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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - LLD + -fsanitize=address segfaults in scandir."
href="https://bugs.llvm.org/show_bug.cgi?id=37303">37303</a>
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<th>Summary</th>
<td>LLD + -fsanitize=address segfaults in scandir.
</td>
</tr>
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<th>Product</th>
<td>lld
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>jeanmichael.celerier@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<pre>Hi,
the following fails when compiled with -fsanitize=address -fuse-ld=lld :
bug.c:
#include <dirent.h>
#include <fcntl.h>
int filter(const struct dirent *dirent) { return 0; }
int main() {
struct dirent **namelist;
scandir("/usr/lib", &namelist, filter, versionsort);
}
$ clang -D_GNU_SOURCE -O0 foo.c -fsanitize=address -fuse-ld=lld
$ ./a.out
AddressSanitizer:DEADLYSIGNAL
=================================================================
==23603==ERROR: AddressSanitizer: SEGV on unknown address 0x0000fffd2f8a
(pc 0x55bd8515b3b3 bp 0x7ffecc9d0cd0 sp 0x7ffecc9d0450 T0)
==23603==The signal is caused by a WRITE memory access.
#0 0x55bd8515b3b2 in __interceptor_scandir.part.106
(/tmp/a.out+0xa73b2)
#1 0x55bd85201c5e in main (/tmp/a.out+0x14dc5e)
#2 0x7fb2e5c819a6 in __libc_start_main (/usr/lib/libc.so.6+0x219a6)
#3 0x55bd85105029 in _start (/tmp/a.out+0x51029)
It works fine with -fuse-ld=gold/bfd</pre>
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