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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ERROR: UndefinedBehaviorSanitizer failed to allocate 0x0 (0) bytes of SetAlternateSignalStack (error code: 22)"
href="https://bugs.llvm.org/show_bug.cgi?id=50562">50562</a>
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<th>Summary</th>
<td>ERROR: UndefinedBehaviorSanitizer failed to allocate 0x0 (0) bytes of SetAlternateSignalStack (error code: 22)
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>12.0
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rjones@redhat.com
</td>
</tr>
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
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<pre>clang -o conftest -g -O3 -march=native -fsanitize=cfi -fno-sanitize-trap=all
-flto -fvisibility=hidden -Wl,-z,relro -Wl,--as-needed -Wl,-z,now
-specs=/usr/lib/rpm/redhat/redhat-hardened-ld -O3 -march=native -fsanitize=cfi
-fno-sanitize-trap=all -flto -fvisibility=hidden
-Wno-unused-command-line-argument conftest.c
./conftest
==1554568==ERROR: UndefinedBehaviorSanitizer failed to allocate 0x0 (0) bytes
of
SetAlternateSignalStack (error code: 22)
==1554568==Process memory map follows:
[..]
==1554568==End of process memory map.
==1554568==Sanitizer CHECK failed:
../lib/sanitizer_common/sanitizer_common.cpp:54 ((0 && "unable to mmap")) !=
(0) (0, 0)
configure:4233: $? = 1
configure:4240: error: in `/home/rjones/d/nbdkit':
configure:4242: error: cannot run C compiled programs.
conftest.c is very simple:
-----------
#include <stdio.h>
int
main (void)
{
FILE *f = fopen ("conftest.out", "w");
return ferror (f) || fclose (f) != 0;
;
return 0;
}
-----------
This actually happens during one of autoconf ./configure's basic compiler
tests.
clang-12.0.0-2.fc35.x86_64</pre>
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