[Bug c/53968] integer undefined behaviors in GCC

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53968

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-08-13 12:40:04 UTC ---
Author: jakub
Date: Mon Aug 13 12:39:54 2012
New Revision: 190342

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190342
Log:
    PR c/53968
    * tree.c (integer_pow2p): Avoid undefined signed overflows.
    * simplify-rtx.c (neg_const_int): Likewise.
    * expr.c (fixup_args_size_notes): Likewise.
    * stor-layout.c (set_min_and_max_values_for_integral_type): Likewise.
    * double-int.c (mul_double_wide_with_sign): Likewise.
    (double_int_mask): Likewise.
    * tree-ssa-loop-ivopts.c (get_address_cost): Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/double-int.c
    trunk/gcc/expr.c
    trunk/gcc/simplify-rtx.c
    trunk/gcc/stor-layout.c
    trunk/gcc/tree-ssa-loop-ivopts.c
    trunk/gcc/tree.c