golang live1 代码
文件路径：/test/live1.go
/ compile
/ Copyright 2014 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
/ Test that code compiles without
/ "internal error: ... recorded as live on entry" errors
/ from the liveness code.
/
/ This code contains methods or other construct that
/ trigger the generation of wrapper functions with no
/ clear line number (they end up using line 1), and those
/ would have annotations printed if we used -live=1,
/ like the live.go test does.
/ Instead, this test relies on the fact that the liveness
/ analysis turns any non-live parameter on entry into
/ a compile error. Compiling successfully means that bug
/ has been avoided.
package main
/ The liveness analysis used to get confused by the tail return
/ instruction in the wrapper methods generated for T1.M and (*T1).M,
/ causing a spurious "live at entry: ~r1" for the return result.
type T struct {
}
func (t *T) M() *int
type T1 struct {
*T
}
/ Liveness analysis used to have the VARDEFs in the wrong place,
/ causing a temporary to appear live on entry.
func f1(pkg, typ, meth string) {
panic("value method " + pkg + "." + typ + "." + meth + " called using nil *" + typ + " pointer")
}
func f2() interface{} {
return new(int)
}