
{
printf ("%s\n",a_comment->string_text);
}
run test with the following command:
clang test.cpp -S -target x86_64-windows-msvc -fms-extensions
Here is the crash:
fatal error: error in backend: Cannot emit physreg copy instruction
Stack dump:
0. Program arguments: clang test.cpp -S -target x86_64-windows-msvc
-fms-extensions
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'test.cpp'.
4. Running pass 'Post-RA pseudo instruction expansion pass' on function
'@"?commout@@YAXXZ"'
#0 0x000055ef10000c8e llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x1958c8e)
#1 0x000055ef0fffe9d4 llvm::sys::RunSignalHandlers()
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x19569d4)
#2 0x000055ef0fffec51 llvm::sys::CleanupOnSignal(unsigned long)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x1956c51)
#3 0x000055ef0ff7a548 llvm::CrashRecoveryContext::HandleExit(int)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x18d2548)
#4 0x000055ef0fff789b llvm::sys::Process::Exit(int)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x194f89b)
#5 0x000055ef0eff2d87 LLVMErrorHandler(void*, std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, bool)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x94ad87)
#6 0x000055ef0ff80dbb llvm::report_fatal_error(llvm::Twine const&, bool)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x18d8dbb)
#7 0x000055ef0ff80f06
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x18d8f06)
#8 0x000055ef0f1ce47d
llvm::X86InstrInfo::copyPhysReg(llvm::MachineBasicBlock&,
llvm::MachineInstrBundleIterator<llvm::MachineInstr, false>, llvm::DebugLoc
const&, llvm::MCRegister, llvm::MCRegister, bool) const
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0xb2647d)
#9 0x000055ef0f70e6a6 (anonymous
namespace)::ExpandPostRA::runOnMachineFunction(llvm::MachineFunction&)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x10666a6)
#10 0x000055ef0f5cff1c
llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0xf27f1c)
#11 0x000055ef0f9c6748 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x131e748)
#12 0x000055ef0f9c7d09 llvm::FPPassManager::runOnModule(llvm::Module&)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x131fd09)
#13 0x000055ef0f9c80d0 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x13200d0)
#14 0x000055ef1026117c clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::HeaderSearchOptions const&, clang::CodeGenOptions const&,
clang::TargetOptions const&, clang::LangOptions const&, llvm::DataLayout
const&, llvm::Module*, clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x1bb917c)
#15 0x000055ef10e5d809
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x27b5809)
#16 0x000055ef11a92aa1 clang::ParseAST(clang::Sema&, bool, bool)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x33eaaa1)
#17 0x000055ef10838e49 clang::FrontendAction::Execute()
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x2190e49)
#18 0x000055ef107f072b
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x214872b)
#19 0x000055ef1090f6eb
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x22676eb)
#20 0x000055ef0eff3424 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x94b424)
#21 0x000055ef0eff128a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x94928a)
#22 0x000055ef106ba8c9 void llvm::function_ref<void
()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef>
<span class="quote">>, std::__cxx11::basic_string<char, std::char_traits<char>,</span >
std::allocator<char> >*, bool*) const::'lambda'()>(long)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x20128c9)
#23 0x000055ef0ff7a3c7
llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x18d23c7)
#24 0x000055ef106bb4de
clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef>
<span class="quote">>, std::__cxx11::basic_string<char, std::char_traits<char>,</span >
std::allocator<char> >*, bool*) const (.part.0)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x20134de)
#25 0x000055ef10691efc
clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&,
clang::driver::Command const*&) const
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x1fe9efc)
#26 0x000055ef106927f9
clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&,
llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) const
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x1fea7f9)
#27 0x000055ef1069a57f
clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&,
llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&)
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x1ff257f)
#28 0x000055ef0ef84bfe main
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x8dcbfe)
#29 0x00007f5dd3f290b3 __libc_start_main
/build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:342:3
#30 0x000055ef0eff0e6e _start
(/home/armine/llvm/llvm-10.0.1/llvm-project-10.0.1/release_build/bin/clang-10+0x948e6e)</pre>
</div>
</p>
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