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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Location list generated when one location expression (DW_AT_location) would suffice"
href="https://llvm.org/bugs/show_bug.cgi?id=26904">26904</a>
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<th>Summary</th>
<td>Location list generated when one location expression (DW_AT_location) would suffice
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>DebugInfo
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>Wolfgang_Pieb@playstation.sony.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>extern void use(void *, int *);
void foo(void *ptr) {
int arr[100] = {1};
use(ptr, arr);
}
when compiled with clang -O2 -c -g -march=btver2 (on native linux) generates a
one-entry location list for 'ptr' instead of a DW_AT_location entry with a
single location expression. The recent change r262247 seems to have something
to do with it since before this change a DW_AT_location was generated.
Dwarfdump output (excerpt):
< 2><0x0000003f> DW_TAG_formal_parameter
DW_AT_location <loclist with 1 entries
follows>
[ 0]<lowpc=0x00000000><highpc=0x00000090>DW_OP_reg5
DW_AT_name "ptr"
DW_AT_decl_file 0x00000001
/home/test/simple.c
DW_AT_decl_line 0x00000003
DW_AT_type <0x00000077></pre>
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</p>
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