update

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/open-policy-agent/opa/ast/fuzz.go

@@ -0,0 +1,28 @@
+// +build gofuzz
+
+package ast
+
+import (
+	"regexp"
+)
+
+// nested { and [ tokens cause the parse time to explode.
+// see: https://github.com/mna/pigeon/issues/75
+var blacklistRegexp = regexp.MustCompile(`[{(\[]{5,}`)
+
+func Fuzz(data []byte) int {
+
+	if blacklistRegexp.Match(data) {
+		return -1
+	}
+
+	str := string(data)
+	_, _, err := ParseStatements("", str)
+
+	if err == nil {
+		CompileModules(map[string]string{"": str})
+		return 1
+	}
+
+	return 0
+}