From fc24624fa2e90543afe10ac1eccdbc22cb043667 Mon Sep 17 00:00:00 2001
From: Cary R <cygcary@yahoo.com>
Date: Fri, 3 Apr 2009 18:55:48 -0700
Subject: [PATCH] Add support for empty task port lists with a warning.

The standard does not allow this, but it appears that other
simulators do. This patch adds the functionality, but prints
a warning message for the invalid task definition.
(cherry picked from commit 46350da5f0f3c623cb9fe05003d7e2b8506d14a7)
---
 parse.y | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/parse.y b/parse.y
index 1f9ac0d11..ec9c9169c 100644
--- a/parse.y
+++ b/parse.y
@@ -2137,12 +2137,12 @@ module_item
 	delete[]$3;
       }
 
-  | K_task automatic_opt IDENTIFIER
+  | K_task automatic_opt IDENTIFIER '('
       { assert(current_task == 0);
 	current_task = pform_push_task_scope($3, $2);
 	FILE_NAME(current_task, @1);
       }
-    '(' task_port_decl_list ')' ';'
+    task_port_decl_list ')' ';'
     block_item_decls_opt
     statement_or_null
     K_endtask
@@ -2152,6 +2152,24 @@ module_item
 	current_task = 0;
 	delete[]$3;
       }
+
+  | K_task automatic_opt IDENTIFIER '(' ')' ';'
+      { assert(current_task == 0);
+	current_task = pform_push_task_scope($3, $2);
+	FILE_NAME(current_task, @1);
+      }
+    block_item_decls_opt
+    statement_or_null
+    K_endtask
+      { current_task->set_ports(0);
+	current_task->set_statement($9);
+	pform_pop_scope();
+	current_task = 0;
+	cerr << @3 << ": warning: task definition for \"" << $3
+	     << "\" has an empty port declaration list!" << endl;
+	delete[]$3;
+      }
+
   | K_task automatic_opt IDENTIFIER error K_endtask
       {
 	pform_pop_scope();