From 9b98d33d0b76a8c8b23958c89ab7e952893697be Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Sat, 16 Dec 2023 15:49:08 -0700
Subject: Compilation: don't store arena until it's done being used

---
 src/Compilation.zig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/Compilation.zig')

diff --git a/src/Compilation.zig b/src/Compilation.zig
index 7314da3960..d8d8bbc39d 100644
--- a/src/Compilation.zig
+++ b/src/Compilation.zig
@@ -1443,7 +1443,7 @@ pub fn create(gpa: Allocator, options: InitOptions) !*Compilation {
 
         comp.* = .{
             .gpa = gpa,
-            .arena = arena_allocator,
+            .arena = undefined, // populated after we are finished with `arena`
             .module = opt_zcu,
             .cache_use = undefined, // populated below
             .bin_file = null, // populated below
@@ -1667,6 +1667,7 @@ pub fn create(gpa: Allocator, options: InitOptions) !*Compilation {
             },
         }
 
+        comp.arena = arena_allocator;
         break :comp comp;
     };
     errdefer comp.destroy();
-- 
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