From e27bc7b311561ad36045000cb74038cccc70cf25 Mon Sep 17 00:00:00 2001
From: Benoit Giannangeli <giann008@gmail.com>
Date: Wed, 13 Nov 2024 08:43:15 +0100
Subject: [PATCH] fix(vm): OP_DEFINE_GLOBAL would exand globals slice to far

closes #314
---
 src/vm.zig | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/vm.zig b/src/vm.zig
index 9ae615d3..02e4445a 100644
--- a/src/vm.zig
+++ b/src/vm.zig
@@ -446,6 +446,7 @@ pub const VM = struct {
     current_fiber: *Fiber,
     current_ast: Ast,
     globals: std.ArrayList(Value),
+    // FIXME: remove
     globals_count: usize = 0,
     import_registry: *ImportRegistry,
     jit: ?JIT = null,
@@ -1034,8 +1035,9 @@ pub const VM = struct {
             self.panic("Out of memory");
             unreachable;
         };
-        self.globals.expandToCapacity();
+        self.globals.items.len = arg + 1;
         self.globals.items[arg] = self.peek(0);
+
         self.globals_count = @max(self.globals_count, arg);
         _ = self.pop();
 
@@ -2182,6 +2184,7 @@ pub const VM = struct {
                         self.panic("Out of memory");
                         unreachable;
                     };
+
                     import_cache.append(global) catch {
                         self.panic("Out of memory");
                         unreachable;