https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81889
Aldy Hernandez <aldyh at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #3 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Started with r245840.
commit 4d2b9d1e3c794a05c00708035519290e920768e8
Author: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Mar 2 13:42:05 2017 +0000
2017-03-02 Richard Biener <rguent...@suse.de>
PR tree-optimization/79345
PR c++/42000
* tree-ssa-alias.c (walk_aliased_vdefs_1): Take a limit
param and abort the walk, returning -1 if it is hit.
(walk_aliased_vdefs): Take a limit param and pass it on.
* tree-ssa-alias.h (walk_aliased_vdefs): Add a limit param,
defaulting to 0 and return a signed int.
* tree-ssa-uninit.c (struct check_defs_data): New struct.
(check_defs): New helper.
(warn_uninitialized_vars): Use walk_aliased_vdefs to warn
about uninitialized memory.
* fixed-value.c (fixed_from_string): Use ulow/uhigh to avoid
bogus uninitialized warning.
(fixed_convert_from_real): Likewise.
* g++.dg/warn/Wuninitialized-7.C: New testcase.
* c-c++-common/ubsan/bounds-2.c: Add -Wno-uninitialized.
* gcc.dg/uninit-pr19430-2.c: Add expected warning.
