harmony-scoping: make assignment to 'const' a late error.

test/mjsunit/harmony/block-const-assign.js

Index: test/mjsunit/harmony/block-const-assign.js
diff --git a/test/mjsunit/harmony/block-const-assign.js b/test/mjsunit/harmony/block-const-assign.js
index b71729e8a20ebe2f142d533a076bd424c4ea4591..c21a0a34803a686e677a5ce6a8b10cdeecf1d8ac 100644
--- a/test/mjsunit/harmony/block-const-assign.js
+++ b/test/mjsunit/harmony/block-const-assign.js
@@ -35,61 +35,61 @@
 
 // Function local const.
 function constDecl0(use) {
-  return "(function() { const constvar = 1; " + use + "; });";
+  return "(function() { const constvar = 1; " + use + "; })();";
 }
 
 
 function constDecl1(use) {
-  return "(function() { " + use + "; const constvar = 1; });";
+  return "(function() { " + use + "; const constvar = 1; })();";
 }
 
 
 // Function local const, assign from eval.
 function constDecl2(use) {
-  use = "eval('(function() { " + use + " })')";
+  use = "eval('(function() { " + use + " })')()";
   return "(function() { const constvar = 1; " + use + "; })();";
 }
 
 
 function constDecl3(use) {
-  use = "eval('(function() { " + use + " })')";
+  use = "eval('(function() { " + use + " })')()";
   return "(function() { " + use + "; const constvar = 1; })();";
 }
 
 
 // Block local const.
 function constDecl4(use) {
-  return "(function() { { const constvar = 1; " + use + "; } });";
+  return "(function() { { const constvar = 1; " + use + "; } })();";
 }
 
 
 function constDecl5(use) {
-  return "(function() { { " + use + "; const constvar = 1; } });";
+  return "(function() { { " + use + "; const constvar = 1; } })();";
 }
 
 
 // Block local const, assign from eval.
 function constDecl6(use) {
-  use = "eval('(function() {" + use + "})')";
+  use = "eval('(function() {" + use + "})')()";
   return "(function() { { const constvar = 1; " + use + "; } })();";
 }
 
 
 function constDecl7(use) {
-  use = "eval('(function() {" + use + "})')";
+  use = "eval('(function() {" + use + "})')()";
   return "(function() { { " + use + "; const constvar = 1; } })();";
 }
 
 
 // Function expression name.
 function constDecl8(use) {
-  return "(function constvar() { " + use + "; });";
+  return "(function constvar() { " + use + "; })();";
 }
 
 
 // Function expression name, assign from eval.
 function constDecl9(use) {
-  use = "eval('(function(){" + use + "})')";
+  use = "eval('(function(){" + use + "})')()";
   return "(function constvar() { " + use + "; })();";
 }
 
@@ -104,6 +104,7 @@ let decls = [ constDecl0,
               constDecl8,
               constDecl9
               ];
+let declsForTDZ = new Set([constDecl1, constDecl3, constDecl5, constDecl7]);
 let uses = [ 'constvar = 1;',
              'constvar += 1;',
              '++constvar;',
@@ -116,7 +117,13 @@ function Test(d,u) {
     print(d(u));
     eval(d(u));
   } catch (e) {
-    assertInstanceof(e, SyntaxError);
+    if (declsForTDZ.has(d) && u !== uses[0]) {
+      // In these cases, read of a const variable occurs
+      // before a write to it, so TDZ kicks in before const check.
+      assertInstanceof(e, ReferenceError);
+      return;
+    }
+    assertInstanceof(e, TypeError);
     assertTrue(e.toString().indexOf("Assignment to constant variable") >= 0);
     return;
   }