X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=hacks%2Fflame.c;h=9d3543c1482db113964cd2b02353064800c75e50;hb=14463b6ad1ab1ccf81f9c33350b048e410ba94cb;hp=0cc7f65970fb5f0f8e1ca7d790319e97fb97504c;hpb=f65151994eba80ecabcdac6eef6fa0dde7e2d45b;p=xscreensaver

diff --git a/hacks/flame.c b/hacks/flame.c
index 0cc7f659..9d3543c1 100644
--- a/hacks/flame.c
+++ b/hacks/flame.c
@@ -52,6 +52,8 @@
 #include <math.h>
 #include "screenhack.h"
 
+#include <signal.h>		/* so we can ignore SIGFPE */
+
 #define POINT_BUFFER_SIZE 10
 #define MAXLEV 4
 #define MAXKINDS  10
@@ -100,6 +102,15 @@ init_flame (Display *dpy, Window window)
   XGCValues gcv;
   XWindowAttributes xgwa;
   Colormap cmap;
+
+#if defined(SIGFPE) && defined(SIG_IGN)
+  /* No doubt a better fix would be to track down where the NaN is coming
+     from, and code around that; but this should do.  Apparently most systems
+     (Linux, Solaris, Irix, ...) ignore FPE by default -- but FreeBSD dumps
+     core by default. */
+  signal (SIGFPE, SIG_IGN);
+#endif
+
   XGetWindowAttributes (dpy, window, &xgwa);
   width = xgwa.width;
   height = xgwa.height;
@@ -361,9 +372,12 @@ flame (Display *dpy, Window window)
 }
 
 
-#ifdef __hpux
+#if defined(__hpux) && defined(PLOSS)
 /* I don't understand why this is necessary, but I'm told that this program
    does nothing at all on HP-sUX without it.
+
+   I'm further told that HPUX 11.0 doesn't define PLOSS, and works ok without
+   this section.  Go figure.
  */
 #undef random
 #undef srandom