[Bug tree-optimization/64277] [4.9/5 Regression] Incorrect warning "array subscript is above array bounds"

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64277

--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jan 27 09:49:29 2015
New Revision: 220157

URL: https://gcc.gnu.org/viewcvs?rev=220157&root=gcc&view=rev
Log:
2015-01-27  Richard Biener  <rguent...@suse.de>

    PR tree-optimization/56273
    PR tree-optimization/59124
    PR tree-optimization/64277
    * tree-vrp.c (vrp_finalize): Emit array-bound warnings only
    from the first VRP pass.

    * g++.dg/warn/Warray-bounds-6.C: New testcase.
    * gcc.dg/Warray-bounds-12.c: Likewise.
    * gcc.dg/Warray-bounds-13.c: Likewise.

Added:
    trunk/gcc/testsuite/g++.dg/warn/Warray-bounds-6.C
    trunk/gcc/testsuite/gcc.dg/Warray-bounds-12.c
    trunk/gcc/testsuite/gcc.dg/Warray-bounds-13.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c