Use gcc -ansi -pedantic in 9c.  Fix many non-C89-isms.
diff --git a/src/cmd/tcs/gb.c b/src/cmd/tcs/gb.c
index b149b8f..c4cd017 100644
--- a/src/cmd/tcs/gb.c
+++ b/src/cmd/tcs/gb.c
@@ -1100,5 +1100,5 @@
 0x9e82,0x9e87,0x9e88,0x9e8b,0x9e92,0x93d6,0x9e9d,0x9e9f,
 0x9edb,0x9edc,0x9edd,0x9ee0,0x9edf,0x9ee2,0x9ee9,0x9ee7,
 0x9ee5,0x9eea,0x9eef,0x9f22,0x9f2c,0x9f2f,0x9f39,0x9f37,
-0x9f3d,0x9f3e,0x9f44,
+0x9f3d,0x9f3e,0x9f44
 };