1 files changed, 55 insertions, 0 deletions
diff --git a/sys/etc/xerpop.x b/sys/etc/xerpop.x
new file mode 100644
index 00000000..a4723508
--- /dev/null
+++ b/sys/etc/xerpop.x
@@ -0,0 +1,55 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<error.h>
+
+# XERPSH -- Push an error handler on the error "stack".  All we really need
+# do is keep track of the number of nested handlers.  If an error condition
+# already exists when we are called, an error has occurred which was not
+# caught, probably because of a missing errchk declaration.
+
+procedure xerpsh()
+
+include	"error.com"
+
+begin
+	if (xerflg)					# error not caught
+	    call erract (EA_FATAL)
+	nhandlers = nhandlers + 1
+	xercod = OK
+end
+
+
+# XERPOP -- Pop an error handler, and return the error status flag (true if
+# an error occurred).
+
+bool procedure xerpop()
+
+bool	error_status
+include	"error.com"
+
+begin
+	nhandlers = nhandlers - 1
+	error_status = xerflg
+	xerflg = false
+
+	return (error_status)
+end
+
+
+# XERPOPI -- Integer version of XERPOP.
+
+int procedure xerpopi()
+
+bool	error_status
+include	"error.com"
+
+begin
+	nhandlers = nhandlers - 1
+	error_status = xerflg
+	xerflg = false
+
+	if (error_status)
+	    return (1)
+	else
+	    return (0)
+end