Empty SCC annotations makes profiling tools fail

[fpringle]

The SCC annotation "" in Network.Socket.Shutdown leads to profiling output with a cost centre name. This will cause the ghc-prof profile parser to fail, which in turn affects tools depending on ghc-prof such as profiteur, profiterole and ghcprofview.

Example .prof output:

gracefulClose  Network.Socket.Shutdown   Network/Socket/Shutdown.hs:(50,1)-(78,18)       63947           0    0.0    0.0     0.0    0.0
               Network.Socket.Shutdown   Network/Socket/Shutdown.hs:60:34-48             63948           0    0.0    0.0     0.0    0.0

[kazu-yamamoto]

Thanks.
This SCC was included accidently.
I will remove it in the next version.

[kazu-yamamoto]

Fixed via 0505db5.
This will be included the next major version (v3.2) which will be released soon.