cmd/go: v1.2 module query matches pre-v1.2 versions #31972
Description
Version queries like @v1.2 are handled by this code in cmd/go/internal/modload/query.go:
// matchSemverPrefix reports whether the shortened semantic version p
// matches the full-width (non-shortened) semantic version v.
func matchSemverPrefix(p, v string) bool {
return len(v) > len(p) && v[len(p)] == '.' && v[:len(p)] == p
}
matchSemverPrefix("v1.2", "v1.2.0-prerelease") is true but probably should be false, because semver.Compare("v1.2", "v1.2.0-prerelease") < 0.
/cc @jayconrod @bcmills