Skip native crash reporting when embedded in Unity - #2231
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mono_handle_native_crash prints a large "Native Crash Reporting" banner, dumps native crash info, and walks the managed stack on every native crash. Unity has its own crash reporting and mono's output is just noise and can cause additional crashes that interrupt the Unity handler. Gate the diagnostic section on the embedding host name: skip it when a non-default host name has been set via mono_unity_set_embeddinghostname, which the standalone mono driver never does. Crash chaining (mono_post_native_crash_handler) still runs unconditionally so the host's handler is invoked.
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| gboolean mono_unity_embedding_host_name_is_set (void) | ||
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| return gEmbeddingHostName != NULL && strcmp (gEmbeddingHostName->str, "mono") != 0; |
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There is another place which checks this, and simply checks for non NULL. That seems wrong. Not saying you need to fix as part of your PR, but the lazy initialization of this value to gEmbeddingHostName does cause some oddity: https://github.com/Unity-Technologies/mono/blob/unity-main/mono/metadata/console-unix.c#L346
joncham-unity
approved these changes
Aug 20, 2026
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mono_handle_native_crash prints a large "Native Crash Reporting" banner, dumps native crash info, and walks the managed stack on every native crash. Unity has its own crash reporting and mono's output is just noise and can cause additional crashes that interrupt the Unity handler.
Gate the diagnostic section on the embedding host name: skip it when a non-default host name has been set via mono_unity_set_embeddinghostname, which the standalone mono driver never does. Crash chaining (mono_post_native_crash_handler) still runs unconditionally so the host's handler is invoked.
Release notes
Internal @bill-holmes:
Mono: Skip mono native crash reporting when embedded in Unity