<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 - Cast from _Complex int to _Complex double causes crash"
href="https://bugs.llvm.org/show_bug.cgi?id=44624">44624</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Cast from _Complex int to _Complex double causes crash
</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>LLVM Codegen
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>bevin.hansson@ericsson.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>The code:
_Complex int a;
void fn1() { (_Complex double) a; }
causes a crash in Clang. This can be reproduced all the way to Clang 3.0.
Godbolt: <a href="https://godbolt.org/z/rajvzs">https://godbolt.org/z/rajvzs</a>
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 <source>
1. <eof> parser at end of file
2. <source>:2:6: LLVM IR generation of declaration 'fn1'
3. <source>:2:6: Generating code for declaration 'fn1'
#0 0x00005638efe2ef1a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2883f1a)
#1 0x00005638efe2caf4 llvm::sys::RunSignalHandlers()
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2881af4)
#2 0x00005638efe2cd65 llvm::sys::CleanupOnSignal(unsigned long)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2881d65)
#3 0x00005638efda9cc4 (anonymous
namespace)::CrashRecoveryContextImpl::HandleCrash(int, unsigned long)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x27fecc4)
#4 0x00005638efdaa1e4 CrashRecoverySignalHandler(int)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x27ff1e4)
#5 0x00007f47d942b890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
#6 0x00005638f0325818 (anonymous
namespace)::ScalarExprEmitter::EmitScalarConversion(llvm::Value*,
clang::QualType, clang::QualType, clang::SourceLocation, (anonymous
namespace)::ScalarExprEmitter::ScalarConversionOpts)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2d7a818)
#7 0x00005638f0327a36
clang::CodeGen::CodeGenFunction::EmitScalarConversion(llvm::Value*,
clang::QualType, clang::QualType, clang::SourceLocation)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2d7ca36)
#8 0x00005638f031b9da (anonymous
namespace)::ComplexExprEmitter::EmitCast(clang::CastKind, clang::Expr*,
clang::QualType) (/opt/compiler-explorer/clang-trunk/bin/clang+0x2d709da)
#9 0x00005638f0319f4c (anonymous
namespace)::ComplexExprEmitter::Visit(clang::Expr*)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2d6ef4c)
#10 0x00005638f031b544
clang::CodeGen::CodeGenFunction::EmitComplexExpr(clang::Expr const*, bool,
bool) (/opt/compiler-explorer/clang-trunk/bin/clang+0x2d70544)
#11 0x00005638f02df831 clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr
const*, clang::CodeGen::AggValueSlot, bool)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2d34831)
#12 0x00005638f02f147e
clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(clang::Expr const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2d4647e)
#13 0x00005638f00a7de3 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt
const*, llvm::ArrayRef<clang::Attr const*>)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2afcde3)
#14 0x00005638f00a841c
clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt
const&, bool, clang::CodeGen::AggValueSlot)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2afd41c)
#15 0x00005638f00e8101
clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::Stmt const*)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2b3d101)
#16 0x00005638f00f141e
clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl,
llvm::Function*, clang::CodeGen::CGFunctionInfo const&)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2b4641e)
#17 0x00005638f0131261
clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x2b86261)
#18 0x00005638f012ecd5
clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (/opt/compiler-explorer/clang-trunk/bin/clang+0x2b83cd5)
#19 0x00005638f012f3a3
clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2b843a3)
#20 0x00005638f01349f7
clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (.part.4744)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2b899f7)
#21 0x00005638f0b36491 (anonymous
namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x358b491)
#22 0x00005638f0b29ae6
clang::BackendConsumer::HandleTopLevelDecl(clang::DeclGroupRef)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x357eae6)
#23 0x00005638f1547e34 clang::ParseAST(clang::Sema&, bool, bool)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x3f9ce34)
#24 0x00005638f0597f29 clang::FrontendAction::Execute()
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2fecf29)
#25 0x00005638f05576ba
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2fac6ba)
#26 0x00005638f066161b
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x30b661b)
#27 0x00005638ee1f5674 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/opt/compiler-explorer/clang-trunk/bin/clang+0xc4a674)
#28 0x00005638f0439fcb 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+0x2e8efcb)
#29 0x00005638efdaa293
llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x27ff293)
#30 0x00005638f043ac30
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
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2e8fc30)
#31 0x00005638f0415025
clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&,
clang::driver::Command const*&) const
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2e6a025)
#32 0x00005638f0415a81
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+0x2e6aa81)
#33 0x00005638f041e4e5
clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&,
llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&)
(/opt/compiler-explorer/clang-trunk/bin/clang+0x2e734e5)
#34 0x00005638ee156884 main
(/opt/compiler-explorer/clang-trunk/bin/clang+0xbab884)
#35 0x00007f47d82e9b97 __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21b97)
#36 0x00005638ee1f2a0a _start
(/opt/compiler-explorer/clang-trunk/bin/clang+0xc47a0a)
clang-11: error: clang frontend command failed due to signal (use -v to see
invocation)
Compiler returned: 254</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>