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<base href="https://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 --- - alloc/dealloc mismatch caught by ASAN"
href="https://llvm.org/bugs/show_bug.cgi?id=29060">29060</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>alloc/dealloc mismatch caught by ASAN
</td>
</tr>
<tr>
<th>Product</th>
<td>libc++
</td>
</tr>
<tr>
<th>Version</th>
<td>3.8
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</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>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>alex.zavodny@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=17006" name="attach_17006" title="Test code that reproduces the error.">attachment 17006</a> <a href="attachment.cgi?id=17006&action=edit" title="Test code that reproduces the error.">[details]</a></span>
Test code that reproduces the error.
This simple code produces an alloc-dealloc-mismatch report when run with
address sanitization enabled:
#include <stdexcept>
int main()
{
try {
throw std::runtime_error("");
} catch (std::exception const&) {
}
}
Command line used for compilation:
clang++ -fsanitize=address --stdlib=libc++ alloc_dealloc_mismatch_repro.cpp
Produces, on execution:
=================================================================
==11344==ERROR: AddressSanitizer: alloc-dealloc-mismatch (operator new [] vs
operator delete) on 0x60300000efe0
#0 0x4f2740 (/tmp/repro/a.out+0x4f2740)
#1 0x7ff6d213cf00 (/usr/lib/x86_64-linux-gnu/libc++.so.1+0xc3f00)
#2 0x7ff6d20f6a30 (/usr/lib/x86_64-linux-gnu/libc++.so.1+0x7da30)
#3 0x4f5028 (/tmp/repro/a.out+0x4f5028)
#4 0x7ff6d118ff44 (/lib/x86_64-linux-gnu/libc.so.6+0x21f44)
#5 0x419d65 (/tmp/repro/a.out+0x419d65)
0x60300000efe0 is located 0 bytes inside of 25-byte region
[0x60300000efe0,0x60300000eff9)
allocated by thread T0 here:
#0 0x4f2290 (/tmp/repro/a.out+0x4f2290)
#1 0x7ff6d213194c (/usr/lib/x86_64-linux-gnu/libc++.so.1+0xb894c)
#2 0x7ff6d118ff44 (/lib/x86_64-linux-gnu/libc.so.6+0x21f44)
SUMMARY: AddressSanitizer: alloc-dealloc-mismatch (/tmp/repro/a.out+0x4f2740)
==11344==HINT: if you don't care about these errors you may set
ASAN_OPTIONS=alloc_dealloc_mismatch=0
==11344==ABORTING
This reproduces reliably using clang-3.8, on Ubuntu 14.04.
NOTE: the problem does not reproduce with --stdlib=libstdc++.
NOTE: this appears to be a duplicate of bug ID 17379, which is marked as fixed,
but as mentioned still repros on clang-3.8.</pre>
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