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-rw-r--r--gfx/cairo/buggy-repeat.patch39
1 files changed, 39 insertions, 0 deletions
diff --git a/gfx/cairo/buggy-repeat.patch b/gfx/cairo/buggy-repeat.patch
new file mode 100644
index 0000000000..3d27b8f9b7
--- /dev/null
+++ b/gfx/cairo/buggy-repeat.patch
@@ -0,0 +1,39 @@
+diff --git a/gfx/cairo/cairo/src/cairo-xlib-display.c b/gfx/cairo/cairo/src/cairo-xlib-display.c
+--- a/gfx/cairo/cairo/src/cairo-xlib-display.c
++++ b/gfx/cairo/cairo/src/cairo-xlib-display.c
+@@ -216,6 +216,8 @@ _cairo_xlib_display_get (Display *dpy)
+ XExtCodes *codes;
+ int major_unused, minor_unused;
+
++ static int buggy_repeat_force = -1;
++
+ /* There is an apparent deadlock between this mutex and the
+ * mutex for the display, but it's actually safe. For the
+ * app to call XCloseDisplay() while any other thread is
+@@ -308,6 +310,26 @@ _cairo_xlib_display_get (Display *dpy)
+ if (VendorRelease (dpy) <= 40500000)
+ display->buggy_repeat = TRUE;
+ }
++
++ /* XXX workaround; see https://bugzilla.mozilla.org/show_bug.cgi?id=413583 */
++ /* If buggy_repeat_force == -1, then initialize.
++ * - set to -2, meaning "nothing was specified", and we trust the above detection.
++ * - if MOZ_CAIRO_BUGGY_REPEAT is '0' (exactly), then force buggy repeat off
++ * - if MOZ_CAIRO_BUGGY_REPEAT is '1' (exactly), then force buggy repeat on
++ */
++ if (buggy_repeat_force == -1) {
++ const char *flag = getenv("MOZ_CAIRO_FORCE_BUGGY_REPEAT");
++
++ buggy_repeat_force = -2;
++
++ if (flag && flag[0] == '0')
++ buggy_repeat_force = 0;
++ else if (flag && flag[0] == '1')
++ buggy_repeat_force = 1;
++ }
++
++ if (buggy_repeat_force != -2)
++ display->buggy_repeat = (buggy_repeat_force == 1);
+
+ display->next = _cairo_xlib_display_list;
+ _cairo_xlib_display_list = display;