Backpatch to 8.1.X fix for to_timestamp() where "PM/AM" specification

was eating too much user input, producing incorrect results.

src/backend/utils/adt/formatting.c

@@ -1,7 +1,7 @@
 /* -----------------------------------------------------------------------
  * formatting.c
  *
- * $PostgreSQL: pgsql/src/backend/utils/adt/formatting.c,v 1.101.2.2 2005/12/03 16:45:23 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/formatting.c,v 1.101.2.3 2006/09/04 19:29:18 momjian Exp $
  *
  *
  *	 Portions Copyright (c) 1999-2005, PostgreSQL Global Development Group
@@ -1740,7 +1740,7 @@ dch_time(int arg, char *inout, int suf, bool is_to_char, bool is_interval,
 					tmfc->am = TRUE;
 				else
 					AMPM_ERROR;
-				return strlen(p_inout);
+				return strlen(P_M_STR);
 			}
 			break;
 		case DCH_AM:
@@ -1759,7 +1759,7 @@ dch_time(int arg, char *inout, int suf, bool is_to_char, bool is_interval,
 					tmfc->am = TRUE;
 				else
 					AMPM_ERROR;
-				return strlen(p_inout);
+				return strlen(PM_STR);
 			}
 			break;
 		case DCH_a_m:
@@ -1778,7 +1778,7 @@ dch_time(int arg, char *inout, int suf, bool is_to_char, bool is_interval,
 					tmfc->am = TRUE;
 				else
 					AMPM_ERROR;
-				return strlen(p_inout);
+				return strlen(p_m_STR);
 			}
 			break;
 		case DCH_am:
@@ -1797,7 +1797,7 @@ dch_time(int arg, char *inout, int suf, bool is_to_char, bool is_interval,
 					tmfc->am = TRUE;
 				else
 					AMPM_ERROR;
-				return strlen(p_inout);
+				return strlen(pm_STR);
 			}
 			break;
 		case DCH_HH: