https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97830
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:aaccdb9cec423ef4de9d541dbe0a95fa3346f430 commit r11-5047-gaaccdb9cec423ef4de9d541dbe0a95fa3346f430 Author: Richard Biener <rguent...@suse.de> Date: Mon Nov 16 08:40:47 2020 +0100 tree-optimization/97830 - fix compare of incomplete type size in VN This avoids passing NULL to expressions_equal_p. 2020-11-16 Richard Biener <rguent...@suse.de> PR tree-optimization/97830 * tree-ssa-sccvn.c (vn_reference_eq): Check for incomplete types before comparing TYPE_SIZE. * gcc.dg/pr97830.c: New testcase.