Portability: need special runes for read() returning EIO under job

  control systems.

1 files changed, 1 insertions, 0 deletions

diff --git a/rc.h b/rc.h
index f582bd4..1ed5a07 100644
--- a/rc.h
+++ b/rc.h
@@ -305,6 +305,7 @@ extern void restoreblock(Block *);
 /* open.c */
 extern int rc_open(const char *, redirtype);
 extern bool makeblocking(int);
+extern bool makesamepgrp(int);
 
 /* print.c */
 /*