update lua/include/llimits.h.

添加定义HARDSTACKTESTS



内存不足的情况下,调用luaC_fullgc(L, 0)会引起死循环

添加定义HARDSTACKTESTS后,对堆栈会有检测和保护效果,实测暂时没有发现死循环



这个修改需要长期观察

lua/include/llimits.h

@@ -305,6 +305,7 @@ typedef unsigned long Instruction;
 /*
 ** macro to control inclusion of some hard tests on stack reallocation
 */
+#define HARDSTACKTESTS
 #if !defined(HARDSTACKTESTS)
 #define condmovestack(L,pre,pos)	((void)0)
 #else