Fix function declaration issues inside catch blocks. (#3700)

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

tests/jerry/es2015/try-catch.js

@@ -0,0 +1,130 @@
+/* Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var e = -1
+
+function f1()
+{
+  assert(e === undefined)
+  try {
+    throw 0
+  } catch (e) {
+    var e = 1
+    assert(e === 1)
+  }
+  assert(e === undefined)
+}
+f1()
+
+function f2()
+{
+  assert(e === undefined)
+  try {
+    throw 0
+  } catch (e) {
+    {
+      var e = 2
+      assert(e === 2)
+    }
+    assert(e === 2)
+  }
+  assert(e === undefined)
+}
+f2()
+
+function f3()
+{
+  assert(e === -1)
+  try {
+    throw [0]
+  } catch ([e]) {
+    {
+      try {
+        eval("var e = 2")
+        assert(false)
+      } catch (e) {
+        assert(e instanceof SyntaxError)
+      }
+    }
+    assert(e === 0)
+  }
+  assert(e === -1)
+}
+f3()
+
+function f4()
+{
+  assert(e === undefined)
+  try {
+    throw 0
+  } catch (e) {
+    {
+      function e() { return 3 }
+      assert(e() === 3)
+    }
+    assert(e === 0)
+  }
+  assert(e() === 3)
+}
+f4()
+
+function f5()
+{
+  assert(e === -1)
+  try {
+    throw 0
+  } catch (e) {
+    {
+      eval("function e() { return 3 } assert(e === 0)")
+      assert(e === 0)
+    }
+    assert(e === 0)
+  }
+  assert(e() === 3)
+}
+f5()
+
+function f6()
+{
+  let e = 4;
+  assert(e === 4)
+  try {
+    throw 0
+  } catch (e) {
+    {
+      function e() { return 5 }
+      assert(e() === 5)
+    }
+    assert(e === 0)
+  }
+  assert(e === 4)
+}
+f6()
+
+function f7()
+{
+  let e = 6;
+  assert(e === 6)
+  try {
+    throw 0
+  } catch (e) {
+    {
+      eval("function e() { return 7 } assert(e() === 7)")
+    }
+    assert(e === 0)
+  }
+  assert(e === 6)
+}
+f7()

tests/jerry/es2015/try-pattern.js

@@ -28,6 +28,11 @@ check_syntax_error("try {} catch([a] {}");
 check_syntax_error("try {} catch([a] = [1]) {}");
 check_syntax_error("try {} catch({a} = {a:1}) {}");
 check_syntax_error("try {} catch(a,) {}");
+check_syntax_error("try {} catch(a) { function a() {} }");
+check_syntax_error("try {} catch(a) { { function a() {} } function a() {} }");
+check_syntax_error("try {} catch([a]) { var a }");
+check_syntax_error("try {} catch([a]) { { var a } }");
+check_syntax_error("try {} catch([a]) { function a() {} }");
 
 try {
   throw [1,2]