Update

vendor/golang.org/x/sys/cpu/parse.go

@@ -6,38 +6,50 @@ package cpu
 
 import "strconv"
 
-// parseRelease parses a dot-separated version number. It follows the semver
-// syntax, but allows the minor and patch versions to be elided.
+// parseRelease parses a dot-separated version number from the prefix
+// of rel. It returns ok=true only if at least the major and minor
+// components were successfully parsed; the patch component is
+// best-effort. Trailing vendor or build suffixes such as
+// "-generic", "+", "_hi3535", or "-rc1" are ignored.
 //
 // This is a copy of the Go runtime's parseRelease from
-// https://golang.org/cl/209597.
+// https://golang.org/cl/209597, updated in https://golang.org/cl/781800.
 func parseRelease(rel string) (major, minor, patch int, ok bool) {
-	// Strip anything after a dash or plus.
-	for i := range len(rel) {
-		if rel[i] == '-' || rel[i] == '+' {
-			rel = rel[:i]
-			break
+	// next consumes a run of decimal digits from the front of rel,
+	// returning the parsed value. If the digits are followed by a
+	// '.', it is consumed and more is set so the caller knows to
+	// parse another component; otherwise scanning terminates and
+	// the rest of rel is discarded.
+	next := func() (n int, more, ok bool) {
+		i := 0
+		for i < len(rel) && rel[i] >= '0' && rel[i] <= '9' {
+			i++
 		}
+		if i == 0 {
+			return 0, false, false
+		}
+		n, err := strconv.Atoi(rel[:i])
+		if err != nil {
+			return 0, false, false
+		}
+		if i < len(rel) && rel[i] == '.' {
+			rel = rel[i+1:]
+			return n, true, true
+		}
+		rel = ""
+		return n, false, true
 	}
 
-	next := func() (int, bool) {
-		for i := range len(rel) {
-			if rel[i] == '.' {
-				ver, err := strconv.Atoi(rel[:i])
-				rel = rel[i+1:]
-				return ver, err == nil
-			}
-		}
-		ver, err := strconv.Atoi(rel)
-		rel = ""
-		return ver, err == nil
+	var more bool
+	if major, more, ok = next(); !ok || !more {
+		return 0, 0, 0, false
 	}
-	if major, ok = next(); !ok || rel == "" {
-		return
+	if minor, more, ok = next(); !ok {
+		return 0, 0, 0, false
 	}
-	if minor, ok = next(); !ok || rel == "" {
-		return
+	if !more {
+		return major, minor, 0, true
 	}
-	patch, ok = next()
-	return
+	patch, _, _ = next()
+	return major, minor, patch, true
 }