From 41ec5a770f85f3825852835888bada35c8107814 Mon Sep 17 00:00:00 2001
From: Dennis Ranke <dennis.ranke@gmail.com>
Date: Mon, 8 Nov 2021 23:15:29 +0100
Subject: [PATCH] only emit global section when not empty

---
 random.cwa  | 17 ++---------------
 src/emit.rs |  4 +++-
 2 files changed, 5 insertions(+), 16 deletions(-)

diff --git a/random.cwa b/random.cwa
index 73c61c5..0127ce6 100644
--- a/random.cwa
+++ b/random.cwa
@@ -1,19 +1,6 @@
 import "env.memory" memory(4);
-
-global mut randomState: i32 = 37;
-
-fn random() -> i32 {
-    let state: i32;
-    randomState = (state := (
-                          state := randomState ^ (randomState << 13)
-                      ) ^ (state >> 17)
-                  ) ^ (state << 5);
-    randomState * 625341585
-}
-
-fn seed(s: i32) {
-    randomState = (((s + !(s >> 31)) as i64 * 8445297036689579347i64) >> 31i64) as i32;
-}
+import "env.random" fn random() -> i32;
+import "env.randomSeed" fn seed(i32);
 
 export fn tic(time: i32) {
     let i: i32;
diff --git a/src/emit.rs b/src/emit.rs
index e7926bb..88aaab8 100644
--- a/src/emit.rs
+++ b/src/emit.rs
@@ -112,7 +112,9 @@ pub fn emit(script: &ast::Script) -> Vec<u8> {
         }
 
         module.section(&functions);
-        module.section(&global_section);
+        if !script.global_vars.is_empty() {
+            module.section(&global_section);
+        }
         module.section(&exports);
         module.section(&code);
     }