[Bug middle-end/78548] [7 Regression ]ICE on valid C code on x86_64-linux-gnu at -O2 and -O3 in 64-bit mode with -Wall (*** Error in `/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/cc1': double free or corruption (fasttop): 0x0000000003c15810 ***)

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78548

--- Comment #8 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Author: aldyh
Date: Tue Dec  6 10:35:37 2016
New Revision: 243289

URL: https://gcc.gnu.org/viewcvs?rev=243289&root=gcc&view=rev
Log:
        PR middle-end/78548
        * tree-ssa-uninit.c (simplify_preds_4): Call release() instead of
        destroy_predicate_vecs.
        (uninit_uses_cannot_happen): Make uninit_preds a scalar.

Added:
    trunk/gcc/testsuite/gcc.dg/uninit-pr78548.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-uninit.c