Clearer code for controlling maximum registers

Plus, added a test to check that limit.

1 files changed, 1 insertions, 5 deletions

diff --git a/lcode.c b/lcode.c
index 79c15132..bc0a3341 100644
--- a/lcode.c
+++ b/lcode.c
@@ -31,10 +31,6 @@
 #include "lvm.h"
 
 
-/* Maximum number of registers in a Lua function (must fit in 8 bits) */
-#define MAXREGS         255
-
-
 #define hasjumps(e)     ((e)->t != (e)->f)
 
 
@@ -466,7 +462,7 @@ static int luaK_codek (FuncState *fs, int reg, int k) {
 void luaK_checkstack (FuncState *fs, int n) {
   int newstack = fs->freereg + n;
   if (newstack > fs->f->maxstacksize) {
-    if (newstack >= MAXREGS)
+    if (newstack > MAX_FSTACK)
       luaX_syntaxerror(fs->ls,
         "function or expression needs too many registers");
     fs->f->maxstacksize = cast_byte(newstack);