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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Gallium] uninitialized once_flag causes unregistered targets"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95128">95128</a>
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<th>Summary</th>
<td>[Gallium] uninitialized once_flag causes unregistered targets
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<th>Product</th>
<td>Mesa
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<th>Version</th>
<td>11.2
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<th>Hardware</th>
<td>Other
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>major
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Mesa core
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
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<th>Reporter</th>
<td>frederic.devernay@m4x.org
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<th>QA Contact</th>
<td>mesa-dev@lists.freedesktop.org
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<p>
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<pre>From this commit:
<a href="https://cgit.freedesktop.org/mesa/mesa/commit/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp?id=76cfd6f1da3748effb480e4f1151910af59fb88a">https://cgit.freedesktop.org/mesa/mesa/commit/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp?id=76cfd6f1da3748effb480e4f1151910af59fb88a</a>
there is the line
static once_flag init_native_targets_once_flag;
where the once_flag is not initialized. This causes pthread_once() to never
call the function on some OSs (I got the bug with OSX 10.6, but not with OSX
10.11).
once_flags should *always* be initialized, as in:
static once_flag init_native_targets_once_flag = ONCE_FLAG_INIT;
The consequence is that I get errors like
"Unable to find target for this triple (no targets are registered)"
when using llvmpipe
I checked other places in Mesa that use once_flag, they are all initialized
correctly.</pre>
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