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Deprecate ForceEnc: remove implicit debugger-attach EnC enablement, migrate to DOTNET_MODIFIABLE_ASSEMBLIES #130495

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Deprecate ForceEnc: remove implicit debugger-attach EnC enablement, migrate to DOTNET_MODIFIABLE_ASSEMBLIES #130495

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839f608
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Copilot Jul 10, 2026
612984a
Remove CORDebuggerAttached() from IsApplyUpdateSupported; fix Mono er…
Copilot Jul 10, 2026
101c7d1
Merge branch 'main' into copilot/deprecate-forceenc-migrate-dotnet-mo…
rcj1 Jul 10, 2026
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3 changes: 1 addition & 2 deletions src/coreclr/vm/assemblynative.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1443,8 +1443,7 @@ extern "C" BOOL QCALLTYPE AssemblyNative_IsApplyUpdateSupported()
BEGIN_QCALL;

#ifdef FEATURE_METADATA_UPDATER
result = (g_pConfig->ModifiableAssemblies() != MODIFIABLE_ASSM_NONE) &&
(CORDebuggerAttached() || g_pConfig->ModifiableAssemblies() == MODIFIABLE_ASSM_DEBUG);
result = g_pConfig->ModifiableAssemblies() == MODIFIABLE_ASSM_DEBUG;
#endif
Comment on lines 1445 to 1447

END_QCALL;
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4 changes: 2 additions & 2 deletions src/mono/mono/component/hot_reload.c
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Expand Up @@ -398,12 +398,12 @@ assembly_update_supported (MonoImage *image_base, MonoError *error)
{
mono_error_set_invalid_operation (error, "The assembly '%s' cannot be edited or changed, because environment variable DOTNET_MODIFIABLE_ASSEMBLIES is not set", image_base->name);
} else {
mono_error_set_invalid_operation (error, "The assembly '%s' cannot be edited or changed, because environment variable DOTNET_MODIFIABLE_ASSEMBLIES is set to '%s', not 'Debug'", image_base->name, invalid_env_val);
mono_error_set_invalid_operation (error, "The assembly '%s' cannot be edited or changed, because environment variable DOTNET_MODIFIABLE_ASSEMBLIES is set to '%s', not 'debug'", image_base->name, invalid_env_val);
}
g_free (invalid_env_val);
return FALSE;
} else if (modifiable == MONO_MODIFIABLE_ASSM_NONE) {
mono_error_set_invalid_operation (error, "The assembly '%s' cannot be edited or changed, because environment variable DOTNET_MODIFIABLE_ASSEMBLIES is set to 'none', not 'Debug'", image_base->name);
mono_error_set_invalid_operation (error, "The assembly '%s' cannot be edited or changed, because environment variable DOTNET_MODIFIABLE_ASSEMBLIES is set to 'none', not 'debug'", image_base->name);
return FALSE;
} else if (!mono_assembly_is_jit_optimizer_disabled (image_base->assembly)) {
mono_error_set_invalid_operation (error, "The assembly '%s' cannot be edited or changed, because it does not have a System.Diagnostics.DebuggableAttribute with the DebuggingModes.DisableOptimizations flag (editing Release build assemblies is not supported)", image_base->name);
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