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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/4541/">https://reviewboard.asterisk.org/r/4541/</a>
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<p style="margin-top: 0;">On March 31st, 2015, 5:50 p.m. CEST, <b>Mark Michelson</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/4541/diff/1/?file=73002#file73002line9089" style="color: black; font-weight: bold; text-decoration: underline;">/branches/13/apps/app_queue.c</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static char *__queues_show(struct mansession *s, int fd, int argc, const char * const *argv)</pre></td>
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<th bgcolor="#e9eaa8" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">9089</font></th>
<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>ast_str_append(&out, 0, " (%s", mem->interface);</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>ast_str_append(&out, 0, " (%s<span class="hl"> from %s)</span>", mem->interface<span class="hl">, mem->state_interface</span>);</pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>if (mem->state_interface) {</pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>ast_str_append(&out, 0, " from %s", mem->state_interface);</pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>}</pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>ast_str_append(&out, 0, ")");</pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This change is not correct. While the mem->state_interface will always be non-NULL (thanks, clang!), it may not have been configured and will therefore be zero-length.
The correct fix here is to switch the previous
if (mem->state_interface)
to be
if (ast_strlen_zero(mem->state_interface))</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Thanks for pointing that one out.
Fixed using "if (!ast_strlen_zero(mem->state_interface))" instead :-)</pre>
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<blockquote style="margin-left: 1em; border-left: 2px solid #d0d0d0; padding-left: 10px;">
<p style="margin-top: 0;">On March 31st, 2015, 5:50 p.m. CEST, <b>Mark Michelson</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/4541/diff/1/?file=73004#file73004line876" style="color: black; font-weight: bold; text-decoration: underline;">/branches/13/res/res_smdi.c</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int smdi_md_q_cmp_fn(void *obj, void *arg, int flags)</pre></td>
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<th bgcolor="#ebb1ba" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">876</font></th>
<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="n">search_msg</span><span class="o">-></span><span class="n">mesg_desk_num</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">877</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">cmp</span> <span class="o">=</span> <span class="n">strcmp</span><span class="p">(</span><span class="n">msg</span><span class="o">-></span><span class="n">mesg_desk_num</span><span class="p">,</span> <span class="n">search_msg</span><span class="o">-></span><span class="n">mesg_desk_num</span><span class="p">);</span></pre></td>
<th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">876</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="n">cmp</span> <span class="o">=</span> <span class="n">strcmp</span><span class="p">(</span><span class="n">msg</span><span class="o">-></span><span class="n">mesg_desk_num</span><span class="p">,</span> <span class="n">search_msg</span><span class="o">-></span><span class="n">mesg_desk_num</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="p">}</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="n">search_msg</span><span class="o">-></span><span class="n">mesg_desk_term</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">880</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">cmp</span> <span class="o">|=</span> <span class="n">strcmp</span><span class="p">(</span><span class="n">msg</span><span class="o">-></span><span class="n">mesg_desk_term</span><span class="p">,</span> <span class="n">search_msg</span><span class="o">-></span><span class="n">mesg_desk_term</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="n">cmp</span> <span class="o">|=</span> <span class="n">strcmp</span><span class="p">(</span><span class="n">msg</span><span class="o">-></span><span class="n">mesg_desk_term</span><span class="p">,</span> <span class="n">search_msg</span><span class="o">-></span><span class="n">mesg_desk_term</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="p">}</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This change is incorrect. The if checks should be changed to
if (ast_strlen_zero(search_msg->mesg_dsk_num))
and
if (ast_strlen_zero(search_msg->mesg_desk_term))</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Fixed using "if (!ast_strlen_zero(...)) instead.
Thanks Mark !</pre>
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<p>- Diederik</p>
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<p>On March 31st, 2015, 6:05 p.m. CEST, Diederik de Groot wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By Diederik de Groot.</div>
<p style="color: grey;"><i>Updated March 31, 2015, 6:05 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-24917">ASTERISK-24917</a>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
Asterisk
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">clang's static analyzer will throw quite a number warnings / errors during compilation, some of which can be very helpfull in finding corner-case bugs.
clang compiler warning:-Wpointer-bool-conversion
Issues:
chan_pjsip.c:1898:13: warning: address of array 'data->text' will always evaluate to 'true' [-Wpointer-bool-conversion]
if (!data->text) {
~~~~~~~^~~~
app_minivm.c:1841:18: warning: address of array 'etemplate->locale' will always evaluate to 'true' [-Wpointer-bool-conversion]
if (etemplate->locale) {
~~ ~~~~~~~~~~~^~~~~~
app_minivm.c:1871:17: warning: address of array 'etemplate->locale' will always evaluate to 'true' [-Wpointer-bool-conversion]
if (etemplate->locale) {
~~ ~~~~~~~~~~~^~~~~~
app_queue.c:6686:19: warning: address of array 'qe->parent->monfmt' will always evaluate to 'true' [-Wpointer-bool-conversion]
if (qe->parent->monfmt && *qe->parent->monfmt) {
~~~~~~~~~~~~^~~~~~ ~~
app_queue.c:9090:15: warning: address of array 'mem->state_interface' will always evaluate to 'true' [-Wpointer-bool-conversion]
if (mem->state_interface) {
~~ ~~~~~^~~~~~~~~~~~~~~
res_smdi.c:876:19: warning: address of array 'search_msg->mesg_desk_num' will always evaluate to 'true' [-Wpointer-bool-conversion]
if (search_msg->mesg_desk_num) {
~~ ~~~~~~~~~~~~^~~~~~~~~~~~~
res_smdi.c:879:19: warning: address of array 'search_msg->mesg_desk_term' will always evaluate to 'true' [-Wpointer-bool-conversion]
if (search_msg->mesg_desk_term) {
~~ ~~~~~~~~~~~~^~~~~~~~~~~~~~
Changed: removed the superfluous checks</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">
<li>/branches/13/res/res_smdi.c <span style="color: grey">(433444)</span></li>
<li>/branches/13/channels/chan_pjsip.c <span style="color: grey">(433444)</span></li>
<li>/branches/13/apps/app_queue.c <span style="color: grey">(433444)</span></li>
<li>/branches/13/apps/app_minivm.c <span style="color: grey">(433444)</span></li>
</ul>
<p><a href="https://reviewboard.asterisk.org/r/4541/diff/" style="margin-left: 3em;">View Diff</a></p>
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