diff options
Diffstat (limited to 'libgo/go/runtime/debug/garbage_test.go')
| -rw-r--r-- | libgo/go/runtime/debug/garbage_test.go | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/libgo/go/runtime/debug/garbage_test.go b/libgo/go/runtime/debug/garbage_test.go index 6ec94aa3fb9..04e954b1b1e 100644 --- a/libgo/go/runtime/debug/garbage_test.go +++ b/libgo/go/runtime/debug/garbage_test.go @@ -80,7 +80,7 @@ func TestReadGCStats(t *testing.T) { for i := 0; i < n; i++ { dt := stats.PauseEnd[i] if dt.UnixNano() != int64(mstats.PauseEnd[off]) { - t.Errorf("stats.PauseEnd[%d] = %d, want %d", i, dt, mstats.PauseEnd[off]) + t.Errorf("stats.PauseEnd[%d] = %d, want %d", i, dt.UnixNano(), mstats.PauseEnd[off]) } off = (off + len(mstats.PauseEnd) - 1) % len(mstats.PauseEnd) } @@ -89,10 +89,6 @@ func TestReadGCStats(t *testing.T) { var big = make([]byte, 1<<20) func TestFreeOSMemory(t *testing.T) { - if runtime.GOARCH == "arm64" || runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le" || runtime.GOARCH == "mips64" || runtime.GOARCH == "mips64le" || - runtime.GOOS == "nacl" { - t.Skip("issue 9993; scavenger temporarily disabled on systems with physical pages larger than logical pages") - } var ms1, ms2 runtime.MemStats if big == nil { @@ -118,3 +114,16 @@ func TestSetGCPercent(t *testing.T) { t.Errorf("SetGCPercent(123); SetGCPercent(x) = %d, want 123", new) } } + +func TestSetMaxThreadsOvf(t *testing.T) { + // Verify that a big threads count will not overflow the int32 + // maxmcount variable, causing a panic (see Issue 16076). + // + // This can only happen when ints are 64 bits, since on platforms + // with 32 bit ints SetMaxThreads (which takes an int parameter) + // cannot be given anything that will overflow an int32. + // + // Call SetMaxThreads with 1<<31, but only on 64 bit systems. + nt := SetMaxThreads(1 << (30 + ^uint(0)>>63)) + SetMaxThreads(nt) // restore previous value +} |