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r251381 - in /branches/gcc-7-branch/gcc: Change...


Author: rguenth
Date: Mon Aug 28 12:49:55 2017
New Revision: 251381

URL: https://gcc.gnu.org/viewcvs?rev=251381&root=gcc&view=rev
Log:
2017-08-28  Richard Biener  <rguenther@suse.de>

	Backport from mainline
	2017-06-14  Richard Biener  <rguenther@suse.de>

	PR middle-end/81088
	* fold-const.c (split_tree): Drop TREE_OVERFLOW flag from
	literal constants.
	(fold_binary_loc): When associating do not treat pre-existing
	TREE_OVERFLOW on literal constants as a reason to allow
	TREE_OVERFLOW on associated literal constants.

	* c-c++-common/ubsan/pr81088.c: New testcase.

	2017-06-13  Richard Biener  <rguenther@suse.de>

	PR middle-end/81065
	* fold-const.c (extract_muldiv_1): Remove bogus distribution
	case of C * (x * C2 + C3).
	(fold_addr_of_array_ref_difference): Properly fold index difference.

	* c-c++-common/ubsan/pr81065.c: New testcase.

	2017-06-08  Marek Polacek  <polacek@redhat.com>

	PR sanitize/80932
	* c-c++-common/ubsan/pr80932.c: Test with ints, not with long ints.

	2017-06-07  Marek Polacek  <polacek@redhat.com>

	PR sanitizer/80932
	* fold-const.c (extract_muldiv_1) <case MINUS_EXPR>: Add
	TYPE_OVERFLOW_WRAPS check. 

	* c-c++-common/ubsan/pr80932.c: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/c-c++-common/ubsan/pr80932.c
    branches/gcc-7-branch/gcc/testsuite/c-c++-common/ubsan/pr81065.c
    branches/gcc-7-branch/gcc/testsuite/c-c++-common/ubsan/pr81088.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/fold-const.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog


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