[Bug c/87387] trunk/gcc/builtins.c:585:7: warning: -Wself-assign problem

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87387

--- Comment #4 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Tue Sep 25 22:17:45 2018
New Revision: 264585

URL: https://gcc.gnu.org/viewcvs?rev=264585&root=gcc&view=rev
Log:
        PR c/87387
        * builtins.c (unterminated_array): Simplify.
        * expr.c (string_constant): Handle SSA_NAME.  Add more exceptions
        where pointer arithmetic is safe.

        * gcc.dg/warn-stpcpy-no-nul.c: Drop unnecessary xfails.
        * gcc.dg/warn-stplen-no-nul.c: Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/expr.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/warn-stpcpy-no-nul.c
    trunk/gcc/testsuite/gcc.dg/warn-strlen-no-nul.c