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

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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
This commit is contained in:
Ian Lance Taylor 2019-11-19 23:04:08 +00:00
parent fce6467b1e
commit 0c6ce0ae55
2 changed files with 4 additions and 2 deletions
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2
gcc/go/gofrontend/MERGE
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@ -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.

4
libgo/go/cmd/cgo/out.go
View file

@ -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))