'const' is problematic in code in the final section of a Bison file (Bison defines

it away)

ext/standard/parsedate.y

@@ -452,7 +452,7 @@ o_merid	: /* NULL */
 
 %%
 
-time_t get_date (const char *p, const time_t *now);
+time_t get_date (char *p, time_t *now);
 
 #ifndef PHP_WIN32
 extern struct tm	*gmtime();
@@ -903,8 +903,7 @@ difftm (struct tm *a, struct tm *b)
 	  + (a->tm_sec - b->tm_sec));
 }
 
-time_t
-parse_date (const char *p, const time_t *now)
+time_t parse_date(char *p, time_t *now)
 {
   struct tm tm, tm0, *tmp;
   time_t Start;