[Bug c/88956] [9 Regression] ICE: Floating point exception on a memcpy from an zero-length constant array

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88956

--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Wed Jan 30 03:04:14 2019
New Revision: 268378

URL: https://gcc.gnu.org/viewcvs?rev=268378&root=gcc&view=rev
Log:
PR middle-end/88956 - ICE: Floating point exception on a memcpy from
a zero-length constant array

gcc/ChangeLog:

        PR c/88956
        * gimple-fold.c (fold_array_ctor_reference): Avoid zero-length arrays.

gcc/testsuite/ChangeLog:

        PR c/88956
        * gcc.dg/Warray-bounds-39.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/Warray-bounds-39.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-fold.c
    trunk/gcc/testsuite/ChangeLog