[Webkit-unassigned] [Bug 14149] New: multipart/x-mixed-replace responses that switch content-types are not handled properly

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=14149

           Summary: multipart/x-mixed-replace responses that switch content-
                    types are not handled properly
           Product: WebKit
           Version: 522+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Keywords: HasReduction, NeedsRadar
          Severity: Normal
          Priority: P2
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ddkilzer at webkit.org


* SUMMARY
An http response that switches between different content-types is not handled
correctly.  The first example goes from text/plain to text/html to text/plain. 
(This may be related to Bug 4151.)

* STEPS TO REPRODUCE
1. Launch Safari/WebKit.
2. Access CGI script attachment on a web server.

* EXPECTED RESULTS
The URL should display a text/plain page with "1. text/plain", then a text/html
page with "2. text/html", and finally a text/plain page with "3. text/plain".

* ACTUAL RESULTS
On a debug build of WebKit r23528 with Safari 3.0 (522.11) on Mac OS X 10.4.9
(8P135), an assert fires.

On Safari 3.0 (522.11) on Mac OS X 10.4.9 (8P135), it prints "--", then "2.
text/html", then adds a plain text "--" to the page with "2. text/html".

* REGRESSION
Not tested with Safari 2.0.4 (419.3) yet.

* NOTES
This may be related to Bug 4151.

Console output from debug build:

ASSERTION FAILED: m_frame->document()->parsing()
(/path/to/WebKit/WebCore/loader/FrameLoader.cpp:1597 addData)
Segmentation fault

Stack trace from debug build:

Version:        3.0 (522.11)
Build Version:  2
Project Name:   WebBrowser
Source Version: 45221100

PID:    9319
Thread: 0

Exception:  EXC_BAD_ACCESS (0x0001)
Codes:      KERN_INVALID_ADDRESS (0x0001) at 0xbbadbeef

Thread 0 Crashed:
0   com.apple.WebCore           0x0149f1d0 WebCore::FrameLoader::addData(char
const*, int) + 296 (FrameLoader.cpp:1597)
1   com.apple.WebCore           0x0111f6a8 -[WebCoreFrameBridge addData:] + 232
(WebCoreFrameBridge.mm:290)
2   com.apple.WebCore           0x011282dc -[WebCoreFrameBridge
receivedData:textEncodingName:] + 316 (WebCoreFrameBridge.mm:1432)
3   com.apple.WebKit            0x00343aa4 -[WebHTMLRepresentation
finishedLoadingWithDataSource:] + 368 (WebHTMLRepresentation.mm:236)
4   com.apple.WebKit            0x0033a9b8 -[WebDataSource(WebInternal)
_finishedLoading] + 112 (WebDataSource.mm:169)
5   com.apple.WebKit            0x003c7ad0
WebFrameLoaderClient::finishedLoading(WebCore::DocumentLoader*) + 76
6   com.apple.WebCore           0x014939e0
WebCore::FrameLoader::finishedLoadingDocument(WebCore::DocumentLoader*) + 76
(FrameLoader.cpp:2660)
7   com.apple.WebCore           0x014ab6cc
WebCore::DocumentLoader::finishedLoading() + 84 (DocumentLoader.cpp:318)
8   com.apple.WebCore           0x0149cc3c
WebCore::FrameLoader::finishedLoading() + 96 (FrameLoader.cpp:2602)
9   com.apple.WebCore           0x014abd3c
WebCore::MainResourceLoader::didFinishLoading() + 272
(MainResourceLoader.cpp:304)
10  com.apple.WebCore           0x014adeb8
WebCore::ResourceLoader::didFinishLoading(WebCore::ResourceHandle*) + 60
11  com.apple.WebCore           0x01482a60 -[WebCoreResourceHandleAsDelegate
connectionDidFinishLoading:] + 144 (ResourceHandleMac.mm:370)
12  com.apple.Foundation        0x92c1589c
-[NSURLConnection(NSURLConnectionInternal) _sendDidFinishLoadingCallback] + 188
13  com.apple.Foundation        0x92c13b08
-[NSURLConnection(NSURLConnectionInternal) _sendCallbacks] + 556
14  com.apple.Foundation        0x92c13860 _sendCallbacks + 156
15  com.apple.CoreFoundation    0x907df4fc __CFRunLoopDoSources0 + 384
16  com.apple.CoreFoundation    0x907dea2c __CFRunLoopRun + 452
17  com.apple.CoreFoundation    0x907de4ac CFRunLoopRunSpecific + 268
18  com.apple.HIToolbox         0x9329bb20 RunCurrentEventLoopInMode + 264
19  com.apple.HIToolbox         0x9329b1b4 ReceiveNextEventCommon + 380
20  com.apple.HIToolbox         0x9329b020
BlockUntilNextEventMatchingListInMode + 96
21  com.apple.AppKit            0x937a1ae4 _DPSNextEvent + 384
22  com.apple.AppKit            0x937a17a8 -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:] + 116
23  com.apple.Safari            0x00006770 0x1000 + 22384
24  com.apple.AppKit            0x9379dcec -[NSApplication run] + 472
25  com.apple.AppKit            0x9388e87c NSApplicationMain + 452
26  com.apple.Safari            0x0000244c 0x1000 + 5196
27  com.apple.Safari            0x0004f1b0 0x1000 + 319920


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