Back to old encoding of versions in binary files

(Undoing part of commit f53eabeed8.)  It is better to keep this encoding
stable, so that all Lua versions can read at least the version of a
binary file.

1 files changed, 6 insertions, 1 deletions

diff --git a/lundump.h b/lundump.h
index 5b05fed4..2df6923e 100644
--- a/lundump.h
+++ b/lundump.h
@@ -18,7 +18,12 @@
 #define LUAC_INT        0x5678
 #define LUAC_NUM        cast_num(370.5)
 
-#define LUAC_VERSION    LUA_VERSION_NUM
+/*
+** Encode major-minor version in one byte, one nibble for each
+*/
+#define MYINT(s)        (s[0]-'0')  /* assume one-digit numbers */
+#define LUAC_VERSION    (MYINT(LUA_VERSION_MAJOR)*16+MYINT(LUA_VERSION_MINOR))
+
 #define LUAC_FORMAT     0       /* this is the official format */
 
 /* load one chunk; from lundump.c */