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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - --wrap doesn't work with lto"
href="https://bugs.llvm.org/show_bug.cgi?id=33145">33145</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>--wrap doesn't work with lto
</td>
</tr>
<tr>
<th>Product</th>
<td>lld
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>ELF
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rafael.espindola@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=18498" name="attach_18498" title="testcase">attachment 18498</a> <a href="attachment.cgi?id=18498&action=edit" title="testcase">[details]</a></span>
testcase
In the included testcase we have
void foo() {
bar();
__real_bar();
}
When linking without lto, we get
0000000000001000 <foo>:
1000: 50 push %rax
1001: 31 c0 xor %eax,%eax
1003: e8 28 00 00 00 callq 1030 <__wrap_bar@plt>
1008: 31 c0 xor %eax,%eax
100a: 59 pop %rcx
100b: e9 30 00 00 00 jmpq 1040 <bar@plt>
Which is what is expected.
With lto we get
0000000000001000 <foo>:
1000: 50 push %rax
1001: 31 c0 xor %eax,%eax
1003: e8 28 00 00 00 callq 1030 <this_is_bar@plt>
1008: 31 c0 xor %eax,%eax
100a: 59 pop %rcx
100b: e9 30 00 00 00 jmpq 1040 <this_is_real_bar@plt>
Showing that bar and __real_bar were inlined before the wrapping.</pre>
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