<html>
<head>
<base href="http://llvm.org/bugs/" />
</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 --- - Assertion with std::atomic<X> where X is a class type."
href="http://llvm.org/bugs/show_bug.cgi?id=19490">19490</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion with std::atomic<X> where X is a class type.
</td>
</tr>
<tr>
<th>Product</th>
<td>compiler-rt
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</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>compiler-rt
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>roman@binarylife.net
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>$ cat test.cc
#include <atomic>
struct X {
int i = 0, j = 0;
};
int main() {
return std::atomic<X>().load().i;
}
$ clang++ -std=c++11 test.cc
clang: /home/heap/llvm/tools/clang/lib/CodeGen/CGValue.h:54: llvm::Value
*clang::CodeGen::RValue::getScalarVal() const: Assertion `isScalar() && "Not a
scalar!"' failed.
0 clang 0x0000000003b89f6e llvm::sys::PrintStackTrace(_IO_FILE*) +
46
1 clang 0x0000000003b8a24b
2 clang 0x0000000003b8b60e
3 libpthread.so.0 0x00007f8e70898340
4 libc.so.6 0x00007f8e6f8abf79 gsignal + 57
5 libc.so.6 0x00007f8e6f8af388 abort + 328
6 libc.so.6 0x00007f8e6f8a4e36
7 libc.so.6 0x00007f8e6f8a4ee2
8 clang 0x0000000000d12aea
9 clang 0x0000000000edbffb
10 clang 0x0000000000ed7c88
11 clang 0x0000000000ecc358
12 clang 0x0000000000ecc275
clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) + 181
13 clang 0x0000000000e8fa77
clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*,
clang::CodeGen::AggValueSlot, bool) + 167
14 clang 0x0000000000e8f96d
clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(clang::Expr const*) + 109
15 clang 0x0000000000d09c59
clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) + 441
16 clang 0x0000000000d10b6b
clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt
const&, bool, clang::CodeGen::AggValueSlot) + 139
17 clang 0x0000000000d329c7
clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::CodeGen::FunctionArgList&,
clang::Stmt const*) + 167
18 clang 0x0000000000d3319d
clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl,
llvm::Function*, clang::CodeGen::CGFunctionInfo const&) + 1709
19 clang 0x0000000000d4a47b
clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl,
llvm::GlobalValue*) + 987
20 clang 0x0000000000d47082
clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl,
llvm::GlobalValue*) + 418
21 clang 0x0000000000d426f8
clang::CodeGen::CodeGenModule::EmitDeferred() + 376
22 clang 0x0000000000d421bc clang::CodeGen::CodeGenModule::Release()
+ 28
23 clang 0x0000000000cac0a1
24 clang 0x0000000000ca9fb2
25 clang 0x0000000000f81b4c clang::ParseAST(clang::Sema&, bool, bool)
+ 796
26 clang 0x00000000009a6179 clang::ASTFrontendAction::ExecuteAction()
+ 345
27 clang 0x0000000000ca9742 clang::CodeGenAction::ExecuteAction() +
1474
28 clang 0x00000000009a5998 clang::FrontendAction::Execute() + 120
29 clang 0x000000000096c28d
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 797
30 clang 0x000000000092aaf3
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1043
31 clang 0x000000000091649a cc1_main(char const**, char const**, char
const*, void*) + 698
32 clang 0x0000000000923cd7 main + 759
33 libc.so.6 0x00007f8e6f896ec5 __libc_start_main + 245
34 clang 0x0000000000915979
Stack dump:
0. Program arguments: /home/heap/local/bin/clang -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -main-file-name
test.cc -mrelocation-model static -mdisable-fp-elim -fmath-errno -masm-verbose
-mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64
-target-linker-version 2.23.2 -resource-dir
/home/heap/local/bin/../lib/clang/3.5.0 -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8 -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/x86_64-linux-gnu
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/backward
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/x86_64-linux-gnu/c++/4.8
-internal-isystem /usr/local/include -internal-isystem
/home/heap/local/bin/../lib/clang/3.5.0/include -internal-externc-isystem
/usr/include/x86_64-linux-gnu -internal-externc-isystem /include
-internal-externc-isystem /usr/include -std=c++11 -fdeprecated-macro
-fdebug-compilation-dir /home/heap/tmp -ferror-limit 19 -fmessage-length 212
-mstackrealign -fobjc-runtime=gcc -fcxx-exceptions -fexceptions
-fdiagnostics-show-option -fcolor-diagnostics -vectorize-slp -o
/tmp/test-63e013.o -x c++ test.cc
1. <eof> parser at end of file
2. Per-file LLVM IR generation
3.
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/atomic:206:7:
Generating code for declaration 'std::atomic<X>::load'
clang: error: unable to execute command: Aborted (core dumped)
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.5.0 (trunk 206678)
Target: x86_64-unknown-linux-gnu
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to
<a href="http://llvm.org/bugs/">http://llvm.org/bugs/</a> and include the crash backtrace, preprocessed source, and
associated run script.
clang: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/test-29ebbc.cpp
clang: note: diagnostic msg: /tmp/test-29ebbc.sh
clang: note: diagnostic msg:
********************</pre>
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