From e8ef39c76b6bf5ef7397b130a715b8d7b7c54321 Mon Sep 17 00:00:00 2001
From: Justin Ethier <justin.ethier@gmail.com>
Date: Tue, 17 Nov 2020 22:45:40 -0500
Subject: [PATCH] Issue #422 - Fix compilation error

---
 CHANGELOG.md | 6 ++++++
 runtime.c    | 3 ++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4f36447e..fed847b7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 0.23 - TBD
+
+Bug Fixes
+
+- Fixed compilation error in `runtime.c` on Raspberry Pi / ARM.
+
 ## 0.22 - November 3, 2020
 
 Features
diff --git a/runtime.c b/runtime.c
index c25f81a6..44420d26 100644
--- a/runtime.c
+++ b/runtime.c
@@ -6607,6 +6607,7 @@ void *gc_alloc_pair(gc_thread_data *data, object head, object tail)
  */
 void *Cyc_init_thread(object thread_and_thunk, int argc, object *args)
 {
+  int i;
   vector_type *t;
   c_opaque_type *o;
   object op, parent, child, tmp;
@@ -6636,7 +6637,7 @@ void *Cyc_init_thread(object thread_and_thunk, int argc, object *args)
 
   if (argc > 0) {
     thd->gc_num_args = argc + 1;
-    for (int i = 0; i < argc; i++) {
+    for (i = 0; i < argc; i++) {
       thd->gc_args[i + 1] = args[i];
     }
   }