--- /sys/src/cmd/cc/lexbody
+++ /sys/src/cmd/cc/lexbody
@@ -458,6 +458,8 @@
 	c = peekc;
 	if(c != IGN) {
 		peekc = IGN;
+		if(c == '\n')
+			lineno++;
 		return c;
 	}
 	c = GETC();