From d22888ce746b7e1afef9b797cf2aeef1542247cb Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Mon, 6 Apr 2020 10:32:50 +0000
Subject: [PATCH] read_ilang: improve error message for overly long wires.

Fixes #1838.
---
 frontends/ilang/ilang_parser.y | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/frontends/ilang/ilang_parser.y b/frontends/ilang/ilang_parser.y
index 4e0b62edd..91adc0cc9 100644
--- a/frontends/ilang/ilang_parser.y
+++ b/frontends/ilang/ilang_parser.y
@@ -179,6 +179,9 @@ wire_options:
 	wire_options TOK_WIDTH TOK_INT {
 		current_wire->width = $3;
 	} |
+	wire_options TOK_WIDTH TOK_INVALID {
+		rtlil_frontend_ilang_yyerror("ilang error: invalid wire width");
+	} |
 	wire_options TOK_UPTO {
 		current_wire->upto = true;
 	} |
-- 
2.30.2