diff options
Diffstat (limited to 'src/cmd/compile/internal/noder/reader.go')
| -rw-r--r-- | src/cmd/compile/internal/noder/reader.go | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/noder/reader.go b/src/cmd/compile/internal/noder/reader.go index 73e4ddbbed..dd3bb1523e 100644 --- a/src/cmd/compile/internal/noder/reader.go +++ b/src/cmd/compile/internal/noder/reader.go @@ -1676,6 +1676,20 @@ func (r *reader) expr() (res ir.Node) { typ := r.typ() pos := r.pos() x := r.expr() + + // TODO(mdempsky): Stop constructing expressions of untyped type. + x = typecheck.DefaultLit(x, typ) + + if op, why := typecheck.Convertop(x.Op() == ir.OLITERAL, x.Type(), typ); op == ir.OXXX { + // types2 ensured that x is convertable to typ under standard Go + // semantics, but cmd/compile also disallows some conversions + // involving //go:notinheap. + // + // TODO(mdempsky): This can be removed after #46731 is implemented. + base.ErrorfAt(pos, "cannot convert %L to type %v%v", x, typ, why) + base.ErrorExit() // harsh, but prevents constructing invalid IR + } + return typecheck.Expr(ir.NewConvExpr(pos, ir.OCONV, typ, x)) } } |