Fix incorrect parsing of %*.

acornjs · Sep 26, 2017 · bd728e8 · bd728e8
1 parent ccfd59d
commit bd728e8
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/src/tokenize.js b/src/tokenize.js
@@ -221,7 +221,7 @@ pp.readToken_mult_modulo_exp = function(code) { // '%*'
   let tokentype = code === 42 ? tt.star : tt.modulo
 
   // exponentiation operator ** and **=
-  if (this.options.ecmaVersion >= 7 && next === 42) {
+  if (this.options.ecmaVersion >= 7 && code == 42 && next === 42) {
     ++size
     tokentype = tt.starstar
     next = this.input.charCodeAt(this.pos + 2)

diff --git a/test/tests-es7.js b/test/tests-es7.js
@@ -342,6 +342,10 @@ test("a-- ** 2", {
   "sourceType": "script"
 }, {ecmaVersion: 7})
 
+testFail("x %* y", "Unexpected token (1:3)", { ecmaVersion: 7 });
+
+testFail("x %*= y", "Unexpected token (1:3)", { ecmaVersion: 7 });
+
 testFail("function foo(a=2) { 'use strict'; }", "Illegal 'use strict' directive in function with non-simple parameter list (1:0)", { ecmaVersion: 7 })
 testFail("(a=2) => { 'use strict'; }", "Illegal 'use strict' directive in function with non-simple parameter list (1:0)", { ecmaVersion: 7 })
 testFail("function foo({a}) { 'use strict'; }", "Illegal 'use strict' directive in function with non-simple parameter list (1:0)", { ecmaVersion: 7 })