Merged @luckyluke's change for detecting overflow of unsigned add, sub

and mul operations.  Refactored tests into two main cases, and
disabled them on LLVM 2.9, which does not support -fsanitized=*signed-integer-overflow.

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/Core/SpecialFunctionHandler.h b/lib/Core/SpecialFunctionHandler.h
index f68c6edb..d52b8fc5 100644
--- a/lib/Core/SpecialFunctionHandler.h
+++ b/lib/Core/SpecialFunctionHandler.h
@@ -132,6 +132,10 @@ namespace klee {
     HANDLER(handleUnderConstrained);
     HANDLER(handleWarning);
     HANDLER(handleWarningOnce);
+    HANDLER(handleAddOverflow);
+    HANDLER(handleMulOverflow);
+    HANDLER(handleSubOverflow);
+    HANDLER(handleDivRemOverflow);
 #undef HANDLER
   };
 } // End klee namespace