From 7ae3d1b5a99edf84fd543fe78ed68b0470005959 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Thu, 12 Nov 2015 13:02:36 +0100
Subject: [PATCH] More bugfixes in handling of parameters in tasks and
 functions

---
 frontends/ast/simplify.cc | 12 +++++++++++-
 tests/simple/task_func.v  | 13 ++++++++++++-
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/frontends/ast/simplify.cc b/frontends/ast/simplify.cc
index 24e96f074..b7ccf7e0b 100644
--- a/frontends/ast/simplify.cc
+++ b/frontends/ast/simplify.cc
@@ -1773,6 +1773,7 @@ skip_dynamic_range_lvalue_expansion:;
 
 		size_t arg_count = 0;
 		std::map<std::string, std::string> replace_rules;
+		vector<AstNode*> added_mod_children;
 
 		if (current_block == NULL)
 		{
@@ -1873,9 +1874,13 @@ skip_dynamic_range_lvalue_expansion:;
 				wire->is_input = false;
 				wire->is_output = false;
 				current_ast_mod->children.push_back(wire);
-				while (wire->simplify(true, false, false, 1, -1, false, false)) { }
+				added_mod_children.push_back(wire);
+
+				if (child->type == AST_WIRE)
+					while (wire->simplify(true, false, false, 1, -1, false, false)) { }
 
 				replace_rules[child->str] = wire->str;
+				current_scope[wire->str] = wire;
 
 				if ((child->is_input || child->is_output) && arg_count < children.size())
 				{
@@ -1895,6 +1900,11 @@ skip_dynamic_range_lvalue_expansion:;
 				}
 			}
 
+		for (auto child : added_mod_children) {
+			child->replace_ids(prefix, replace_rules);
+			while (child->simplify(true, false, false, 1, -1, false, false)) { }
+		}
+
 		for (auto child : decl->children)
 			if (child->type != AST_WIRE && child->type != AST_PARAMETER && child->type != AST_LOCALPARAM)
 			{
diff --git a/tests/simple/task_func.v b/tests/simple/task_func.v
index 36ac768ea..fa50c1d5c 100644
--- a/tests/simple/task_func.v
+++ b/tests/simple/task_func.v
@@ -83,8 +83,9 @@ endmodule
 
 // -------------------------------------------------------------------
 
-module task_func_test04(input [7:0] in, output [7:0] out1, out2, out3);
+module task_func_test04(input [7:0] in, output [7:0] out1, out2, out3, out4);
 	parameter p = 23;
+	parameter px = 42;
 	function [7:0] test1;
 		input [7:0] i;
 		parameter p = 42;
@@ -105,7 +106,17 @@ module task_func_test04(input [7:0] in, output [7:0] out1, out2, out3);
 			test3 = i + p;
 		end
 	endfunction
+	function [7:0] test4;
+		input [7:0] i;
+		parameter px = p + 13;
+		parameter p3 = px - 37;
+		parameter p4 = p3 ^ px;
+		begin
+			test4 = i + p4;
+		end
+	endfunction
 	assign out1 = test1(in);
 	assign out2 = test2(in);
 	assign out3 = test3(in);
+	assign out4 = test4(in);
 endmodule
-- 
2.30.2