Catch paramter must not be scanned as function in ES5.1 (#3618)

Fixes #3554

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

jerry-core/parser/js/js-scanner-util.c

@@ -553,17 +553,26 @@ scanner_pop_literal_pool (parser_context_t *context_p, /**< context */
 
       no_declarations++;
 
-      if (type & SCANNER_LITERAL_IS_FUNC)
-      {
-        no_declarations++;
-      }
-
       if (no_reg || (type & no_reg_types))
       {
         type |= SCANNER_LITERAL_NO_REG;
         literal_p->type = type;
       }
 
+      if (type & SCANNER_LITERAL_IS_FUNC)
+      {
+        no_declarations++;
+
+#if !ENABLED (JERRY_ES2015)
+        if (type & SCANNER_LITERAL_IS_LOCAL)
+        {
+          /* Catch parameters cannot be functions. */
+          literal_p->type = (uint8_t) (type & ~SCANNER_LITERAL_IS_FUNC);
+          no_declarations--;
+        }
+#endif /* !ENABLED (JERRY_ES2015) */
+      }
+
       intptr_t diff = (intptr_t) (literal_p->char_p - prev_source_p);
 
       if (diff >= 1 && diff <= UINT8_MAX)

tests/jerry/es5.1/try-catch.js

@@ -0,0 +1,26 @@
+// 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.
+
+function f() {
+  try {
+    assert(e() == 6)
+    throw 8;
+    assert(false);
+  } catch (e) {
+    function e() { return 6 }
+    assert(e == 8);
+  }
+}
+
+f();

tests/jerry/fail/regression-test-issue-3554.js

@@ -0,0 +1,15 @@
+// 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.
+
+(function(){try{}catch(e){function e