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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Debug information for type is lost with LTO at -O0"
href="https://llvm.org/bugs/show_bug.cgi?id=28149">28149</a>
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<th>Summary</th>
<td>Debug information for type is lost with LTO at -O0
</td>
</tr>
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<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Common Code Generator Code
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>Wolfgang_Pieb@playstation.sony.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>// After r267296 the following simple example fails to retain debug
// information for the type 'MyStruct' in the final executable when
// built with LTO. Building with -O2 behaves as expected.
// To build (on native Linux):
// clang -std=c++11 -O0 -g -flto -c test.cpp
// clang -flto -o test test.o
// 'llvm-dwarfdump test' shows no information for 'MyStruct'
__attribute__((noinline)) void use(int, int) { }
struct MyStruct {
int w;
int x;
int y;
int z;
int foo();
int bar();
};
int MyStruct::foo() {
return 3;
}
int main() {
MyStruct str{1, 2, 3, 4};
use(str.x, str.y);
return 0;
}</pre>
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