From: Simon Marlow <marlowsd@gmail.com>
Date: Wed, 15 Sep 2010 14:18:09 +0000 (+0000)
Subject: errno corresponding to ERROR_NO_DATA should be EPIPE (non-threaded RTS)
X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=commitdiff_plain;h=0cbb1f34579da2b3ba8e199c3a95f6312710659f

errno corresponding to ERROR_NO_DATA should be EPIPE (non-threaded RTS)
---

diff --git a/rts/win32/IOManager.c b/rts/win32/IOManager.c
index 81dedda..c9a759f 100644
--- a/rts/win32/IOManager.c
+++ b/rts/win32/IOManager.c
@@ -16,6 +16,7 @@
 #include <io.h>
 #include <winsock.h>
 #include <process.h>
+#include <errno.h>
 
 /*
  * Internal state maintained by the IO manager.
@@ -181,7 +182,15 @@ IOWorkerProc(PVOID param)
 			len = write(work->workData.ioData.fd,
 				    work->workData.ioData.buf,
 				    work->workData.ioData.len);
-			if (len == -1) { errCode = errno; }
+			if (len == -1) {
+                            errCode = errno;
+                            // write() gets errno wrong for
+                            // ERROR_NO_DATA, we have to fix it here:
+                            if (errCode == EINVAL &&
+                                GetLastError() == ERROR_NO_DATA) {
+                                errCode = EPIPE;
+                            }
+                        }
 		    }
 		    complData = work->workData.ioData.buf;
 		    fd = work->workData.ioData.fd;