[Webkit-unassigned] [Bug 141867] New: Crash loading local file with WebPageProxy::loadAlternateHTMLString

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=141867

            Bug ID: 141867
           Summary: Crash loading local file with
                    WebPageProxy::loadAlternateHTMLString
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcatanzaro at igalia.com

WebPageProxy::loadAlternateHTMLString needs to assume read access to the "unreachable file" as well as the file it actually loads, because the unreachable file will get added to the back/forward list, causing us to crash. There is already a cross-platform test for this but in that test the unreachable file is the same as the file with the alternate HTML, so it didn't catch this.

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