[Bug tree-optimization/92715] [10 Regression] error: position plus size exceeds size of referenced object in ‘bit_field_ref’

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92715

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Nov 29 09:18:48 2019
New Revision: 278833

URL: https://gcc.gnu.org/viewcvs?rev=278833&root=gcc&view=rev
Log:
2019-11-29  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/92715
        * tree-ssa-forwprop.c (simplify_vector_constructor): Bail
        out for uniform vectors and source vectors with less elements
        than the destination.

        * gcc.dg/torture/pr92715.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr92715.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-forwprop.c