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using System; class X { public static void Main () { "string".Replace ("abcd", "xyz"); } } 1. csc foo.cs -debug 2. mono --profile=coverage --aot --debug foo.exe 3. mono --debug foo.exe You get NRE crash System.NullReferenceException: Object reference not set to an instance of an object at X.Main () [0x00000] in foo3.cs:7
We probably shouldn't support aot+coverage right now.
I am ok if we abort with some error message
Thinking about it, does not profiling have the same problem?
Profiling doesn't change the generated code, we do ip based sampling.
https://github.com/mono/mono/pull/5881
Fixed.