Adding new option -ftrapv.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@36942 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 0 deletions

diff --git a/gcc/toplev.c b/gcc/toplev.c
index 66139638309..1dfa7f5cbf7 100644
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -947,6 +947,8 @@ typedef struct
 }
 lang_independent_options;
 
+int flag_trapv = 0;
+
 /* Add or remove a leading underscore from user symbols.  */
 int flag_leading_underscore = -1;
 
@@ -1145,6 +1147,8 @@ lang_independent_options f_options[] =
    "Report time taken by each compiler pass at end of run"},
   {"mem-report", &mem_report, 1,
    "Report on permanent memory allocation at end of run"},
+  { "trapv", &flag_trapv, 1,
+    "Trap for signed overflow in addition / subtraction / multiplication." },
 };
 
 /* Table of language-specific options.  */