<html>
<head>
<base href="https://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 --- - Compiler no longer generating debug info for inlined templated member function at -O2"
href="https://llvm.org/bugs/show_bug.cgi?id=27975">27975</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Compiler no longer generating debug info for inlined templated member function at -O2
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</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>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>douglas_yung@playstation.sony.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The compiler used to generate debug info for inlined templated member functions
when optimizations are enabled (-O2 or higher). However, with upstream change
r265876, the compiler no longer seems to generate this information and I
suspect it may be a bug introduced with that change.
To reproduce the bug, compile the following code with -O2 -g, and then examine
the dwarf output that is generated:
/**************/
int global_val = 0;
class Type1
{
public:
void inlined() { global_val++; }
template<int T> void templated() { global_val++; }
};
class Type2
{
public:
void outofline();
template<int T> void templated() { global_val++; }
};
void Type2::outofline() { global_val++; }
int main()
{
Type1 t1;
t1.inlined();
t1.templated<0>();
Type2 t2;
t2.outofline();
t2.templated<0>();
return 0 == global_val;
}
/**************/
If the above code is compiled without optimizations (-O0 -g), you will find a
DW_TAG_subprogram block for templated<0> for both Type1 and Type2. If you
enable optimizations (-O2 -g for example), the debug info for templated<0> from
Type1 is no longer generated.
This issue exists with the current trunk, I am using a compiler built from
r271347 targeting x64 linux.</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>