Author: pfg Date: Fri Nov 15 03:05:33 2013 New Revision: 258157 URL: http://svnweb.freebsd.org/changeset/base/258157
Log: gcc: warn about integer overflow in constant expressions in the C++ frontend. This fixes GCC 28986: http://gcc.gnu.org/ml/gcc-patches/2007-01/msg00473.html Obtained from: gcc 4.3 (rev. 120558; GPLv2) MFC after: 3 weeks Modified: head/contrib/gcc/cp/typeck.c Modified: head/contrib/gcc/cp/typeck.c ============================================================================== --- head/contrib/gcc/cp/typeck.c Fri Nov 15 01:44:58 2013 (r258156) +++ head/contrib/gcc/cp/typeck.c Fri Nov 15 03:05:33 2013 (r258157) @@ -3773,6 +3773,12 @@ build_binary_op (enum tree_code code, tr result = fold_if_not_in_template (result); if (final_type != 0) result = cp_convert (final_type, result); + + if (TREE_OVERFLOW_P (result) + && !TREE_OVERFLOW_P (op0) + && !TREE_OVERFLOW_P (op1)) + overflow_warning (result); + return result; } _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
