From c9f1b04651dae16e33f0aa8974c5122e26b362ae Mon Sep 17 00:00:00 2001
From: Chet Ramey <chet.ramey@case.edu>
Date: Mon, 29 Jan 2018 16:04:20 -0500
Subject: [PATCH] Bash-4.4 patch 16

---
 lib/sh/zread.c | 23 +++++++++--------------
 patchlevel.h   |  2 +-
 2 files changed, 10 insertions(+), 15 deletions(-)

diff --git a/lib/sh/zread.c b/lib/sh/zread.c
index 868f9705..496f20b8 100644
--- a/lib/sh/zread.c
+++ b/lib/sh/zread.c
@@ -37,7 +37,10 @@ extern int errno;
 #  define SEEK_CUR 1
 #endif
 
+extern int executing_builtin;
+
 extern void check_signals_and_traps (void);
+extern void check_signals (void);
 extern int signal_is_trapped (int);
 
 /* Read LEN bytes from FD into BUF.  Retry the read on EINTR.  Any other
@@ -50,21 +53,13 @@ zread (fd, buf, len)
 {
   ssize_t r;
 
-#if 0
-#if defined (HAVE_SIGINTERRUPT)
-  if (signal_is_trapped (SIGCHLD))
-    siginterrupt (SIGCHLD, 1);
-#endif
-#endif
-
   while ((r = read (fd, buf, len)) < 0 && errno == EINTR)
-    check_signals_and_traps ();	/* XXX - should it be check_signals()? */
-
-#if 0 
-#if defined (HAVE_SIGINTERRUPT)
-  siginterrupt (SIGCHLD, 0);
-#endif
-#endif
+    /* XXX - bash-5.0 */
+    /* We check executing_builtin and run traps here for backwards compatibility */
+    if (executing_builtin)
+      check_signals_and_traps ();	/* XXX - should it be check_signals()? */
+    else
+      check_signals ();
 
   return r;
 }
diff --git a/patchlevel.h b/patchlevel.h
index 6e9ed3fc..9074f4dd 100644
--- a/patchlevel.h
+++ b/patchlevel.h
@@ -25,6 +25,6 @@
    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
    looks for to find the patch level (for the sccs version string). */
 
-#define PATCHLEVEL 15
+#define PATCHLEVEL 16
 
 #endif /* _PATCHLEVEL_H_ */
-- 
2.13.6