[Bug c/84258] Bogus -Wformat warning "wide character string" for const unsigned char

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84258

--- Comment #5 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Tue May  1 18:51:15 2018
New Revision: 259807

URL: https://gcc.gnu.org/viewcvs?rev=259807&root=gcc&view=rev
Log:
-Wformat: fix nonsensical "wide character" message (PR c/84258)

gcc/c-family/ChangeLog:
        PR c/84258
        * c-format.c (struct format_check_results): Add field
        "number_non_char".
        (check_format_info): Initialize it, and warn if encountered.
        (check_format_arg): Distinguish between wide char and
        everything else when detecting arrays of non-char.

gcc/testsuite/ChangeLog:
        PR c/84258
        * c-c++-common/Wformat-pr84258.c: New test.


Added:
    trunk/gcc/testsuite/c-c++-common/Wformat-pr84258.c
Modified:
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c-format.c
    trunk/gcc/testsuite/ChangeLog