libgo: update to Go1.18beta2

gotools/
	* Makefile.am (go_cmd_cgo_files): Add ast_go118.go
	(check-go-tool): Copy golang.org/x/tools directories.
	* Makefile.in: Regenerate.

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/384695

1 files changed, 10 insertions, 23 deletions

diff --git a/libgo/go/net/parse.go b/libgo/go/net/parse.go
index 6c230ab..ee2890f 100644
--- a/libgo/go/net/parse.go
+++ b/libgo/go/net/parse.go
@@ -208,6 +208,16 @@ func last(s string, b byte) int {
 	return i
 }
 
+// hasUpperCase tells whether the given string contains at least one upper-case.
+func hasUpperCase(s string) bool {
+	for i := range s {
+		if 'A' <= s[i] && s[i] <= 'Z' {
+			return true
+		}
+	}
+	return false
+}
+
 // lowerASCIIBytes makes x ASCII lowercase in-place.
 func lowerASCIIBytes(x []byte) {
 	for i, b := range x {
@@ -331,26 +341,3 @@ func readFull(r io.Reader) (all []byte, err error) {
 		}
 	}
 }
-
-// goDebugString returns the value of the named GODEBUG key.
-// GODEBUG is of the form "key=val,key2=val2"
-func goDebugString(key string) string {
-	s := os.Getenv("GODEBUG")
-	for i := 0; i < len(s)-len(key)-1; i++ {
-		if i > 0 && s[i-1] != ',' {
-			continue
-		}
-		afterKey := s[i+len(key):]
-		if afterKey[0] != '=' || s[i:i+len(key)] != key {
-			continue
-		}
-		val := afterKey[1:]
-		for i, b := range val {
-			if b == ',' {
-				return val[:i]
-			}
-		}
-		return val
-	}
-	return ""
-}