old plan 9 c compilers reject line 34, which has two
semi-colons, with

: bootes; mk
8c -FVw -I. devpccard.c
devpccard.c:35 syntax error, last name: ulong
devpccard.c:39 name not declared: ioaddr
devpccard.c:41 name not declared: ioaddr

Reference: /n/sources/patch/applied/devpccard-semi
Date: Wed Apr 19 02:16:42 CES 2006
Signed-off-by: geoff@collyer.net

--- /sys/src/boot/pc/devpccard.c	Wed Apr 19 02:15:57 2006
+++ /sys/src/boot/pc/devpccard.c	Wed Apr 19 02:15:51 2006
@@ -31,7 +31,7 @@
 static ulong
 ioreserve(ulong, int size, int align, char *)
 {
-	static ulong isaend = 0x400; /*0xfd00*/;
+	static ulong isaend = 0x400; /*0xfd00*/
 	ulong ioaddr;
 
 	if (align)