[Webkit-unassigned] [Bug 137239] New: REGRESSION (r173272): Crash in ResourceResponse::platformSuggestedFilename() when called on the null response

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=137239

           Summary: REGRESSION (r173272): Crash in
                    ResourceResponse::platformSuggestedFilename() when
                    called on the null response
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: Regression
          Severity: Normal
          Priority: P1
         Component: Platform
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mitz at webkit.org
                CC: ap at webkit.org, koivisto at iki.fi


Networking crashed in ResourceResponse::platformSuggestedFilename(). Here’s the top of the backtrace

* thread #1: tid = 0x299351, 0x000000010818463b CFNetwork`URLResponse::createFilenameFromResponseHeaders() + 7, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x60)
    frame #0: 0x000000010818463b CFNetwork`URLResponse::createFilenameFromResponseHeaders() + 7
    frame #1: 0x00000001081846a0 CFNetwork`URLResponse::copySuggestedFilename() + 42
  * frame #2: 0x000000010f93ed2e WebCore`WebCore::ResourceResponse::platformSuggestedFilename(this=0x00007fff58e577b8) const + 46 at ResourceResponseCFNet.cpp:123
    frame #3: 0x000000010f93ab5c WebCore`WebCore::ResourceResponseBase::suggestedFilename(this=0x00007fff58e577b8) const + 28 at ResourceResponseBase.cpp:225
    frame #4: 0x000000010f93d249 WebCore`WebCore::ResourceResponseBase::compare(a=0x00007fff58e577b8, b=0x00007f89bc00c290) + 313 at ResourceResponseBase.cpp:577
    frame #5: 0x000000010de41e5d WebCore`WebCore::operator==(a=0x00007fff58e577b8, b=0x00007f89bc00c290) + 29 at ResourceResponseBase.h:196
    frame #6: 0x000000010de41dcd WebCore`WebCore::operator!=(a=0x00007fff58e577b8, b=0x00007f89bc00c290) + 29 at ResourceResponseBase.h:197
    frame #7: 0x000000010de41be8 WebCore`WebCore::AuthenticationChallengeBase::compare(a=0x00007fff58e57760, b=0x00007f89bc00c238) + 328 at AuthenticationChallengeBase.cpp:102
    frame #8: 0x000000010f91c74d WebCore`WebCore::operator==(a=0x00007fff58e57760, b=0x00007f89bc00c238) + 29 at AuthenticationChallengeBase.h:65
    frame #9: 0x000000010f919f5d WebCore`WebCore::operator!=(a=0x00007fff58e57760, b=0x00007f89bc00c238) + 29 at AuthenticationChallengeBase.h:66
    frame #10: 0x000000010f918370 WebCore`WebCore::ResourceHandle::receivedCancellation(this=0x00007f89bb0101b0, 

The this object in frame #2 is the null ResourceResponse.

This is new in http://trac.webkit.org/r173272, the fix for bug 136534.

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