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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - DWARF template value parameter of 'reference' type incorrectly has 'pointer' type"
href="http://llvm.org/bugs/show_bug.cgi?id=21246">21246</a>
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<th>Summary</th>
<td>DWARF template value parameter of 'reference' type incorrectly has 'pointer' type
</td>
</tr>
<tr>
<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>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>DebugInfo
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>warren_ristow@playstation.sony.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Compiling the following test-case at '-O0 -g':
extern "C" int printf(const char *, ...);
template <int &v>
int reference()
{
return v;
}
int a = 42;
int main()
{
int x;
x = reference<a>();
printf("x = %d\n", x);
return 0;
}
produces an incorrect description of 'v'. It is described as a pointer to an
int, rather than a reference to an int. An edited/trimmed version of the
output of llvm-dwarfdump is:
___________________________________________________
0x0000000b: DW_TAG_compile_unit [1] *
DW_AT_producer [DW_FORM_strp]
( .debug_str[0x00000000] = "clang version 3.6.0 (trunk
219524)")
...
0x0000006e: DW_TAG_subprogram [6] *
...
DW_AT_name [DW_FORM_strp]
( .debug_str[0x0000006b] = "reference<&a>")
...
0x0000008b: DW_TAG_template_value_parameter [7]
DW_AT_type [DW_FORM_ref4] (cu + 0x00a0 => {0x000000a0})
DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000053] = "v")
...
0x000000a0: DW_TAG_pointer_type [8]
DW_AT_type [DW_FORM_ref4] (cu + 0x003f => {0x0000003f})
___________________________________________________
The problem was found on an x86_64 target, 'clang --version':
clang version 3.6.0 (trunk 219524)
Target: x86_64-unknown-linux-gnu
Thread model: posix
but also tested with '-target ppu', and it had the same behavior.</pre>
</div>
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