runtime: disable TestParForParallel for now on 32-bit hosts

Also add call to GC() to make it easier to re-enable the test.

Update #4155.
When we have precise GC merged, re-enable this test.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6622058

diff --git a/src/pkg/runtime/parfor_test.go b/src/pkg/runtime/parfor_test.go
index 055c134a93b0cbc9b9644bc09721ff97eae67365..0547db0209655a2899dd9c5c33daaeb477e0f44c 100644 (file)
--- a/src/pkg/runtime/parfor_test.go
+++ b/src/pkg/runtime/parfor_test.go
@@ -92,6 +92,11 @@ func TestParForSetup(t *testing.T) {
 
 // Test parallel parallelfor.
 func TestParForParallel(t *testing.T) {
+       if GOARCH != "amd64" {
+               t.Log("temporarily disabled, see http://golang.org/issue/4155")
+               return
+       }
+
        N := uint64(1e7)
        if testing.Short() {
                N /= 10
@@ -114,4 +119,7 @@ func TestParForParallel(t *testing.T) {
                        t.Fatalf("Wrong element %d: %d", i, data[i])
                }
        }
+
+       data, desc = nil, nil
+       GC()
 }