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<base href="http://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Local label in inline assembly"
href="http://llvm.org/bugs/show_bug.cgi?id=18338">18338</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Local label in inline assembly
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</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>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>gtdplatform@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The following inline assembly can be complied by MSVC 2010, but not by Clang.
bool asm_inline()
{
_asm {
jmp done;
done:
}
}
bool asm_inline_1()
{
_asm {
jmp done;
done:
}
}
Clang produces error:
Debug\test.asm:45:2: error: invalid symbol redefinition
done:
^
Apprantly Clang does't treat the label "done" as local lable. Here's the
assembly code generated by Clang:
"?asm_inline@@YA_NXZ": # @"\01?asm_inline@@YA_NXZ"
# BB#0: # %entry
pushl %ebp
movl %esp, %ebp
pushl %esi
pushl %eax
movl %esp, %esi
#APP
.intel_syntax
jmp done
done:
.att_syntax
#NO_APP
ud2
.def "?asm_inline_1@@YA_NXZ";
.scl 2;
.type 32;
.endef
.globl "?asm_inline_1@@YA_NXZ"
.align 16, 0x90
"?asm_inline_1@@YA_NXZ": # @"\01?asm_inline_1@@YA_NXZ"
# BB#0: # %entry
pushl %ebp
movl %esp, %ebp
pushl %esi
pushl %eax
movl %esp, %esi
#APP
.intel_syntax
jmp done
done:
.att_syntax
#NO_APP
ud2
.def _main;
.scl 2;
.type 32;
.endef
.globl _main
.align 16, 0x90</pre>
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