Ensure that instrumentation works with functions that return coroutines. #10

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1. jmalloc

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2. jmalloc

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4. jmalloc commented on Jan 13, 2017

   

   jmalloc

   on Jan 13, 2017

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   The problem is that the tracing code injections a yield statement, changing this non-generator to a generator. This may be a little involved to fix properly, as the instrumentor will need to travserse the AST to look for existing yield statements before outputting the start of the instrumentation code.

   As a workaround, simply annotate the outer function's return value as Generator instead of Coroutine.