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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - comments in assembly files confuse line numbers in debugging with lldb"
href="https://bugs.llvm.org/show_bug.cgi?id=33664">33664</a>
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<th>Summary</th>
<td>comments in assembly files confuse line numbers in debugging with lldb
</td>
</tr>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>4.0
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>MacOS X
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
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<th>Reporter</th>
<td>mike.benfield@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>I don't know whether this is a problem with lldb or with the debugging
information clang produces. In the following example, I try to set a breakpoint
at line 11 but lldb points to line 16.
$ cat trash.s
.intel_syntax noprefix
.text
.global _main
_main:
# text
# text
# text
# text
# text
mov rbx, 20
# text
# text
# text
# text
# text
mov rax, 5
ret
$ clang -c -g trash.s
$ clang trash.o
$ lldb a.out
(lldb) target create "a.out"
Current executable set to 'a.out' (x86_64).
(lldb) breakpoint set -f trash.s -l 11
Breakpoint 1: where = a.out`main, address = 0x0000000100000fa9
(lldb) run
Process 24212 launched:
'/Users/mike/Dropbox/Repositories/assembly_experiments/isort/a.out' (x86_64)
Process 24212 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
frame #0: 0x0000000100000fa9 a.out`main at trash.s:16
13 # text
14 # text
15 # text
-> 16 # text
17 mov rax, 5
18 ret</pre>
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