Here is the fix Sean Dorward settled on.

-rob

; yesterday -d dcl.c cc.h
diff /n/dump/2001/0430/sys/src/cmd/cc/dcl.c dcl.c
117c117
< 	snprint(symb, NSYMB, "%s$%d", s->name, (char)s->block);
---
> 	snprint(symb, NSYMB, "%s$%d", s->name, s->block);
diff /n/dump/2001/0430/sys/src/cmd/cc/cc.h cc.h
83,84c83,84
< 	char	block;
< 	char	sueblock;
---
> 	ushort	block;
> 	ushort	sueblock;
98a99
> 	ushort	block;
100d100
< 	char	block;