From 609caa23b5e12547c043dc4a1827d1a531af1992 Mon Sep 17 00:00:00 2001 From: Clifford Wolf Date: Sun, 24 Nov 2013 17:17:21 +0100 Subject: Implemented correct handling of signed module parameters --- tests/simple/hierarchy.v | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'tests/simple') diff --git a/tests/simple/hierarchy.v b/tests/simple/hierarchy.v index 97612c74..17888009 100644 --- a/tests/simple/hierarchy.v +++ b/tests/simple/hierarchy.v @@ -4,14 +4,20 @@ module top(a, b, y1, y2, y3, y4); input [3:0] a; input signed [3:0] b; output [7:0] y1, y2, y3, y4; + +// this version triggers a bug in icarus verilog +// submod #(-3'sd1, 3'b111 + 3'b001) foo (a, b, y1, y2, y3, y4); + +// this version is handled correctly by icarus verilog submod #(-3'sd1, -3'sd1) foo (a, b, y1, y2, y3, y4); + endmodule (* gentb_skip *) module submod(a, b, y1, y2, y3, y4); parameter c = 0; parameter [7:0] d = 0; -input [7:0] a, b; +input [3:0] a, b; output [7:0] y1, y2, y3, y4; assign y1 = a; assign y2 = b; -- cgit v1.2.3