Commit 68ba490d authored by Simon Marlow's avatar Simon Marlow
Browse files

document that readProcess throws an IOError exception if the process

exits with a non-zero exit code. (patch from Judah Jacobson on
parent 1f055b86
......@@ -342,6 +342,9 @@ waitForProcess ph = do
-- Output is returned strictly, so this is not suitable for
-- interactive applications.
-- This function throws an 'IOError' if the process 'ExitCode' is
-- anything other than 'ExitSuccess'.
-- Users of this function should compile with @-threaded@ if they
-- want other Haskell threads to keep running while waiting on
-- the result of readProcess.
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