Added test case for preprocessor bug reported in #68

Signed-off-by: Cristian Maglie <c.maglie@arduino.cc>

Author: cmaglie

src/arduino.cc/builder/test/sketch12/sketch12.ino

@@ -0,0 +1,16 @@
+// See: https://github.com/arduino/arduino-builder/issues/68
+
+// The following avoid duplicate definitions of min and max
+#undef min
+#undef max
+
+#include <memory>
+
+void setup() {
+  test();
+}
+
+void loop() {}
+
+void test() {}
+

src/arduino.cc/builder/test/try_build_of_problematic_sketch_test.go

@@ -199,6 +199,12 @@ func TestTryBuild038(t *testing.T) {
 	tryBuild(t, "sketch_with_multiline_prototypes", "sketch_with_multiline_prototypes.ino")
 }
 
+func TestTryBuild039(t *testing.T) {
+	ctx := makeDefaultContext(t)
+	ctx.FQBN = "arduino:samd:arduino_zero_native"
+	tryBuildWithContext(t, ctx, "sketch12", "sketch12.ino")
+}
+
 func makeDefaultContext(t *testing.T) *types.Context {
 	DownloadCoresAndToolsAndLibraries(t)