XdmcpFatal uses the format specifier %*.*s, which vpnprintf() doesn't
understand, which causes a backtrace and prevents the reason for the XDMCP
failure being logged.
See also:
https://bugs.freedesktop.org/show_bug.cgi?id=66862https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=758574
"%*.*s" is also currently used in a few other places, so teach vpnprintf() how
to handle it
$ fgrep -r "%*.*s" *
hw/dmx/config/scanner.l: fprintf(stderr, "parse error on line %d at token \"%*.*s\"\n",
hw/dmx/dmxlog.c: ErrorF("(%s) dmx[i%d/%*.*s]: ", type,
hw/dmx/input/dmxinputinit.c: dmxLogCont(dmxInfo, "\t[i%d/%*.*s",
os/access.c: ErrorF("Xserver: siAddrMatch(): type = %s, value = %*.*s -- %s\n",
os/access.c: ("Xserver: siCheckAddr(): type = %s, value = %*.*s, len = %d -- %s\n",
os/xdmcp.c: FatalError("XDMCP fatal error: %s %*.*s\n", type,
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Colin Harrison <colin.harrison@virgin.net>
d3080d421b