From: Simon Marlow <simonmar@microsoft.com>
Date: Mon, 18 Feb 2008 12:29:08 +0000 (+0000)
Subject: getTemporaryDirectory: be more precise when catching exns from getEnv
X-Git-Tag: 2008-05-28~1
X-Git-Url: http://git.megacz.com/?p=haskell-directory.git;a=commitdiff_plain;h=29fd272657d1c13500e7cd5f670aadc8ed41c445

getTemporaryDirectory: be more precise when catching exns from getEnv
---

diff --git a/System/Directory.hs b/System/Directory.hs
index 80a20ee..d705c0d 100644
--- a/System/Directory.hs
+++ b/System/Directory.hs
@@ -1027,7 +1027,10 @@ getTemporaryDirectory = do
      r <- c_GetTempPath (fromIntegral long_path_size) pPath
      peekCString pPath
 #else
-  catch (getEnv "TMPDIR") (\ex -> return "/tmp")
+  getEnv "TMPDIR"
+    `catch` \ex -> case ex of
+                     IOException e | isDoesNotExistError e -> return "/tmp"
+                     _ -> throw ex
 #endif
 
 #if defined(mingw32_HOST_OS)