From c34c9e3b9aba76764a54b2e404aa1fef0a6a5c58 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Wed, 13 Dec 2023 22:06:43 +0100
Subject: [PATCH] [3.12] gh-112867: fix for WITH_PYMALLOC_RADIX_TREE=0
 (GH-112885) (#113068)

gh-112867: fix for WITH_PYMALLOC_RADIX_TREE=0 (GH-112885)

The _obmalloc_usage structure is only defined if the obmalloc radix tree
is enabled.
(cherry picked from commit 890ce430d94b0b2bccc92a8472b1e1030b4faeb8)

Co-authored-by: Neil Schemenauer <nas-github@arctrix.com>
---
 Include/internal/pycore_obmalloc.h                              | 2 ++
 .../next/Build/2023-12-08-11-33-37.gh-issue-112867.ZzDfXQ.rst   | 1 +
 2 files changed, 3 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Build/2023-12-08-11-33-37.gh-issue-112867.ZzDfXQ.rst

diff --git a/Include/internal/pycore_obmalloc.h b/Include/internal/pycore_obmalloc.h
index ca2a0419b4f..b1c00654ac1 100644
--- a/Include/internal/pycore_obmalloc.h
+++ b/Include/internal/pycore_obmalloc.h
@@ -665,7 +665,9 @@ struct _obmalloc_global_state {
 struct _obmalloc_state {
     struct _obmalloc_pools pools;
     struct _obmalloc_mgmt mgmt;
+#if WITH_PYMALLOC_RADIX_TREE
     struct _obmalloc_usage usage;
+#endif
 };
 
 
diff --git a/Misc/NEWS.d/next/Build/2023-12-08-11-33-37.gh-issue-112867.ZzDfXQ.rst b/Misc/NEWS.d/next/Build/2023-12-08-11-33-37.gh-issue-112867.ZzDfXQ.rst
new file mode 100644
index 00000000000..a3681485488
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2023-12-08-11-33-37.gh-issue-112867.ZzDfXQ.rst
@@ -0,0 +1 @@
+Fix the build for the case that WITH_PYMALLOC_RADIX_TREE=0 set.