emacs-27 cdf8c31: Extend workaround for Cygwin O_PATH bug

[Ken Brown]

branch: emacs-27
commit cdf8c31844263312aaf08527ce251edb32c5819c
Author: Ken Brown <address@hidden>
Commit: Ken Brown <address@hidden>

    Extend workaround for Cygwin O_PATH bug
    
    * configure.ac (HAVE_CYGWIN_O_PATH_BUG): Extend to Cygwin versions
    3.1.0 through 3.1.2.  (Bug#39371)
---
 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 02ec57e..3c47da6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5751,9 +5751,9 @@ case $opsys,$emacs_uname_r in
     AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
            echo
           ;;
-  cygwin,3.0.[[0-7]]'('*)
+  cygwin,3.0.[[0-7]]'('* | cygwin,3.1.[[0-2]]'('*)
     AC_DEFINE([HAVE_CYGWIN_O_PATH_BUG], 1,
-      [Define to 1 if opening a FIFO with O_PATH causes a hang.]);;
+      [Define to 1 if opening a FIFO, socket, or symlink with O_PATH is 
buggy.]);;
 esac
 
 # Remove any trailing slashes in these variables.