[Webkit-unassigned] [Bug 65123] New: Font loading during layout can cause layout code to be re-entered via resource load delegate

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=65123

           Summary: Font loading during layout can cause layout code to be
                    re-entered via resource load delegate
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mitz at webkit.org


Font loading during layout can cause layout code to be re-entered via resource load delegate

Here is an example:

#import <Foundation/Foundation.h>
#import <WebKit/WebKit.h>

@interface ResourceLoadDelegate : NSObject {
}
@end

@implementation ResourceLoadDelegate

- (NSURLRequest *)webView:(WebView *)sender resource:(id)identifier willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)redirectResponse fromDataSource:(WebDataSource *)dataSource
{
    if ([[[request URL] path] hasSuffix:@".ttf"]) {
        DOMElement *documentElement = [[[sender mainFrame] DOMDocument] documentElement];
        [[documentElement style] setProperty:@"display" value:@"none" priority:@""];
        [documentElement offsetTop];
    }
    return request;
}

@end

int main (int argc, const char * argv[])
{
    @autoreleasepool {        
        WebView *webView = [[WebView alloc] initWithFrame:NSZeroRect frameName:nil groupName:[[NSBundle mainBundle] bundleIdentifier]];
        ResourceLoadDelegate *delegate = [[ResourceLoadDelegate alloc] init];
        webView.resourceLoadDelegate = delegate;
        [[webView mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.alistapart.com/d/cssatten/heid.html"]]];

        [[NSRunLoop mainRunLoop] run];
    }
    return 0;
}

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