[Webkit-unassigned] [Bug 179106] New: Unexpected "RangeError: Maximum call stack size exceeded."

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=179106

            Bug ID: 179106
           Summary: Unexpected "RangeError: Maximum call stack size
                    exceeded."
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebAssembly
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fumiya.chiba at nifty.com

Tested Version       : Release 42 (Safari 11.1, WebKit 13605.1.10) 
URLs (if applicable) : http://demo.tombo.io/
Other browsers tested:
        Safari (11.0.1): OK
        Chrome (62.0.3202.75): OK
        Chrome Canary (64.0.3254.0): FAIL with another exception
        Firefox (56.0.2): OK
        Firefox Nightly (58.0a1): OK

Step to reproduce:

Push play button on center.

Expected result:

Game launches without exceptions.
cf. http://demo.tombo.io/launch-image/launch-image-320x480.png

Actual result:

Unexpected exception, "RangeError: Maximum call stack size exceeded.", is thrown, but stack is not so deep.


Additional information:
- Only wasm version causes the exception.
- Built with patched emscripten, for mainly Objective-C support.
- Using dynamic link feature of emscripten (loading two .wasm files)
- Seems JS function call from wasm function cause this error (not always)

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