Index: src/backend/utils/adt/selfuncs.c
===================================================================
RCS file: /projects/cvsroot/pgsql/src/backend/utils/adt/selfuncs.c,v
retrieving revision 1.233
diff -c -r1.233 selfuncs.c
*** src/backend/utils/adt/selfuncs.c	21 Apr 2007 21:01:45 -0000	1.233
--- src/backend/utils/adt/selfuncs.c	2 May 2007 20:38:58 -0000
***************
*** 3152,3157 ****
--- 3152,3165 ----
  #else
  		xfrmlen = strxfrm(NULL, val, 0);
  #endif
+ #ifdef WIN32
+ 		/* On win32, if strxfrm fails (for example in UTF8 encoding, since
+ 		 * it's not properly supported), return the original string instead
+ 		 * of trying to allocate 2Gb memory.
+ 		 */
+ 		if (xfrmlen >= INT_MAX)
+ 			return val;
+ #endif
  		xfrmstr = (char *) palloc(xfrmlen + 1);
  		xfrmlen2 = strxfrm(xfrmstr, val, xfrmlen + 1);
  		Assert(xfrmlen2 <= xfrmlen);