For the same reason why we used to have USE_LIBBACKTRACE with the old
Android makefiles, allow to build Mesa without linking to it.
In recent VNDK versions, libbacktrace isn't available.
When building without linking libbacktrace, for some reason some symbols
related to C++ exception handling are exposed. Allow them in the symbols
check script.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Reviewed-by: Sergi Blanch Torné <sergi.blanch.torne@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20019>
The previous implementation kept a hashtable of a Backtrace object per
thread. debug_backtrace_capture is supposed to store a backtrace in
the passed in debug_stack_frame array, but instead overwrote the
per-thread Backtrace object.
This new version works more like the libunwind based capture. We hash
the file and symbol names and store pointers in the debug_stack_frame
struct. This way debug_backtrace_capture doesn't overwrite previous
captures or allocate memory that needs to be freed.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6112>
