commit d87f9edda1ca873af130bce479528143c73e5fdc
Author: Adrian Grigore <i@adi.onl>
Date:   Sat Nov 9 15:38:33 2024 +0200

    sys/src/9k/port: cope with uartnuart == 0 in devcons (thanks Geoff Collyer)

diff --git a/sys/src/9k/port/devuart.c b/sys/src/9k/port/devuart.c
index 4c8e03e8d..8302fc2c0 100644
--- a/sys/src/9k/port/devuart.c
+++ b/sys/src/9k/port/devuart.c
@@ -227,8 +227,10 @@ uartreset(void)
 		uartnuart++;
 	}
 
-//fix the case of uartnuart == 0, will panic below
-	if(uartnuart)
+	/* cope with uartnuart == 0, else will panic below */
+	if (uartnuart == 0)
+		uart = malloc(sizeof(Uart*));		/* dummy */
+	else
 		uart = malloc(uartnuart*sizeof(Uart*));
 
 	uartndir = 1 + 3*uartnuart;