[Webkit-unassigned] [Bug 236941] New: [QuickLook] WKPasswordView crash when re-enter password.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=236941

            Bug ID: 236941
           Summary: [QuickLook] WKPasswordView crash when re-enter
                    password.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: iPhone / iPad
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: yianzhou2 at gmail.com
                CC: kkinnunen at apple.com

Created attachment 452692

  --> https://bugs.webkit.org/attachment.cgi?id=452692&action=review

backtrace

The way to reproduce:

1. Use iPhone WKWebView to open a document need password.
2. When the WKPasswordView has shown, enter the right password. Now the WebKit is about to navigate.
3. Enter the password again immediately. Crash happens with "EXC_BAD_ACCESS".

There is a property in WKPasswordView: `@property (nonatomic, copy) void (^userDidEnterPassword)(NSString *);`

Things the block `userDidEnterPassword` captured were released after the user enter the right password. If the user enter the password again in a short time, execute the `userDidEnterPassword` block again triggered the "EXC_BAD_ACCESS" crash.

Attachment is the backtrace.

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