diff --git a/lib/Common/Common/Int32Math.cpp b/lib/Common/Common/Int32Math.cpp
index 8f5a25e5ac0..b85dafd7287 100644
--- a/lib/Common/Common/Int32Math.cpp
+++ b/lib/Common/Common/Int32Math.cpp
@@ -180,6 +180,9 @@ Int32Math::Inc(int32 val, int32 *pResult)
     *pResult = val + 1;
     // Overflow if result ends up less than input
     return *pResult <= val;
+#elif defined(__APPLE__)
+    *pResult = val + 1;
+    return val == INT32_MAX; // Overflow if val was int max
 #else
     return __builtin_add_overflow(val, 1, pResult);
 #endif
@@ -192,6 +195,9 @@ Int32Math::Dec(int32 val, int32 *pResult)
     *pResult = val - 1;
     // Overflow if result ends up greater than input
     return *pResult >= val;
+#elif defined(__APPLE__)
+    *pResult = val - 1;
+    return val == INT32_MIN; // Overflow if val was int min
 #else
     return __builtin_sub_overflow(val, 1, pResult);
 #endif