https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96037
--- Comment #7 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:59cc32acc8dde3b8719b9b4f90d33e8c3e3f17bb commit r11-1804-g59cc32acc8dde3b8719b9b4f90d33e8c3e3f17bb Author: Richard Biener <rguent...@suse.de> Date: Fri Jul 3 12:50:37 2020 +0200 tree-optimization/96037 - fix uninitialized use of slp_op The following avoids leaving slp_def as passed to vect_is_simple_use by reference uninitialized. 2020-07-03 Richard Biener <rguent...@suse.de> PR tree-optimization/96037 * tree-vect-stmts.c (vect_is_simple_use): Initialize *slp_def.