setjmp: seems register value needs to be long

include/setjmp.h

@@ -35,7 +35,7 @@ typedef struct __jmp_buf {
 __attribute__((returns_twice,always_inline))
 static inline int do_setjmp(minimal_jmp_buf _env)
 {
-    int ret;
+    long int ret;
     asm volatile(
                  // x9 is the first of the regular temporary registers
                  // per the above-mentioned Procedule Call Standard document.