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-rw-r--r--doc/posix-functions/sleep.texi3
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/posix-functions/sleep.texi b/doc/posix-functions/sleep.texi
index 9a7a74f0bd..6df8693842 100644
--- a/doc/posix-functions/sleep.texi
+++ b/doc/posix-functions/sleep.texi
@@ -15,6 +15,9 @@ mingw (2005 or newer).
This function takes milliseconds as argument and returns @code{void} on some
platforms:
mingw (2005 and older).
+@item
+This function cannot sleep longer than 49.7 days on some platforms:
+Cygwin 1.5.x.
@end itemize
Portability problems not fixed by Gnulib: