Crash under WebCore::platformDefaultLanguage() when using Arabic language

[Mike Thole]

After choosing the Arabic locale, launching Safari and navigating somewhere will cause a crash:


   1 libobjc.A.dylib                0x7fff82ae8318 objc_msgSend_vtable13 + 0x10
>  2 com.apple.WebCore              0x101e0a5bd WebCore::platformDefaultLanguage() + 0x3d (Language.mm:100)
   3 com.apple.WebCore              0x101e09e38 WebCore::defaultLanguage() + 0x38 (Language.cpp:72)
   4 com.apple.WebKit               0x1012c9cc9 +[NSUserDefaults(WebNSUserDefaultsExtras) _webkit_preferredLanguageCode] + 0x19 (WebNSUserDefaultsExtras.mm:40)
   5 com.apple.WebKit               0x1012fb835 +[WebView(WebPrivate) _standardUserAgentWithApplicationName:] + 0x55 (WebView.mm:550)
   6 com.apple.Safari.framework     0x10020ae15 Safari::SWebView::defaultUserAgent() + 0x47 (SWebView.mac.mm:166)

[Mike Thole]

Created attachment 72863 [details]
Proposed patch

[Alexey Proskuryakov]

Comment on attachment 72863 [details]
Proposed patch

Oops.

[Mike Thole]

Committed revision 71264.

[Darin Adler]

Comment on attachment 72863 [details]
Proposed patch

View in context: https://bugs.webkit.org/attachment.cgi?id=72863&action=review

> WebCore/platform/mac/Language.mm:62
> +    NSString *httpStyleLanguageCode = nil;

It would be clearer to define this just before it’s initialized rather than putting the definition at the top of the function. If you did that it would be clear you need not set it to nil since it’s already initialized in all code paths.

> WebCore/platform/mac/Language.mm:79
> +    }
> +    else

We put the } on the same line as the “else” in WebKit coding style.

[Mike Thole]

Tweaked style per Darin's comments in r71271.

[Alexey Proskuryakov]

<rdar://problem/8644034>