libgo: better cmd/cgo handling for '.' in pkgpath

    Updates cgo's gccgoPkgpathToSymbolNew() to bring it into
    conformance with the way that gccgo now handles package
    paths with embedded dots (see CL 200838). See also
    https://gcc.gnu.org/PR61880, a related bug. This CL is a
    copy of CL 207957 in the main Go repo.

    Updates golang/go#35623.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/207977

From-SVN: r278470

diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index a981bb86c2d88c4914196e264e6449000bdc30f9..4eab78b36b467118581efb2b05542a3c13d1c749 100644 (file)
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-25d5e9dca49ad3f49393b254dd87f8df51487c65
+245904ac148f15db530fb8d50f526c47d08024c5
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.

diff --git a/libgo/go/cmd/cgo/out.go b/libgo/go/cmd/cgo/out.go
index 7282933e3c5be8da3d0d67cc1ed629546e6986ca..97886e1abd0b0ed074b5a758a39eff07366b8d96 100644 (file)
--- a/libgo/go/cmd/cgo/out.go
+++ b/libgo/go/cmd/cgo/out.go
@@ -1318,8 +1318,10 @@ func gccgoPkgpathToSymbolNew(ppath string) string {
        for _, c := range []byte(ppath) {
                switch {
                case 'A' <= c && c <= 'Z', 'a' <= c && c <= 'z',
-                       '0' <= c && c <= '9', c == '_', c == '.':
+                       '0' <= c && c <= '9', c == '_':
                        bsl = append(bsl, c)
+               case c == '.':
+                       bsl = append(bsl, ".x2e"...)
                default:
                        changed = true
                        encbytes := []byte(fmt.Sprintf("..z%02x", c))