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<body><span class="vcard"><a class="email" href="mailto:vsk@apple.com" title="Vedant Kumar <vsk@apple.com>"> <span class="fn">Vedant Kumar</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [DebugInfo] Sign-extended variable is described by smaller stack slot, resulting in parts being filled with garbage data"
href="https://bugs.llvm.org/show_bug.cgi?id=39996">bug 39996</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Fixed By Commit(s)</td>
<td>
</td>
<td>349214
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr></table>
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<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [DebugInfo] Sign-extended variable is described by smaller stack slot, resulting in parts being filled with garbage data"
href="https://bugs.llvm.org/show_bug.cgi?id=39996#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [DebugInfo] Sign-extended variable is described by smaller stack slot, resulting in parts being filled with garbage data"
href="https://bugs.llvm.org/show_bug.cgi?id=39996">bug 39996</a>
from <span class="vcard"><a class="email" href="mailto:vsk@apple.com" title="Vedant Kumar <vsk@apple.com>"> <span class="fn">Vedant Kumar</span></a>
</span></b>
<pre>With r349214, I see:
(lldb) r
Process 36084 launched: './foo.out' (i386)
foo.out was compiled with optimization - stepping may behave oddly; variables
may not be available.
Process 36084 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
frame #0: 0x00001f60 foo.out`foo(a=-123, b=3435973836) at foo.c:12 [opt]
9 __attribute__((noinline)) void foo(int32_t a, uint32_t b) {
10 int64_t al = a;
11 int64_t rl = 6;
-> 12 bar(al);
13 bar(b);
14 }
15
Target 0: (foo.out) stopped.
(lldb) p al
(int64_t) $0 = -123</pre>
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