[Bug c/86093] [8/9 Regression] volatile ignored on pointer in C

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86093

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jun 15 20:53:54 2018
New Revision: 261663

URL: https://gcc.gnu.org/viewcvs?rev=261663&root=gcc&view=rev
Log:
        PR c/86093
        * c-typeck.c (pointer_diff): Cast both pointers to unqualified types
        before doing POINTER_DIFF_EXPR.

        * c-c++-common/pr86093.c: New test.

Added:
    trunk/gcc/testsuite/c-c++-common/pr86093.c
Modified:
    trunk/gcc/c/ChangeLog
    trunk/gcc/c/c-typeck.c
    trunk/gcc/testsuite/ChangeLog