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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - getenv() returns a null char* when debugging with lldb"
href="https://llvm.org/bugs/show_bug.cgi?id=23465">23465</a>
</td>
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<th>Summary</th>
<td>getenv() returns a null char* when debugging with lldb
</td>
</tr>
<tr>
<th>Product</th>
<td>lldb
</td>
</tr>
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<th>Version</th>
<td>3.3
</td>
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<tr>
<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>
<tr>
<th>Severity</th>
<td>release blocker
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>lldb-dev@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Reporter</th>
<td>samuel.tebbs@gmail.com
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>When calling getenv() with a valid environment variable name, a null char* is
returned and the following error report is shown by lldb when calling "new
std::string()" with the return value of getenv():
Process 21805 stopped
* thread #1: tid = 0x172288, 0x00007fff80e61152 libsystem_c.dylib`strlen + 18,
queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1,
address=0x0)
frame #0: 0x00007fff80e61152 libsystem_c.dylib`strlen + 18
libsystem_c.dylib`strlen:
-> 0x7fff80e61152 <+18>: pcmpeqb (%rdi), %xmm0
0x7fff80e61156 <+22>: pmovmskb %xmm0, %esi
0x7fff80e6115a <+26>: andq $0xf, %rcx
0x7fff80e6115e <+30>: orq $-0x1, %rax
(lldb) v
lldb-330.0.44
This doesn't happen when executing the compiled binary without lldb.
Using Mac OS X v10.10.3 (Yosemite)</pre>
</div>
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