Matt Turner
05dc4eb536
The `capture_not_overwritten` unit test captures and compares two
backtraces -- one from inside a call to `func_c` and one outside -- and
confirms that they are not identical. That is, that `func_c` is in the
backtrace.
On 32-bit x86, without `-fno-omit-frame-pointer`, the function will not
emit a stack frame. As a result, the unit test fails.
The fix is to compile `func_c` with the flag `-fno-omit-frame-pointer`
to prevent the compiler from optimizing out the stack frame which is
otherwise unneeded.
Bug: https://bugs.gentoo.org/823774
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/4091
Fixes: d0d14f3f64 ("util: Add unit test for stack backtrace caputure")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30622>
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