diff options
Diffstat (limited to 'src/pkg/reflect/all_test.go')
-rw-r--r-- | src/pkg/reflect/all_test.go | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/pkg/reflect/all_test.go b/src/pkg/reflect/all_test.go index 56cb315ad6..a61f663084 100644 --- a/src/pkg/reflect/all_test.go +++ b/src/pkg/reflect/all_test.go @@ -3032,6 +3032,25 @@ func TestSliceOf(t *testing.T) { checkSameType(t, Zero(SliceOf(TypeOf(T1(1)))).Interface(), []T1{}) } +func TestSliceOverflow(t *testing.T) { + // check that MakeSlice panics when size of slice overflows uint + const S = 1e6 + s := uint(S) + l := (1<<(unsafe.Sizeof((*byte)(nil))*8)-1)/s + 1 + if l*s >= s { + t.Fatal("slice size does not overflow") + } + var x [S]byte + st := SliceOf(TypeOf(x)) + defer func() { + err := recover() + if err == nil { + t.Fatal("slice overflow does not panic") + } + }() + MakeSlice(st, int(l), int(l)) +} + func TestSliceOfGC(t *testing.T) { type T *uintptr tt := TypeOf(T(nil)) |