From 6b374f6daa4d35d28de14bf185c19df2bcf3a02d Mon Sep 17 00:00:00 2001
From: Ingo Schwarze <schwarze@openbsd.org>
Date: Sat, 11 Mar 2017 16:04:18 +0000
Subject: test infinite recursion in eqn(7) "define" statements

---
 regress/eqn/define/Makefile           |  4 ++--
 regress/eqn/define/infinite.in        | 30 ++++++++++++++++++++++++++++++
 regress/eqn/define/infinite.out_ascii | 15 +++++++++++++++
 regress/eqn/define/infinite.out_lint  |  4 ++++
 4 files changed, 51 insertions(+), 2 deletions(-)
 create mode 100644 regress/eqn/define/infinite.in
 create mode 100644 regress/eqn/define/infinite.out_ascii
 create mode 100644 regress/eqn/define/infinite.out_lint

diff --git a/regress/eqn/define/Makefile b/regress/eqn/define/Makefile
index 4be9cf5e..9dfa749c 100644
--- a/regress/eqn/define/Makefile
+++ b/regress/eqn/define/Makefile
@@ -1,6 +1,6 @@
 # $OpenBSD: Makefile,v 1.1 2015/01/28 21:10:28 schwarze Exp $
 
-REGRESS_TARGETS	 = invalid
-LINT_TARGETS	 = invalid
+REGRESS_TARGETS	 = invalid infinite
+LINT_TARGETS	 = invalid infinite
 
 .include <bsd.regress.mk>
diff --git a/regress/eqn/define/infinite.in b/regress/eqn/define/infinite.in
new file mode 100644
index 00000000..f37602fb
--- /dev/null
+++ b/regress/eqn/define/infinite.in
@@ -0,0 +1,30 @@
+.Dd March 11, 2017
+.Dt DEFINE-INFINITE 1
+.Os OpenBSD
+.Sh NAME
+.Nm define-infinite
+.Nd infinite recursion in define statements
+.Sh DESCRIPTION
+alone:
+.EQ
+define key 'key' key
+.EN
+eol
+.Pp
+leading position:
+.EQ
+define key 'key suffix' key
+.EN
+eol
+.Pp
+middle position:
+.EQ
+define key 'prefix key suffix' key
+.EN
+eol
+.Pp
+trailing position:
+.EQ
+define key 'prefix key' key
+.EN
+eol
diff --git a/regress/eqn/define/infinite.out_ascii b/regress/eqn/define/infinite.out_ascii
new file mode 100644
index 00000000..772d526b
--- /dev/null
+++ b/regress/eqn/define/infinite.out_ascii
@@ -0,0 +1,15 @@
+DEFINE-INFINITE(1)          General Commands Manual         DEFINE-INFINITE(1)
+
+NNAAMMEE
+     ddeeffiinnee--iinnffiinniittee - infinite recursion in define statements
+
+DDEESSCCRRIIPPTTIIOONN
+     alone: eol
+
+     leading position: eol
+
+     middle position: eol
+
+     trailing position: eol
+
+OpenBSD                         March 11, 2017                         OpenBSD
diff --git a/regress/eqn/define/infinite.out_lint b/regress/eqn/define/infinite.out_lint
new file mode 100644
index 00000000..cb5a0048
--- /dev/null
+++ b/regress/eqn/define/infinite.out_lint
@@ -0,0 +1,4 @@
+mandoc: infinite.in:9:1: ERROR: input stack limit exceeded, infinite loop?
+mandoc: infinite.in:15:1: ERROR: input stack limit exceeded, infinite loop?
+mandoc: infinite.in:21:1: ERROR: input stack limit exceeded, infinite loop?
+mandoc: infinite.in:27:1: ERROR: input stack limit exceeded, infinite loop?
-- 
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