Use gcc -ansi -pedantic in 9c.  Fix many non-C89-isms.
diff --git a/src/cmd/sam/io.c b/src/cmd/sam/io.c
index 95c2e0c..8740c7c 100644
--- a/src/cmd/sam/io.c
+++ b/src/cmd/sam/io.c
@@ -223,7 +223,7 @@
 	char **av;
 	int ac;
 
-	// count args
+	/* count args */
 	for(av = argv; *av; av++)
 		;
 	av = malloc(sizeof(char*)*((av-argv) + 5));