sys-libs/readline: add upstream patch for excessive history memory al…

…locs #597006

sys-libs/readline/files/readline-7.0-history-alloclist.patch

@@ -0,0 +1,29 @@
+https://bugs.gentoo.org/597006
+https://lists.gnu.org/archive/html/bug-bash/2016-10/msg00010.html
+
+*** ../bash-4.4/lib/readline/history.c	2015-12-28 13:50:31.000000000 -0500
+--- lib/readline/history.c	2016-09-30 14:28:40.000000000 -0400
+***************
+*** 58,61 ****
+--- 58,63 ----
+  #define DEFAULT_HISTORY_INITIAL_SIZE	502
+
++ #define MAX_HISTORY_INITIAL_SIZE	8192
++ 
+  /* The number of slots to increase the_history by. */
+  #define DEFAULT_HISTORY_GROW_SIZE 50
+***************
+*** 308,312 ****
+  	{
+  	  if (history_stifled && history_max_entries > 0)
+! 	    history_size = history_max_entries + 2;
+  	  else
+  	    history_size = DEFAULT_HISTORY_INITIAL_SIZE;
+--- 310,316 ----
+  	{
+  	  if (history_stifled && history_max_entries > 0)
+! 	    history_size = (history_max_entries > MAX_HISTORY_INITIAL_SIZE)
+! 				? MAX_HISTORY_INITIAL_SIZE
+! 				: history_max_entries + 2;
+  	  else
+  	    history_size = DEFAULT_HISTORY_INITIAL_SIZE;

sys-libs/readline/readline-7.0.ebuild → sys-libs/readline/readline-7.0-r1.ebuild

@@ -54,6 +54,7 @@ src_prepare() {
 	epatch "${FILESDIR}"/${PN}-5.0-no_rpath.patch
 	epatch "${FILESDIR}"/${PN}-6.2-rlfe-tgoto.patch #385091
 	epatch "${FILESDIR}"/${PN}-7.0-headers.patch
+	epatch "${FILESDIR}"/${PN}-7.0-history-alloclist.patch #597006
 
 	# Force ncurses linking. #71420
 	# Use pkg-config to get the right values. #457558