From: Simon Marlow <simonmar@microsoft.com>
Date: Wed, 20 Feb 2008 14:12:09 +0000 (+0000)
Subject: mention explicitly that hIsEOF may block
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;ds=sidebyside;h=a26371a343b1c153e0b13cb5ac47e123b43c8d18;p=ghc-base.git

mention explicitly that hIsEOF may block
---

diff --git a/GHC/Handle.hs b/GHC/Handle.hs
index e175b12..8a79efa 100644
--- a/GHC/Handle.hs
+++ b/GHC/Handle.hs
@@ -1212,6 +1212,9 @@ hSetFileSize handle size =
 -- 'True' if no further input can be taken from @hdl@ or for a
 -- physical file, if the current I\/O position is equal to the length of
 -- the file.  Otherwise, it returns 'False'.
+--
+-- NOTE: 'hIsEOF' may block, because it is the same as calling
+-- 'hLookAhead' and checking for an EOF exception.
 
 hIsEOF :: Handle -> IO Bool
 hIsEOF handle =