[Bug 104246] Talos Principle Vulkan version crash: spirv_to_nir() returns NULL entry_point

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104246

--- Comment #2 from Jason Ekstrand <jason at jlekstrand.net> ---
FYI: Ever since 94ca8e04adf681b0cad6ade1c9f28856efe35ae6, most SPIR-V errors
result in spirv_to_nir bailing cleanly and returning a NULL. 
anv_pipeline_compile_to_nir then dereferences the NULL and crashes.  A more
useful backtrace would be if you set a breakpoint on _vtn_fail and gave me the
backtrace from there.

Arguably, it may be better to add an abort() to _vtn_fail when built in debug
mode because the NULL dereference is kind-of mean.

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