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[Bug rtl-optimization/82044] runtime signed integer overflow in check_mem_read_rtx() and all_positions_needed_p() in dse.c
- From: "marxin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 21 Nov 2017 13:39:45 +0000
- Subject: [Bug rtl-optimization/82044] runtime signed integer overflow in check_mem_read_rtx() and all_positions_needed_p() in dse.c
- Auto-submitted: auto-generated
- References: <bug-82044-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82044
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Nov 21 13:39:14 2017
New Revision: 255001
URL: https://gcc.gnu.org/viewcvs?rev=255001&root=gcc&view=rev
Log:
Fix UBSAN errors in dse.c (PR rtl-optimization/82044).
2017-11-21 Martin Liska <mliska@suse.cz>
PR rtl-optimization/82044
PR tree-optimization/82042
* dse.c (check_mem_read_rtx): Check for overflow.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dse.c