[Bug tree-optimization/86614] [9 Regression] duplicate -Warray-bounds for a strncpy call with out-of-bounds offset

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86614

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Nov 23 09:12:16 2018
New Revision: 266403

URL: https://gcc.gnu.org/viewcvs?rev=266403&root=gcc&view=rev
Log:
        PR tree-optimization/86614
        * gimple-ssa-warn-restrict.c (maybe_diag_offset_bounds): Return early
        if TREE_NO_WARNING is set on ref.ref.

        * c-c++-common/Warray-bounds-2.c (wrap_strncpy_dstarray_diff_neg,
        call_strncpy_dstarray_diff_neg): Don't expect late -Warray-bounds
        warnings, just early ones from FE.  Remove dg-prune-output.
        * c-c++-common/Warray-bounds-6.c: New test.

Added:
    trunk/gcc/testsuite/c-c++-common/Warray-bounds-6.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-ssa-warn-restrict.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/c-c++-common/Warray-bounds-2.c