C1                 50 src/cmd/5c/gc.h typedef	struct	C1	C1;
C1                 74 src/cmd/5c/gc.h struct	C1
C1                 50 src/cmd/6c/gc.h typedef	struct	C1	C1;
C1                 79 src/cmd/6c/gc.h struct	C1
C1                 50 src/cmd/8c/gc.h typedef	struct	C1	C1;
C1                 80 src/cmd/8c/gc.h struct	C1