Add a -ftrapv-handler= option which allows a handler to invoke instead of simply aborting when a signed operation overflows. This mirrors the (GCC-incompatible) behaviour from clang 1.0 and 1.1 when -ftrapv was specified, but allows the handler to be defined for each compilation unit.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114192 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Driver/CC1Options.td b/include/clang/Driver/CC1Options.td
index 99f748e..512c2ca 100644
--- a/include/clang/Driver/CC1Options.td
+++ b/include/clang/Driver/CC1Options.td
@@ -455,6 +455,9 @@
HelpText<"enable objective-c's enhanced nonfragile abi">;
def ftrapv : Flag<"-ftrapv">,
HelpText<"Trap on integer overflow">;
+def ftrapv_handler : Separate<"-ftrapv-handler">,
+ MetaVarName<"<function name>">,
+ HelpText<"Specify the function to be called on overflow.">;
def fwrapv : Flag<"-fwrapv">,
HelpText<"Treat signed integer overflow as two's complement">;
def pic_level : Separate<"-pic-level">,