Regression test for constant in conditional context

3 files changed, 48 insertions, 2 deletions

diff --git a/regress/usr.bin/xlint/Makefile b/regress/usr.bin/xlint/Makefile
index da9aabffe49..e13514f4657 100644
--- a/regress/usr.bin/xlint/Makefile
+++ b/regress/usr.bin/xlint/Makefile
@@ -1,6 +1,6 @@
-# $OpenBSD: Makefile,v 1.16 2005/12/10 19:19:49 cloder Exp $
+# $OpenBSD: Makefile,v 1.17 2005/12/12 23:37:51 cloder Exp $
 
-TEST_MODULES=	1 2 3 4 5 6 7 8 9 10 12 13
+TEST_MODULES=	1 2 3 4 5 6 7 8 9 10 12 13 14
 LINT=		lint
 LINTFLAGS?=	-chapbx
 
diff --git a/regress/usr.bin/xlint/test-14.c b/regress/usr.bin/xlint/test-14.c
new file mode 100644
index 00000000000..a9e12daaed1
--- /dev/null
+++ b/regress/usr.bin/xlint/test-14.c
@@ -0,0 +1,43 @@
+/*	$OpenBSD: test-14.c,v 1.1 2005/12/12 23:37:51 cloder Exp $	*/
+
+/*
+ * Placed in the public domain by Chad Loder <cloder@openbsd.org>.
+ *
+ * Test lint warnings regarding constant in conditional contexts.
+ */
+
+/* ARGSUSED */
+int
+main(int argc, char *argv[])
+{
+	do {
+		argc++;
+	} while (0);			/* do not warn */
+
+	do {
+		if (argc++)
+			break;
+	} while (1);			/* do not warn */
+
+
+	do {
+		if (argc++)
+			break;
+	} while (2);			/* warn because of 2 */
+
+	if (0) {			/* do not warn */
+		argc++;
+	}
+
+	if (1) {			/* do not warn */
+		argc++;
+	}
+
+	if (argc && 1) {		/* warn because of compound expression */
+		argc++;
+	}
+
+	return 0;
+}
+
+
diff --git a/regress/usr.bin/xlint/test-14.c.exp b/regress/usr.bin/xlint/test-14.c.exp
new file mode 100644
index 00000000000..bd35832774c
--- /dev/null
+++ b/regress/usr.bin/xlint/test-14.c.exp
@@ -0,0 +1,3 @@
+test-14.c:26: warning: constant in conditional context
+test-14.c:36: warning: constant in conditional context
+Lint pass2: