pacman/util: flush terminal input before reading response

Addresses FS#20538

Conflicts:

	src/pacman/util.c

Signed-off-by: Dave Reisner <d@falconindy.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
(cherry picked from commit 9477abc3591905a20acbfe7b8ce7832617d72701)

1 files changed, 3 insertions, 2 deletions

diff --git a/configure.ac b/configure.ac
index c672c66c..f6d5a2c3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -171,7 +171,8 @@ AM_CONDITIONAL([HAVE_LIBFETCH], [test "x$ac_cv_lib_fetch_fetchParseURL" = "xyes"
 # Checks for header files.
 AC_CHECK_HEADERS([fcntl.h glob.h libintl.h locale.h mntent.h string.h \
                   sys/ioctl.h sys/mount.h sys/param.h sys/statvfs.h \
-                  sys/time.h sys/types.h sys/ucred.h syslog.h wchar.h])
+                  sys/time.h sys/types.h sys/ucred.h syslog.h termios.h \
+                  wchar.h])
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_INLINE
@@ -190,7 +191,7 @@ AC_FUNC_GETMNTENT
 AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
 AC_FUNC_MKTIME
 AC_CHECK_FUNCS([geteuid getmntinfo realpath regcomp strcasecmp \
-                strndup strrchr strsep swprintf \
+                strndup strrchr strsep swprintf tcflush \
                 wcwidth uname])
 # For the diskspace code
 FS_STATS_TYPE