Well the absolute correct solution would involve all of:

bmomjian · bmomjian · commit ea436f9fcf8c · 2001-11-15T16:35:19.000Z
int8, int16, int32, int64 and separately uint8, uint16, uint32, uint64

The previous patch grouped:
int8, int16 and int32
uint8, uint16 and uint32
int64 and uint64  &lt;-- this grouping is wrong on AIX 4.3.3 and below

If you prefer to make 4 groups out of this you could apply this patch.

Andreas
diff --git a/configure.in b/configure.in
@@ -1174,6 +1174,8 @@ AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignme
 # doesn't work the way we want to.
 AC_CHECK_SIZEOF(int8, 0)
 AC_CHECK_SIZEOF(uint8, 0)
+AC_CHECK_SIZEOF(int64, 0)
+AC_CHECK_SIZEOF(uint64, 0)
 
 PGAC_FUNC_POSIX_SIGNALS
 
diff --git a/src/include/c.h b/src/include/c.h
@@ -12,7 +12,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: c.h,v 1.110 2001/11/15 16:09:34 momjian Exp $
+ * $Id: c.h,v 1.111 2001/11/15 16:35:19 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -270,29 +270,29 @@ typedef double *float64;
  */
 #ifdef HAVE_LONG_INT_64
 /* Plain "long int" fits, use it */
-#if SIZEOF_INT8 == 0
+#if SIZEOF_INT64 == 0
 typedef long int int64;
 #endif
-#if SIZEOF_UINT8 == 0
+#if SIZEOF_UINT64 == 0
 typedef unsigned long int uint64;
 #endif
 
 #else
 #ifdef HAVE_LONG_LONG_INT_64
 /* We have working support for "long long int", use that */
-#if SIZEOF_INT8 == 0
+#if SIZEOF_INT64 == 0
 typedef long long int int64;
 #endif
-#if SIZEOF_UINT8 == 0
+#if SIZEOF_UINT64 == 0
 typedef unsigned long long int uint64;
 #endif
 
 #else
 /* Won't actually work, but fall back to long int so that code compiles */
-#if SIZEOF_INT8 == 0
+#if SIZEOF_INT64 == 0
 typedef long int int64;
 #endif
-#if SIZEOF_UINT8 == 0
+#if SIZEOF_UINT64 == 0
 typedef unsigned long int uint64;
 #endif
 
diff --git a/src/include/pg_config.h.in b/src/include/pg_config.h.in
@@ -8,7 +8,7 @@
  * or in pg_config.h afterwards.  Of course, if you edit pg_config.h, then your
  * changes will be overwritten the next time you run configure.
  *
- * $Id: pg_config.h.in,v 1.12 2001/11/15 16:09:34 momjian Exp $
+ * $Id: pg_config.h.in,v 1.13 2001/11/15 16:35:19 momjian Exp $
  */
 
 #ifndef PG_CONFIG_H
@@ -699,6 +699,8 @@ extern int fdatasync(int fildes);
 
 #undef SIZEOF_INT8
 #undef SIZEOF_UINT8
+#undef SIZEOF_INT64
+#undef SIZEOF_UINT64
 
 /*
  *------------------------------------------------------------------------
