$NetBSD$ We need to call XChangeProperty(..., 32, ...) with an object aligned as long. --- src/video/x11/SDL_x11video.c.orig 2012-02-14 22:26:01.000000000 +0000 +++ src/video/x11/SDL_x11video.c 2012-02-14 22:53:45.000000000 +0000 @@ -418,16 +418,21 @@ } { - pid_t pid = getpid(); + union align_pid { + pid_t pid; + long dummy; + } a_pid; + + a_pid.pid = getpid(); char hostname[256]; - if (pid > 0 && gethostname(hostname, sizeof(hostname)) > -1) { + if (a_pid.pid > 0 && gethostname(hostname, sizeof(hostname)) > -1) { Atom _NET_WM_PID = XInternAtom(SDL_Display, "_NET_WM_PID", False); Atom WM_CLIENT_MACHINE = XInternAtom(SDL_Display, "WM_CLIENT_MACHINE", False); hostname[sizeof(hostname)-1] = '\0'; XChangeProperty(SDL_Display, WMwindow, _NET_WM_PID, XA_CARDINAL, 32, - PropModeReplace, (unsigned char *)&pid, 1); + PropModeReplace, (unsigned char *)&(a_pid.pid), 1); XChangeProperty(SDL_Display, WMwindow, WM_CLIENT_MACHINE, XA_STRING, 8, PropModeReplace, (unsigned char *)hostname, SDL_strlen(hostname)); }