async related heap allocations are not detected

[cristianiorga]

Just adding the async keyword to a function adds two heap allocations to that function. One is the state machine and one is the task method builder. Example: https://sharplab.io/#v2:EYLgxg9gTgpgtADwGwBY4AcoQGYEsA2MAJgDREgDUAPgAIBMAjALABQNAzAAT2cDCnAb1acR3LjQAc3FJwCyACgCUg4aIC+rNUA=

Not mentioning the Task/Task< T > allocations.

None of these are highlighted.

[cezarypiatek]

The state machine is a class only when the "Debug and Continue" option is enabled during the compilation, otherwise it's a struct and it's allocated on the stack. Please take a look on this thread to get more detailed explanation https://stackoverflow.com/questions/33871181/why-are-async-state-machines-classes-and-not-structs-in-roslyn