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			// If check != nil, check.newInterface will have saved the interface for later completion.
			if check == nil { // golang/go#61561: all newly created interfaces must be fully evaluated
				iface.typeSet()
			}
		}
	}

	return underlying
}

// safeUnderlying returns the underlying type of typ without expanding
// instances, to avoid infinite recursion.
//

			// If check != nil, check.newInterface will have saved the interface for later completion.
			if check == nil { // golang/go#61561: all newly created interfaces must be fully evaluated
				iface.typeSet()
			}
		}
	}

	return underlying
}

// safeUnderlying returns the underlying type of typ without expanding
// instances, to avoid infinite recursion.
//

			}

		case *Slice, *Chan:
			mode = value

		case *Map:
			if id == _Len {
				mode = value
			}

		case *Interface:
			if !isTypeParam(x.typ) {
				break
			}
			if t.typeSet().underIs(func(t Type) bool {
				switch t := arrayPtrDeref(t).(type) {
				case *Basic:
					if isString(t) && id == _Len {
						return true
					}
				case *Array, *Slice, *Chan:
					return true

			}

		case *Slice, *Chan:
			mode = value

		case *Map:
			if id == _Len {
				mode = value
			}

		case *Interface:
			if !isTypeParam(x.typ) {
				break
			}
			if t.typeSet().underIs(func(t Type) bool {
				switch t := arrayPtrDeref(t).(type) {
				case *Basic:
					if isString(t) && id == _Len {
						return true
					}
				case *Array, *Slice, *Chan:
					return true

		// Thus, we only need to look at the input and result parameters.
		return t.params != nil && w.varList(t.params.vars) || t.results != nil && w.varList(t.results.vars)

	case *Interface:
		tset := t.typeSet()
		for _, m := range tset.methods {
			if w.isParameterized(m.typ) {
				return true
			}
		}
		return tset.is(func(t *term) bool {
			return t != nil && w.isParameterized(t.typ)
		})

		// Thus, we only need to look at the input and result parameters.
		return t.params != nil && w.varList(t.params.vars) || t.results != nil && w.varList(t.results.vars)

	case *Interface:
		tset := t.typeSet()
		for _, m := range tset.methods {
			if w.isParameterized(m.typ) {
				return true
			}
		}
		return tset.is(func(t *term) bool {
			return t != nil && w.isParameterized(t.typ)
		})

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/*
Linux ELF:
gcc -gdwarf-2 -m64 -c typedef.c && gcc -gdwarf-2 -m64 -o typedef.elf typedef.o

OS X Mach-O:
gcc -gdwarf-2 -m64 -c typedef.c -o typedef.macho
gcc -gdwarf-4 -m64 -c typedef.c -o typedef.macho4
*/
#include <complex.h>

typedef volatile int* t_ptr_volatile_int;
typedef const char *t_ptr_const_char;
typedef long t_long;
typedef unsigned short t_ushort;
typedef int t_func_int_of_float_double(float, double);