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cmd/link: treat cgo exported symbols as C symbols 

Fixes #25827

Change-Id: I6736c3ac061ca32aac2eb68b01ba53a179d68cf4
Reviewed-on: https://go-review.googlesource.com/118076
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Ian Lance Taylor 2018-06-11 16:46:23 -07:00
parent d0d47bb94f
commit f861f66d1d
1 changed files with 5 additions and 2 deletions
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7
src/cmd/link/internal/ld/pcln.go
View File

@ -11,6 +11,7 @@ import (
"log"
"os"
"path/filepath"
"strings"
)
// iteration over encoded pcdata tables.
@ -159,13 +160,15 @@ func renumberfiles(ctxt *Link, files []*sym.Symbol, d *sym.Pcdata) {
*d = out
}
// onlycsymbol reports whether this is a cgo symbol provided by the
// runtime and only used from C code.
// onlycsymbol reports whether this is a symbol that is referenced by C code.
func onlycsymbol(s *sym.Symbol) bool {
switch s.Name {
case "_cgo_topofstack", "_cgo_panic", "crosscall2":
return true
}
if strings.HasPrefix(s.Name, "_cgoexp_") {
return true
}
return false
}