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Created attachment 15406 [details]
When pdb file compiled by roslyn exists runtime crashes with
mono --debug b.exe
* Assertion at image.c:512, condition `image->heap_guid.size >= 16' not met
at <unknown> <0xffffffff>
at (wrapper managed-to-native) System.AppDomain.LoadAssembly (System.AppDomain,string,System.Security.Policy.Evidence,bool) <0x00012>
at System.AppDomain.LoadSatellite (System.Reflection.AssemblyName,bool) [0x00011] in /private/tmp/source-mono-4.3.2/bockbuild-xamarin/profiles/mono-mac-xamarin/build-root/mono-x86/mcs/class/corlib/System/AppDomain.cs:722
Fixed in mono master/4.4 branch.