File bison-2.3-subpipe.diff of Package bison

--- lib/subpipe.c
+++ lib/subpipe.c
@@ -130,7 +130,7 @@
 	 for execvp.  */
       execvp (argv[0], (char **) argv);
 
-      _exit (errno == ENOENT ? 127 : 126);
+      error((errno == ENOENT ? 127 : 126), errno, "cannot run %s", argv[0]);   
     }
 
   /* Parent.  */