diff --git a/ChangeLog b/ChangeLog
index e4e0e8b8a20241..9c6e8916de3ad1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Jan  9 13:26:18 2003  Akinori MUSHA  <knu@iDaemons.org>
+
+	* st.h, st.c: Back out the introduction of st_*_func_t.  Some
+	  compilers complain about function type mismatch.
+
 Wed Jan 08 17:10:32 2003  NAKAMURA Usaku <usa@ruby-lang.org>
 
 	* ext/Win32API/lib/win32/registry.rb: added. [new]
diff --git a/st.c b/st.c
index d9e8be497013b9..1cc0e2f4d78132 100644
--- a/st.c
+++ b/st.c
@@ -43,8 +43,8 @@ static struct st_hash_type type_numhash = {
 /* extern int strcmp(const char *, const char *); */
 static int strhash(const char *);
 static struct st_hash_type type_strhash = {
-    (st_compare_func_t)strcmp,
-    (st_hash_func_t)strhash,
+    strcmp,
+    strhash,
 };
 
 #ifdef RUBY_PLATFORM
@@ -482,7 +482,7 @@ st_cleanup_safe(table, never)
 void
 st_foreach(table, func, arg)
     st_table *table;
-    st_each_func_t func;
+    int (*func)();
     st_data_t arg;
 {
     st_table_entry *ptr, *last, *tmp;
diff --git a/st.h b/st.h
index 223f4f66e77933..888ca50e4f4a53 100644
--- a/st.h
+++ b/st.h
@@ -8,15 +8,11 @@
 
 typedef long st_data_t;
 
-typedef int (*st_compare_func_t)(st_data_t data1, st_data_t data2);
-typedef int (*st_hash_func_t)(st_data_t data);
-typedef int (*st_each_func_t)(st_data_t key, st_data_t value, st_data_t data);
-
 typedef struct st_table st_table;
 
 struct st_hash_type {
-    st_compare_func_t compare;
-    st_hash_func_t hash;
+    int (*compare)();
+    int (*hash)();
 };
 
 struct st_table {
@@ -40,14 +36,14 @@ int st_delete(st_table *, st_data_t *, st_data_t *);
 int st_delete_safe(st_table *, st_data_t *, st_data_t *, st_data_t);
 int st_insert(st_table *, st_data_t, st_data_t);
 int st_lookup(st_table *, st_data_t, st_data_t *);
-void st_foreach(st_table *, st_each_func_t, st_data_t);
+void st_foreach(st_table *, int (*)(), st_data_t);
 void st_add_direct(st_table *, st_data_t, st_data_t);
 void st_free_table(st_table *);
 void st_cleanup_safe(st_table *, st_data_t);
 st_table *st_copy(st_table *);
 
-#define ST_NUMCMP	((st_compare_func_t) 0)
-#define ST_NUMHASH	((st_hash_func_t) -2)
+#define ST_NUMCMP	((int (*)()) 0)
+#define ST_NUMHASH	((int (*)()) -2)
 
 #define st_numcmp	ST_NUMCMP
 #define st_numhash	ST_NUMHASH