[es6] Initial support for let/const bindings in sloppy mode

test/mjsunit/harmony/block-let-semantics-sloppy.js

Index: test/mjsunit/harmony/block-let-semantics-sloppy.js
diff --git a/test/mjsunit/es6/block-let-semantics.js b/test/mjsunit/harmony/block-let-semantics-sloppy.js
similarity index 97%
copy from test/mjsunit/es6/block-let-semantics.js
copy to test/mjsunit/harmony/block-let-semantics-sloppy.js
index b0a826a007a84eaeac5c09c58c947b6de4b28972..653c8023dc60abb16670ae6654bb23d228d0d92d 100644
--- a/test/mjsunit/es6/block-let-semantics.js
+++ b/test/mjsunit/harmony/block-let-semantics-sloppy.js
@@ -25,7 +25,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-"use strict";
+// Flags: --harmony-sloppy --no-legacy-const
 
 // Test temporal dead zone semantics of let bound variables in
 // function and block scopes.
@@ -95,7 +95,7 @@ TestAll('eval("x"); const x = 1;');
 
 // Use before initialization with check for eval-shadowed bindings.
 TestAll('function f() { eval("var y = 2;"); x + 1; }; f(); let x;');
-TestAll('function f() { eval("var y = 2;"); x = 1; }; f(); let x;');
+// TestAll('function f() { eval("var y = 2;"); x = 1; }; f(); let x;');

[rossberg, 2015/07/08 11:49:56]

Can you add a TODO explaining why this is commented out right now? And file a
bug, too, so it doesn't get lost.

[arv (Not doing code reviews), 2015/07/08 13:43:45]

Done.

 TestAll('function f() { eval("var y = 2;"); x += 1; }; f(); let x;');
 TestAll('function f() { eval("var y = 2;"); ++x; }; f(); let x;');
 TestAll('function f() { eval("var y = 2;"); x++; }; f(); let x;');