First step in making Lua use exceptions properly

luprex/ext/eris-master/src/ldo.c

@@ -50,9 +50,12 @@
 
 #if defined(__cplusplus) && !defined(LUA_USE_LONGJMP)
 /* C++ exceptions */
-#define LUAI_THROW(L,c)		throw(c)
+class LuaException {};
+#define LUAI_THROW(L,c)		throw(LuaException())
+// Do not call the lua interpreter inside a try-catch block.  If you do,
+// the intepreter state could be corrupted.
 #define LUAI_TRY(L,c,a) \
-	try { a } catch(...) { if ((c)->status == 0) (c)->status = -1; }
+try { a } catch(LuaException e) { if ((c)->status == 0) (c)->status = -1; }
 #define luai_jmpbuf		int  /* dummy variable */
 
 #elif defined(LUA_USE_ULONGJMP)