lexyy.c, pars0grm.c, pars0lex.l, pars0grm.y:

  Remove potential memory leak caused by redefined alloca, remove include of unistd.h to allow compilation on Windows

innobase/pars/pars0grm.y

@@ -13,8 +13,6 @@ the InnoDB parser.
 %{
 /* The value of the semantic attribute is a pointer to a query tree node
 que_node_t */
-#define YYSTYPE que_node_t*
-#define alloca	mem_alloc
 
 #include <math.h>
 
@@ -25,6 +23,8 @@ que_node_t */
 #include "que0que.h"
 #include "row0sel.h"
 
+#define YYSTYPE que_node_t*
+
 /* #define __STDC__ */
 
 int

innobase/pars/pars0lex.l

@@ -26,6 +26,8 @@ How to make the InnoDB parser and lexer C files:
 
 5. Rename lex.yy.c to lexyy.c.
 
+6. Remove the #include of unistd.h from about line 2500 of lexyy.c
+
 These instructions seem to work at least with bison-1.28 and flex-2.5.4 on
 Linux.
 *******************************************************/