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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 - compiler crash when using defaulted spaceship operator and -fcoverage-mapping"
href="https://bugs.llvm.org/show_bug.cgi?id=46136">46136</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>compiler crash when using defaulted spaceship operator and -fcoverage-mapping
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>10.0
</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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>LLVM Codegen
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>adi@thingdust.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>I hit the bug in clang 10.0, but it happens on trunk as well:
Godbolt: <a href="https://godbolt.org/z/_ueoTg">https://godbolt.org/z/_ueoTg</a>
-std=c++20 -stdlib=libc++ -fprofile-instr-generate -fcoverage-mapping
#include <compare>
#include <string>
struct MyStruct{
friend bool operator==(MyStruct const& lhs, MyStruct const& rhs) = default;
friend std::strong_ordering operator<=>(MyStruct const& lhs, MyStruct
const& rhs) = default;
std::string value;
};
void foo(MyStruct bar){
(void)(bar <= bar);
}
fatal error: error in backend: File exit not handled before popRegions
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: /opt/compiler-explorer/clang-trunk/bin/clang++ -g -o
./output.s -mllvm --x86-asm-syntax=intel -S
--gcc-toolchain=/opt/compiler-explorer/gcc-9.2.0 -fcolor-diagnostics
-fno-crash-diagnostics -std=c++20 -stdlib=libc++ -Werror
-Wno-zero-as-null-pointer-constant -fprofile-instr-generate -fcoverage-mapping
<source>
1. <eof> parser at end of file
2. Per-file LLVM IR generation
3. <source>:6:33: Generating code for declaration 'operator<=>'
#0 0x000055b3b40fc63a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2bea63a)
#1 0x000055b3b40fa404 llvm::sys::RunSignalHandlers()
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2be8404)
#2 0x000055b3b40fa675 llvm::sys::CleanupOnSignal(unsigned long)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2be8675)
#3 0x000055b3b4072662 llvm::CrashRecoveryContext::HandleExit(int)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2b60662)
#4 0x000055b3b40f35c7 llvm::sys::Process::Exit(int)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2be15c7)
#5 0x000055b3b2348441 LLVMErrorHandler(void*, std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, bool)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0xe36441)
#6 0x000055b3b4078ed1 llvm::report_fatal_error(llvm::Twine const&, bool)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2b66ed1)
#7 0x000055b3b4079018
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2b67018)
#8 0x000055b3b448ef9b (anonymous
namespace)::CounterCoverageMappingBuilder::popRegions(unsigned long)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f7cf9b)
#9 0x000055b3b4494a59 (anonymous
namespace)::CounterCoverageMappingBuilder::propagateCounts(llvm::coverage::Counter,
clang::Stmt const*, bool) (.constprop.507)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f82a59)
#10 0x000055b3b4492d9c (anonymous
namespace)::CounterCoverageMappingBuilder::VisitAbstractConditionalOperator(clang::AbstractConditionalOperator
const*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f80d9c)
#11 0x000055b3b4492f23 clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous
namespace)::CounterCoverageMappingBuilder, void>::Visit(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f80f23)
#12 0x000055b3b4494592 (anonymous
namespace)::CounterCoverageMappingBuilder::VisitStmt(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f82592)
#13 0x000055b3b4492ebe clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous
namespace)::CounterCoverageMappingBuilder, void>::Visit(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f80ebe)
#14 0x000055b3b4494592 (anonymous
namespace)::CounterCoverageMappingBuilder::VisitStmt(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f82592)
#15 0x000055b3b4492ebe clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous
namespace)::CounterCoverageMappingBuilder, void>::Visit(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f80ebe)
#16 0x000055b3b4494592 (anonymous
namespace)::CounterCoverageMappingBuilder::VisitStmt(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f82592)
#17 0x000055b3b4492ebe clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous
namespace)::CounterCoverageMappingBuilder, void>::Visit(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f80ebe)
#18 0x000055b3b4494592 (anonymous
namespace)::CounterCoverageMappingBuilder::VisitStmt(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f82592)
#19 0x000055b3b4492ebe clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous
namespace)::CounterCoverageMappingBuilder, void>::Visit(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f80ebe)
#20 0x000055b3b4492f79 clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous
namespace)::CounterCoverageMappingBuilder, void>::Visit(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f80f79)
#21 0x000055b3b4494592 (anonymous
namespace)::CounterCoverageMappingBuilder::VisitStmt(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f82592)
#22 0x000055b3b4492ebe clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous
namespace)::CounterCoverageMappingBuilder, void>::Visit(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f80ebe)
#23 0x000055b3b44982fd
clang::CodeGen::CoverageMappingGen::emitCounterMapping(clang::Decl const*,
llvm::raw_ostream&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f862fd)
#24 0x000055b3b445c041
clang::CodeGen::CodeGenPGO::emitCounterRegionMapping(clang::Decl const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f4a041)
#25 0x000055b3b447da7b
clang::CodeGen::CodeGenPGO::assignRegionCounters(clang::GlobalDecl,
llvm::Function*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f6ba7b)
#26 0x000055b3b4412a39
clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl,
llvm::Function*, clang::CodeGen::CGFunctionInfo const&)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f00a39)
#27 0x000055b3b445327a
clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f4127a)
#28 0x000055b3b44511c5
clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f3f1c5)
#29 0x000055b3b4457379 clang::CodeGen::CodeGenModule::EmitDeferred()
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f45379)
#30 0x000055b3b445745c clang::CodeGen::CodeGenModule::Release()
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2f4545c)
#31 0x000055b3b4eaf207 (anonymous
namespace)::CodeGeneratorImpl::HandleTranslationUnit(clang::ASTContext&)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x399d207)
#32 0x000055b3b4eaddfd
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x399bdfd)
#33 0x000055b3b5bed509 clang::ParseAST(clang::Sema&, bool, bool)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x46db509)
#34 0x000055b3b48debb9 clang::FrontendAction::Execute()
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x33ccbb9)
#35 0x000055b3b4899d83
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x3387d83)
#36 0x000055b3b49a36eb
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x34916eb)
#37 0x000055b3b23498fc cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0xe378fc)
#38 0x000055b3b234652d ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0xe3452d)
#39 0x000055b3b4774925 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)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x3262925)
#40 0x000055b3b40724f3
llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x2b604f3)
#41 0x000055b3b4775590
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.151)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x3263590)
#42 0x000055b3b474fea5
clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&,
clang::driver::Command const*&) const
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x323dea5)
#43 0x000055b3b47508ef
clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&,
llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) const
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x323e8ef)
#44 0x000055b3b47593f5
clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&,
llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&)
(/opt/compiler-explorer/clang-trunk/bin/clang+++0x32473f5)
#45 0x000055b3b22895f0 main
(/opt/compiler-explorer/clang-trunk/bin/clang+++0xd775f0)
#46 0x00007fa28e700b97 __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21b97)
#47 0x000055b3b23460aa _start
(/opt/compiler-explorer/clang-trunk/bin/clang+++0xe340aa)
clang-11: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
Compiler returned: 70</pre>
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