From 9ffaae91ffd4c0c062ec794899c05be5f64768de Mon Sep 17 00:00:00 2001
From: Aki Van Ness <aki@yosyshq.com>
Date: Wed, 24 Aug 2022 11:28:51 -0400
Subject: [PATCH] frontend: rtlil: imposed a hard limit for wire width of 2^24
 (closes #1206)

---
 frontends/rtlil/rtlil_parser.y | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/frontends/rtlil/rtlil_parser.y b/frontends/rtlil/rtlil_parser.y
index 7d99b2c42..98f18db91 100644
--- a/frontends/rtlil/rtlil_parser.y
+++ b/frontends/rtlil/rtlil_parser.y
@@ -187,7 +187,11 @@ wire_stmt:
 
 wire_options:
 	wire_options TOK_WIDTH TOK_INT {
-		current_wire->width = $3;
+		if ($3 > 0x1000000) {
+			rtlil_frontend_yyerror("RTLIL error: invalid wire width, must be less than 2^24");
+		} else {
+			current_wire->width = $3;
+		}
 	} |
 	wire_options TOK_WIDTH TOK_INVALID {
 		rtlil_frontend_yyerror("RTLIL error: invalid wire width");