https://bugs.gentoo.org/545114

extracted from the upstream change (which had many unrelated commits in one)

From 97bb4678dc03e753290b39bbff30ba2825df9517 Mon Sep 17 00:00:00 2001

From: "Thomas E. Dickey" <dickey@invisible-island.net>

Date: Sun, 7 Dec 2014 03:10:09 +0000

Subject: [PATCH] ncurses 5.9 - patch 20141206

+ modify MKlib_gen.sh to work around change in development version of

  gcc introduced here:

	  https://gcc.gnu.org/ml/gcc-patches/2014-06/msg02185.html

	  https://gcc.gnu.org/ml/gcc-patches/2014-07/msg00236.html

  (reports by Marcus Shawcroft, Maohui Lei).

diff --git a/ncurses/base/MKlib_gen.sh b/ncurses/base/MKlib_gen.sh

index d8cc3c9..b91398c 100755

--- a/ncurses/base/MKlib_gen.sh

+++ b/ncurses/base/MKlib_gen.sh

@@ -474,11 +474,22 @@ sed -n -f $ED1 \

 	-e 's/gen_$//' \

 	-e 's/  / /g' >>$TMP

+cat >$ED1 <<EOF

+s/  / /g

+s/^ //

+s/ $//

+s/P_NCURSES_BOOL/NCURSES_BOOL/g

+EOF

+

+# A patch discussed here:

+#	https://gcc.gnu.org/ml/gcc-patches/2014-06/msg02185.html

+# introduces spurious #line markers.  Work around that by ignoring the system's

+# attempt to define "bool" and using our own symbol here.

+sed -e 's/bool/P_NCURSES_BOOL/g' $TMP > $ED2

+cat $ED2 >$TMP

+

 $preprocessor $TMP 2>/dev/null \

-| sed \

-	-e 's/  / /g' \

-	-e 's/^ //' \

-	-e 's/_Bool/NCURSES_BOOL/g' \

+| sed -f $ED1 \

 | $AWK -f $AW2 \

 | sed -f $ED3 \

 | sed \