return KindPrintf
		} else {
			return KindPrint
		}
	}

	return r.funcs[fn]
}

// isWrapper is a fact indicating that a function is a print or printf wrapper.
type isWrapper struct{ Kind Kind }

func (f *isWrapper) AFact() {}

func (f *isWrapper) String() string {
	switch f.Kind {
	case KindPrintf:
		return "printfWrapper"
	case KindPrint:
		return "printWrapper"

// to this instance (location, frame base, etc).
func PutConcreteFunc(ctxt Context, s *FnState, isWrapper bool) error {
	if logDwarf {
		ctxt.Logf("PutConcreteFunc(%v)\n", s.Info)
	}
	abbrev := DW_ABRV_FUNCTION_CONCRETE
	if isWrapper {
		abbrev = DW_ABRV_WRAPPER_CONCRETE
	}
	Uleb128put(ctxt, s.Info, int64(abbrev))

	// Abstract origin.

package.

An Analyzer that uses facts must declare their types:

	var Analyzer = &analysis.Analyzer{
		Name:      "printf",
		FactTypes: []analysis.Fact{new(isWrapper)},
		...
	}

	type isWrapper struct{} // => *types.Func f “is a printf wrapper”

The driver program ensures that facts for a pass’s dependencies are
generated before analyzing the package and is responsible for propagating

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