[Webkit-unassigned] [Bug 191059] New: There is a memory leak problem in iOS 12 using WKWebview

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=191059

            Bug ID: 191059
           Summary: There is a memory leak problem in iOS 12 using
                    WKWebview
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: iPhone / iPad
                OS: iOS 12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: 936642419 at qq.com

Created attachment 353358

  --> https://bugs.webkit.org/attachment.cgi?id=353358&action=review

Instruments screenshot

When I use instruments profile my app I found a memory leak in wkwebkit,
I just know it about thread lock in JavaScriptCore.
this problem in others iOS version is fine except iOS12.

The following code will have problems in iOS12:

> +    WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init];
> +    WKWebView *webView = [[WKWebView alloc] initWithFrame:CGRectZero configuration:configuration];
> +    [self.view addSubview:webView];

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