[Webkit-unassigned] [Bug 200686] New: Non-trivially sized wasm applications crash safari on iPad OS 13

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=200686

            Bug ID: 200686
           Summary: Non-trivially sized wasm applications crash safari on
                    iPad OS 13
           Product: WebKit
           Version: Other
          Hardware: iPhone / iPad
                OS: Other
            Status: NEW
          Severity: Blocker
          Priority: P2
         Component: WebAssembly
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: walter at kognito.com

Essentially a regression on the partial fix for https://bugs.webkit.org/show_bug.cgi?id=181723 (Unhandled Promise Rejection: Error: Out of executable memory in function at index)

To reproduce with any beta of iPad OS 13:
1) Navigate with Safari to https://simulations.kognito.com/changetalk/dev
2) Notice the compiler crash immediately when attempting to load

For clarity, iOS 12.2, 12.3, 12.4 all function correctly.  Any version *before* 12.2 will result in the same error that currently happens in iPad OS 13.  Let me know if there's any other information or test case you need from me.

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