1 files changed, 48 insertions, 0 deletions
diff --git a/test/external/c-testsuite/tests/single-exec/00031.c b/test/external/c-testsuite/tests/single-exec/00031.c
new file mode 100644
index 0000000..09b43ce
--- /dev/null
+++ b/test/external/c-testsuite/tests/single-exec/00031.c
@@ -0,0 +1,48 @@
+int
+zero()
+{
+	return 0;
+}
+
+int
+one()
+{
+	return 1;
+}
+
+int
+main()
+{
+	int x;
+	int y;
+	
+	x = zero();
+	y = ++x;
+	if (x != 1)
+		return 1;
+	if (y != 1)
+		return 1;
+	
+	x = one();	
+	y = --x;
+	if (x != 0)
+		return 1;
+	if (y != 0)
+		return 1;
+	
+	x = zero();
+	y = x++;
+	if (x != 1)
+		return 1;
+	if (y != 0)
+		return 1;
+	
+	x = one();
+	y = x--;
+	if (x != 0)
+		return 1;
+	if (y != 1)
+		return 1;
+	
+	return 0;
+}