Add checks for additional invalid literals

Author: mattmeyers

src/jv_parse.c

@@ -514,6 +514,10 @@ static pfunc check_literal(struct jv_parser* p) {
   case 'f': pattern = "false"; plen = 5; v = jv_false(); break;
   case '\'':
     return "Invalid string literal; expected \", but got '";
+  case '/':
+  case '*':
+  case '&':
+    return "Invalid literal";
   case 'n':
     // if it starts with 'n', it could be a literal "nan"
     if (p->tokenpos != 3) {

tests/jq.test

@@ -2094,3 +2094,15 @@ null
 try fromjson catch .
 "{'a': 123}"
 "Invalid string literal; expected \", but got ' at line 1, column 5 (while parsing '{'a': 123}')"
+
+try fromjson catch .
+"{\"a\": /}"
+"Invalid literal at line 1, column 8 (while parsing '{\"a\": /}')"
+
+try fromjson catch .
+"{\"a\": *}"
+"Invalid literal at line 1, column 8 (while parsing '{\"a\": *}')"
+
+try fromjson catch .
+"{\"a\": &}"
+"Invalid literal at line 1, column 8 (while parsing '{\"a\": &}')"