r253357 - in /trunk/gcc: ChangeLog testsuite/Ch...

[jakub@gcc.gnu.org]

Author: jakub
Date: Mon Oct  2 15:48:55 2017
New Revision: 253357

URL: https://gcc.gnu.org/viewcvs?rev=253357&root=gcc&view=rev
Log:
	* tree-dfa.c (get_ref_base_and_extent): Set *pmax_size to -1
	if *poffset + *pmax_size overflows in HOST_WIDE_INT.
	Set *poffset to 0 and *psize and *pmax_size to -1 if
	*poffset + *psize overflows in HOST_WIDE_INT.

	* gcc.dg/pr82389.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr82389.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-dfa.c