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go/ssa/interp/testdata/ifaceprom.go
Alan Donovan fb0642f5fb go.tools/ssa: fix a package-level var initialization order bug.
buildDecl was visiting all decls in source order, but the spec
calls for visiting all vars and init() funcs in order, then
all remaining functions.  These two passes are now called
buildInit(), buildFuncDecl().

+ Test.

Also:
- Added workaround to gcimporter for Func with pkg==nil.
- Prog.concreteMethods has been merged into Pkg.values.
- Prog.concreteMethod() renamed declaredFunc().
- s/mfunc/obj/ (name cleanup from recent gri CL)

R=gri
CC=golang-dev
https://golang.org/cl/12030044
2013-07-29 14:24:09 -04:00

59 lines
854 B
Go

package main
// Test of promotion of methods of an interface embedded within a
// struct. In particular, this test exercises that the correct
// method is called.
type I interface {
one() int
two() string
}
type S struct {
I
}
type impl struct{}
func (impl) one() int {
return 1
}
func (impl) two() string {
return "two"
}
func main() {
var s S
s.I = impl{}
if one := s.I.one(); one != 1 {
panic(one)
}
if one := s.one(); one != 1 {
panic(one)
}
closOne := s.I.one
if one := closOne(); one != 1 {
panic(one)
}
closOne = s.one
if one := closOne(); one != 1 {
panic(one)
}
if two := s.I.two(); two != "two" {
panic(two)
}
if two := s.two(); two != "two" {
panic(two)
}
closTwo := s.I.two
if two := closTwo(); two != "two" {
panic(two)
}
closTwo = s.two
if two := closTwo(); two != "two" {
panic(two)
}
}