diff --git a/cc/test.go b/cc/test.go
index a96af31..007932e 100644
--- a/cc/test.go
+++ b/cc/test.go
@@ -277,7 +277,10 @@
 
 	flags.Local.CFlags = append(flags.Local.CFlags, "-DGTEST_HAS_STD_STRING")
 	if ctx.Host() {
-		flags.Local.CFlags = append(flags.Local.CFlags, "-O0", "-g")
+		flags.Local.CFlags = append([]string{"-Og", "-g"}, flags.Local.CFlags...)
+
+		// Turn off unused-result warning since it is not important for tests.
+		flags.Local.CFlags = append(flags.Local.CFlags, "-Wno-error=unused-result")
 
 		switch ctx.Os() {
 		case android.Windows: