--- a/js/src/jsgc.cpp
+++ b/js/src/jsgc.cpp
@@ -1176,7 +1176,7 @@
 
     uintptr_t *stackMin, *stackEnd;
 #if JS_STACK_GROWTH_DIRECTION > 0
-    stackMin = rt->nativeStackBase;
+    stackMin = reinterpret_cast<uintptr_t *>(rt->nativeStackBase);
     stackEnd = cgcd->nativeStackTop;
 #else
     stackMin = cgcd->nativeStackTop + 1;