1 files changed, 6 insertions, 1 deletions

diff --git a/ltable.h b/ltable.h
index ebd7f8ec..c0060f4b 100644
--- a/ltable.h
+++ b/ltable.h
@@ -15,7 +15,12 @@
 #define gnext(n)        ((n)->u.next)
 
 
-#define invalidateTMcache(t)    ((t)->flags = 0)
+/*
+** Clear all bits of fast-access metamethods, which means that the table
+** may have any of these metamethods. (First access that fails after the
+** clearing will set the bit again.)
+*/
+#define invalidateTMcache(t)    ((t)->flags &= ~maskflags)
 
 
 /* true when 't' is using 'dummynode' as its hash part */