$ unset DISPLAY; xclip Error: Can't open display: (null) $ tail -1 /var/log/messages Nov 18 11:53:55 mimine xclip: vfprintf %s NULL in "Error: Can't open display: %s "
ok? Index: Makefile =================================================================== RCS file: /var/cvs/ports/x11/xclip/Makefile,v retrieving revision 1.15 diff -u -p -r1.15 Makefile --- Makefile 13 Sep 2016 20:13:38 -0000 1.15 +++ Makefile 18 Nov 2017 10:56:55 -0000 @@ -4,6 +4,7 @@ COMMENT= command line interface to X se GH_ACCOUNT= astrand GH_PROJECT= xclip GH_TAGNAME= 0.13 +REVISION= 0 CATEGORIES= x11 MAINTAINER= Dmitrij D. Czarkoff <czark...@openbsd.org> Index: patches/patch-xcprint_c =================================================================== RCS file: patches/patch-xcprint_c diff -N patches/patch-xcprint_c --- /dev/null 1 Jan 1970 00:00:00 -0000 +++ patches/patch-xcprint_c 18 Nov 2017 10:55:49 -0000 @@ -0,0 +1,19 @@ +$OpenBSD$ + +Avoid printf "%s" NULL + +Index: xcprint.c +--- xcprint.c.orig ++++ xcprint.c +@@ -86,7 +86,10 @@ errxdisplay(char *display) + if (display == NULL) + display = getenv("DISPLAY"); + +- fprintf(stderr, "Error: Can't open display: %s\n", display); ++ if (display == NULL || *display == '\0') ++ fprintf(stderr, "Error: Can't open display\n"); ++ else ++ fprintf(stderr, "Error: Can't open display: %s\n", display); + exit(EXIT_FAILURE); + } +