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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/61893] Constant folding inhibits trapping with -ftrapv Date: Fri, 25 Jul 2014 10:36:00 -0000 [thread overview] Message-ID: <bug-61893-4-jnzjkV7Q0U@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-61893-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61893 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Fixed by sth like Index: fold-const.c =================================================================== --- fold-const.c (revision 212388) +++ fold-const.c (working copy) @@ -1121,7 +1121,12 @@ STRIP_NOPS (arg2); if (TREE_CODE (arg1) == INTEGER_CST) - return int_const_binop (code, arg1, arg2); + { + tree res = int_const_binop (code, arg1, arg2); + if (res && TYPE_OVERFLOW_TRAPS (TREE_TYPE (arg1)) && TREE_OVERFLOW (res)) + return NULL_TREE; + return res; + } if (TREE_CODE (arg1) == REAL_CST) {
next prev parent reply other threads:[~2014-07-25 10:36 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-07-24 9:32 [Bug middle-end/61893] New: " rguenth at gcc dot gnu.org 2014-07-25 10:36 ` rguenth at gcc dot gnu.org [this message] 2014-07-25 11:47 ` [Bug middle-end/61893] " rguenth at gcc dot gnu.org 2014-08-27 9:59 ` rguenth at gcc dot gnu.org 2015-10-22 8:19 ` rguenth at gcc dot gnu.org 2015-10-22 11:44 ` rguenth at gcc dot gnu.org 2015-10-22 11:45 ` rguenth at gcc dot gnu.org 2021-09-13 20:41 ` pinskia at gcc dot gnu.org
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