Bug 65123

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; }