gfx/cairo/buggy-repeat.patch

   1 diff --git a/gfx/cairo/cairo/src/cairo-xlib-display.c b/gfx/cairo/cairo/src/cairo-xlib-display.c
   2 --- a/gfx/cairo/cairo/src/cairo-xlib-display.c
   3 +++ b/gfx/cairo/cairo/src/cairo-xlib-display.c
   4 @@ -216,6 +216,8 @@ _cairo_xlib_display_get (Display *dpy)
   5      XExtCodes *codes;
   6      int major_unused, minor_unused;
   7
   8 +    static int buggy_repeat_force = -1;
   9 +
  10      /* There is an apparent deadlock between this mutex and the
  11       * mutex for the display, but it's actually safe. For the
  12       * app to call XCloseDisplay() while any other thread is
  13 @@ -308,6 +310,26 @@ _cairo_xlib_display_get (Display *dpy)
  14         if (VendorRelease (dpy) <= 40500000)
  15             display->buggy_repeat = TRUE;
  16      }
  17 +
  18 +    /* XXX workaround; see https://bugzilla.mozilla.org/show_bug.cgi?id=413583 */
  19 +    /* If buggy_repeat_force == -1, then initialize.
  20 +     *    - set to -2, meaning "nothing was specified", and we trust the above detection.
  21 +     *    - if MOZ_CAIRO_BUGGY_REPEAT is '0' (exactly), then force buggy repeat off
  22 +     *    - if MOZ_CAIRO_BUGGY_REPEAT is '1' (exactly), then force buggy repeat on
  23 +     */
  24 +    if (buggy_repeat_force == -1) {
  25 +        const char *flag = getenv("MOZ_CAIRO_FORCE_BUGGY_REPEAT");
  26 +
  27 +        buggy_repeat_force = -2;
  28 +
  29 +        if (flag && flag[0] == '0')
  30 +            buggy_repeat_force = 0;
  31 +        else if (flag && flag[0] == '1')
  32 +            buggy_repeat_force = 1;
  33 +    }
  34 +
  35 +    if (buggy_repeat_force != -2)
  36 +        display->buggy_repeat = (buggy_repeat_force == 1);
  37
  38      display->next = _cairo_xlib_display_list;
  39      _cairo_xlib_display_list = display;