[Bug bootstrap/64676] [5.0 Regression] SEGV in tree-ssa-structalias.c solve_constraint

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64676

--- Comment #4 from David Edelsohn <dje at gcc dot gnu.org> ---
Sorry, first use of the stage 2 compiler that presumably was miscompiled by
stage 1 compiler.