[Bug ipa/79375] gcc/ipa-prop.c:203:32: runtime error: reference binding to null pointer of type 'struct vec' after revision r244802

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79375

--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Created attachment 40669 [details]
> Fix

I cannot tell if this patch fixes all the issues you saw, but at least it fixes
the one reported in this PR. Thanks for the quick fix.