https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84051
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Known to work| |4.5.4
Summary|missing -Warray-bounds on |[6/7/8 Regression] missing
|an out-of-bounds access via |-Warray-bounds on an
|an array pointer |out-of-bounds access via an
| |array pointer
Known to fail| |4.6.4, 4.7.4, 4.8.4, 4.9.4,
| |5.5.0, 6.4.0, 7.2.0, 8.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Bisection points to either r158060 or r158060, both committed into GCC 4.6.
The latter seems like the more likely culprit:
2010-04-07 Richard Guenther <rguent...@suse.de>
PR tree-optimization/43270
* tree-vrp.c (check_array_ref): Fix flexible array member
detection.
* tree-ssa-sccvn.h (fully_constant_vn_reference_p): Declare.
* tree-ssa-pre.c (phi_translate_1): Adjust.
(fully_constant_expression): Split out vn_reference handling to ...
* tree-ssa-sccvn.c (fully_constant_vn_reference_p): ... here.
Fold reads from constant strings.
(vn_reference_lookup): Handle fully constant references.
(vn_reference_lookup_pieces): Likewise.
* Makefile.in (expmed.o-warn): Add -Wno-error.
