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Votes
0
Found in
2019.4
2019.4.8f1
2020.1
2020.2
Issue ID
1272870
Regression
No
[WebGL] Builds fail when Enable Exceptions is set to Full With Stacktrace
Reproduction steps:
1. Open the user's attached project
2. Make sure that Enable Exceptions is set to Full With Stacktrace in Player Settings
3. Try building for WebGL
Expected result: Build succeeds with no errors
Actual result: Build fails with Emscripten_Win errors
Reproducible with: 2019.4.9f1, 2020.1.4f1, 2020.2.0b1
Couldn't test with: 2018.4 (errors after downgrade)
Note: The issue does not reproduce on a new empty project
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Resolution Note (2020.2.X):
Resolving this issue since a work-around was provided and there is little we can do about it until we switch the new LLVM WASM compiler.
The work-around was to change the users code to generate smaller C# functions by breaking up the Dictionary initialization into smaller sub-function calls. C++ compilers have a hard time compiling very large functions when exception handling is used, due to how it has to wrap every line to catch any potential exceptions. This exception wrapping causes the current version of Emscripten to crash due to the way it compiles exceptions. The new LLVM WASM backend compiler will not have this same issue.