diff options
Diffstat (limited to 'src/cmd/compile/internal/types/size.go')
| -rw-r--r-- | src/cmd/compile/internal/types/size.go | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/cmd/compile/internal/types/size.go b/src/cmd/compile/internal/types/size.go index f0e695ab96..7059eff398 100644 --- a/src/cmd/compile/internal/types/size.go +++ b/src/cmd/compile/internal/types/size.go @@ -104,8 +104,14 @@ func expandiface(t *Type) { continue } + if m.Type.IsUnion() { + continue + } + + // Once we go to 1.18, then embedded types can be anything, but + // for now, just interfaces and unions. if !m.Type.IsInterface() { - base.ErrorfAt(m.Pos, "interface contains embedded non-interface %v", m.Type) + base.ErrorfAt(m.Pos, "interface contains embedded non-interface, non-union %v", m.Type) m.SetBroke(true) t.SetBroke(true) // Add to fields so that error messages @@ -405,6 +411,12 @@ func CalcSize(t *Type) { t.Align = uint8(PtrSize) expandiface(t) + case TUNION: + // Always part of an interface for now, so size/align don't matter. + // Pretend a union is represented like an interface. + w = 2 * int64(PtrSize) + t.Align = uint8(PtrSize) + case TCHAN: // implemented as pointer w = int64(PtrSize) |