Add missing index incrementation to ecma_builtin_string_object_raw (#3709)

JerryScript-DCO-1.0-Signed-off-by: Adam Szilagyi aszilagy@inf.u-szeged.hu

jerry-core/ecma/builtin-objects/ecma-builtin-string.c

@@ -235,6 +235,7 @@ ecma_builtin_string_object_raw (ecma_value_t this_arg, /**< 'this' argument */
     /* 12.f-g */
     if (next_index >= number_of_substitutions)
     {
+      next_index++;
       continue;
     }
 

tests/jerry/es2015/string-raw.js

@@ -56,3 +56,9 @@ let str = String.raw({
 assert(str === "foo5barJavaScriptbaz");
 
 assert(String.raw({ raw: 'test' }, 0, 1, 2) === "t0e1s2t");
+
+var get = [];
+var raw = new Proxy({length: 2, 0: '', 1: ''}, { get: function(o, k) { get.push(k); return o[k]; }});
+var p = new Proxy({raw: raw}, { get: function(o, k) { get.push(k); return o[k]; }});
+String.raw(p);
+assert(get + '' === "raw,length,0,1");