+
+ /* 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. Except for the emoji font, where _not_
+ * reconfiguring the cascade list causes CoreText crashes. For details, see
+ * crbug.com/549610 */
+ // 0x00070000 stands for "kCTVersionNumber10_10", see CoreText.h
+ if (&CTGetCoreTextVersion != NULL && CTGetCoreTextVersion() < 0x00070000) {
+ CFStringRef fontName = CTFontCopyPostScriptName (ct_font);
+ bool isEmojiFont = CFStringCompare (fontName, CFSTR("AppleColorEmoji"), 0) == kCFCompareEqualTo;
+ CFRelease (fontName);
+ if (!isEmojiFont)
+ return ct_font;
+ }
+