diff --git a/libunwind/src/DwarfInstructions.hpp b/libunwind/src/DwarfInstructions.hpp
--- a/libunwind/src/DwarfInstructions.hpp
+++ b/libunwind/src/DwarfInstructions.hpp
@@ -91,8 +91,8 @@
     return (pint_t)addressSpace.getRegister(cfa + (pint_t)savedReg.value);
 
   case CFI_Parser<A>::kRegisterInCFADecrypt: // sparc64 specific
-    return addressSpace.getP(cfa + (pint_t)savedReg.value) ^
-           getSparcWCookie(registers, 0);
+    return (pint_t)(addressSpace.getP(cfa + (pint_t)savedReg.value) ^
+           getSparcWCookie(registers, 0));
 
   case CFI_Parser<A>::kRegisterAtExpression:
     return (pint_t)addressSpace.getRegister(evaluateExpression(