> go:linkname to refer directly to functions that are defined but not
exported by the standard library.
> This is not supported and is likely to break with any new release. It
evidently breaks with GoLLVM.
Thanks for your attention, but I tried to write a demo with go:linkname.
In fact, it works well with gollvm...So maybe it is not the exact cause for
the problem
Herei is my code:
hello/hello.go
```
package hello
import (
"fmt"
_ "unsafe"
)
//go:linkname hellox hello.hellox
func hellox(x string) {
fmt.Println(x)
}
```
main.go
```
package main
import (
_ "mypackage/hello"
_ "unsafe"
)
//go:linkname hel hello.hellox
func hel(x string)
func main() {
hel("aaa")
//println("aaaa")
}
```
在2021年3月29日星期一 UTC+8 上午12:37:49<Ian Lance Taylor> 写道：
> On Sun, Mar 28, 2021 at 9:28 AM 张嘉熙 <f011...@gmail.com> wrote:
> >
> > For s2-geojson, I meet:
> > ```
> > # github.com/pantrif/s2-geojson/cmd/s2-geojson
> >
> /home/jx/.cache/go-build/6b/6bd003c99eb0a9e7c6ea6d372307b292ec615c75c28f9b1f696896ae2fb4272b-d(_go_.o):gomodule:function
>
> github_0com_1ugorji_1go_1codec.intf2impls.intf2impl: error: undefined
> reference to 'reflect.unsafe_New'
> >
> /home/jx/.cache/go-build/6b/6bd003c99eb0a9e7c6ea6d372307b292ec615c75c28f9b1f696896ae2fb4272b-d(_go_.o):gomodule:function
>
> github_0com_1ugorji_1go_1codec.Decoder.interfaceExtConvertAndDecode: error:
> undefined reference to 'reflect.unsafe_New'
> > decode.go:509: error: undefined reference to 'reflect.unsafe_New'
> > decode.go:14935: error: undefined reference to 'reflect.unsafe_New'
>
> This is a problem with github.com/ugorji/go. The file
> code/helper_unsafe.go uses go:linkname to refer directly to functions
> that are defined but not exported by the standard library. This is
> not supported and is likely to break with any new release. It
> evidently breaks with GoLLVM.
>
> Ian
>
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