test: ensure all failing tests exit nonzero.

Previously merely printing an error would cause the golden
file comparison (in 'bash run') to fail, but that is no longer
the case with the new run.go driver.

R=iant
CC=golang-dev
https://codereview.appspot.com/7310087

1 files changed, 3 insertions, 0 deletions

diff --git a/test/floatcmp.go b/test/floatcmp.go
index f9f59a937..6c424ccd9 100644
--- a/test/floatcmp.go
+++ b/test/floatcmp.go
@@ -87,4 +87,7 @@ func main() {
 			println(t.name, "=", t.expr, "want", t.want)
 		}
 	}
+	if bad {
+		panic("floatcmp failed")
+	}
 }