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discardable async procs are now an error (#14176)

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* add discard warning in manual
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hlaaftana 2020-05-01 10:49:13 +03:00 • committed by GitHub
commit 9b01c6cf48
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4 changed files with 26 additions and 10 deletions
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tests/async/tdiscardableproc.nim Normal file
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@ -0,0 +1,9 @@
discard """
errmsg: "Cannot make async proc discardable. Futures have to be checked with `asyncCheck` instead of discarded"
"""
import async
proc foo {.async, discardable.} = discard
foo()