https://bugs.freedesktop.org/show_bug.cgi?id=95128
Bug ID: 95128
Summary: [Gallium] uninitialized once_flag causes unregistered
targets
Product: Mesa
Version: 11.2
Hardware: Other
OS: All
Status: NEW
Severity: major
Priority: medium
Component: Mesa core
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
>From this commit:
https://cgit.freedesktop.org/mesa/mesa/commit/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp?id=76cfd6f1da3748effb480e4f1151910af59fb88a
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.
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