[Bug c++/89698] [7/8/9 Regression] Run-time error due to optimization of field access after cast at -Os/-O2 and higher

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89698

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Mar 14 09:24:21 2019
New Revision: 269677

URL: https://gcc.gnu.org/viewcvs?rev=269677&root=gcc&view=rev
Log:
2019-03-14  Richard Biener  <rguent...@suse.de>

        PR middle-end/89698
        * fold-const.c (operand_equal_p): For INDIRECT_REF check
        that the access types are similar.

        * g++.dg/torture/pr89698.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr89698.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog