https://bugs.gentoo.org/960113
https://gitlab.winehq.org/mono/mono/-/commit/2224c6915a98f870cc9a3a9f9e3698e7b20e3d27

From 2224c6915a98f870cc9a3a9f9e3698e7b20e3d27 Mon Sep 17 00:00:00 2001
From: Esme Povirk <esme@codeweavers.com>
Date: Sat, 12 Apr 2025 20:31:54 +0000
Subject: [PATCH] arm64: Fix a pointer-to-int cast size mismatch.

---
 mono/utils/mono-sigcontext.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/mono/utils/mono-sigcontext.h b/mono/utils/mono-sigcontext.h
index 2153c1cad57..6426f44b7c7 100644
--- a/mono/utils/mono-sigcontext.h
+++ b/mono/utils/mono-sigcontext.h
@@ -492,6 +492,12 @@ typedef struct ucontext {
 	#define UCONTEXT_REG_SP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.sp)
 	#define UCONTEXT_REG_R0(ctx) (((ucontext_t*)(ctx))->uc_mcontext.regs [ARMREG_R0])
 	#define UCONTEXT_GREGS(ctx) (&(((ucontext_t*)(ctx))->uc_mcontext.regs))
+	#define UCONTEXT_REG_SET_PC(ctx, val) do { \
+		UCONTEXT_REG_PC (ctx) = (gsize)(val); \
+		 } while (0)
+	#define UCONTEXT_REG_SET_SP(ctx, val) do { \
+		UCONTEXT_REG_SP (ctx) = (val); \
+		 } while (0)
 #endif
 
 #ifndef UCONTEXT_REG_SET_PC
-- 
GitLab