Fixes https://github.com/behdad/harfbuzz/issues/297
DEBUG_MSG (CORETEXT, cg_font, "Font CTFontCreateWithGraphicsFont() failed");
return NULL;
}
+
+ /* crbug.com/576941 and crbug.com/625902 and the investigation in the latter
+ * bug indicate that the cascade list reconfiguration occasionally causes
+ * crashes in CoreText on OS X 10.9, thus let's skip this step on older
+ * operating system versions. */
+ if (&CTGetCoreTextVersion != NULL && CTGetCoreTextVersion() < kCTVersionNumber10_10)
+ return ct_font;
+
CFURLRef original_url = (CFURLRef)CTFontCopyAttribute(ct_font, kCTFontURLAttribute);
/* Create font copy with cascade list that has LastResort first; this speeds up CoreText