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List: gnulib-bug
Subject: poll: add comment
From: Bruno Haible <bruno () clisp ! org>
Date: 2019-06-30 12:49:03
Message-ID: 1876843.p222t3frk3 () omega
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2019-06-30 Bruno Haible <bruno@clisp.org>
poll: Add comment.
* lib/poll.c: Add comment about WSAPoll.
diff --git a/lib/poll.c b/lib/poll.c
index f6de24c..5d9150c 100644
--- a/lib/poll.c
+++ b/lib/poll.c
@@ -76,6 +76,13 @@
#ifdef WINDOWS_NATIVE
+/* Do *not* use the function WSAPoll
+ <https://docs.microsoft.com/en-us/windows/desktop/api/winsock2/nf-winsock2-wsapoll>
+ because there is a bug named "Windows 8 Bugs 309411 - WSAPoll does not
+ report failed connections" that Microsoft won't fix.
+ See Daniel Stenberg: "WASPoll is broken"
+ <https://daniel.haxx.se/blog/2012/10/10/wsapoll-is-broken/>. */
+
/* Here we need the recv() function from Windows, that takes a SOCKET as
first argument, not any possible gnulib override. */
# undef recv
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