Function printMixedStruct calls printf with NULL argument. It causes segmentation fault. Please, apply it for 8.3 - 8.1 too.


                        thanks Zdenek
Index: src/backend/utils/misc/help_config.c
===================================================================
RCS file: /zfs_data/cvs_pgsql/cvsroot/pgsql/src/backend/utils/misc/help_config.c,v
retrieving revision 1.19
diff -c -r1.19 help_config.c
*** src/backend/utils/misc/help_config.c	1 Jan 2008 19:45:54 -0000	1.19
--- src/backend/utils/misc/help_config.c	21 Feb 2008 17:48:00 -0000
***************
*** 117,123 ****
  
  		case PGC_STRING:
  			printf("STRING\t%s\t\t\t",
! 				   structToPrint->string.boot_val);
  			break;
  
  		default:
--- 117,123 ----
  
  		case PGC_STRING:
  			printf("STRING\t%s\t\t\t",
! 				   (structToPrint->string.boot_val == NULL) ? "(NULL)" : structToPrint->string.boot_val);
  			break;
  
  		default:
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