1 files changed, 3 insertions, 0 deletions
diff --git a/lib/VMCore/Instructions.cpp b/lib/VMCore/Instructions.cpp
index fe30271f84..0dd69a18bc 100644
--- a/lib/VMCore/Instructions.cpp
+++ b/lib/VMCore/Instructions.cpp
@@ -2220,6 +2220,8 @@ CastInst::getCastOpcode(
     } else {
       assert(isa<PointerType>(SrcTy) &&
              "Casting from a value that is not first-class type");
+      assert(!SrcIsSigned &&
+             "Pointer types cannot be considered signed for conversions!");
       return PtrToInt;                              // ptr -> int
     }
   } else if (DestTy->isFloatingPoint()) {           // Casting to floating pt
@@ -2259,6 +2261,7 @@ CastInst::getCastOpcode(
     if (isa<PointerType>(SrcTy)) {
       return BitCast;                               // ptr -> ptr
     } else if (SrcTy->isInteger()) {
+      assert(!SrcIsSigned && "Cannot cast signed integer to pointer!");
       return IntToPtr;                              // int -> ptr
     } else {
       assert(!"Casting pointer to other than pointer or int");