[Bug tree-optimization/87756] missing unterminated argument warning using address of a constant character

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87756

--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Nov 23 18:45:45 2018
New Revision: 266418

URL: https://gcc.gnu.org/viewcvs?rev=266418&root=gcc&view=rev
Log:
PR tree-optimization/87756 - missing unterminated argument warning using
address of a constant character

gcc/ChangeLog:

        PR tree-optimization/87756
        * expr.c (string_constant): Synthesize a string literal from
        the address of a constant character.
        * tree.c (build_string_literal): Add an argument.
        * tree.h (build_string_literal): Same.

gcc/testsuite/ChangeLog:

        PR tree-optimization/87756
        * gcc.dg/builtin-memchr-2.c: New test.
        * gcc.dg/builtin-memchr-3.c: Same.
        * gcc.dg/warn-sprintf-no-nul-2.c: Same.


Added:
    trunk/gcc/testsuite/gcc.dg/builtin-memchr-2.c
    trunk/gcc/testsuite/gcc.dg/builtin-memchr-3.c
    trunk/gcc/testsuite/gcc.dg/warn-sprintf-no-nul-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/expr.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree.c
    trunk/gcc/tree.h