*** pgsql/src/interfaces/ecpg/preproc/ecpg.c~	2010-04-03 18:15:53.000000000 +0200
--- pgsql/src/interfaces/ecpg/preproc/ecpg.c	2010-04-03 18:15:53.000000000 +0200
***************
*** 469,474 ****
--- 469,482 ----
  					fclose(yyin);
  				if (out_option == 0 && yyout != stdout)
  					fclose(yyout);
+ 				/*
+ 				 * If there was an error, delete the output file.
+ 				 */
+ 				if (ret_value != 0)
+ 				{
+ 					if (strcmp(output_filename, "-") != 0 && unlink(output_filename) != 0)
+ 						fprintf(stderr, _("could not remove output file \"%s\"\n"), output_filename);
+ 				}
  			}
  
  			if (output_filename && out_option == 0)