From 4b5c8d03a94ba3a7fc056be291f3e8d3c1873c66 Mon Sep 17 00:00:00 2001
From: Logan McNaughton <848146+loganmc10@users.noreply.github.com>
Date: Sat, 11 Apr 2026 16:35:04 +0200
Subject: [PATCH] use a const pointer (#732)

---
 retroachievements/retroachievements.c | 4 ++--
 retroachievements/retroachievements.h | 2 +-
 src/device/rdram.rs                   | 2 +-
 src/retroachievements.rs              | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/retroachievements/retroachievements.c b/retroachievements/retroachievements.c
index 501f4be1..f759eb25 100644
--- a/retroachievements/retroachievements.c
+++ b/retroachievements/retroachievements.c
@@ -13,7 +13,7 @@ void store_retroachievements_credentials(const char *username,
                                          const char *token, void *userdata);
 
 rc_client_t *g_client = NULL;
-uint8_t *g_dmem = NULL;
+const uint8_t *g_dmem = NULL;
 size_t g_dmem_size = 0;
 bool g_game_loaded = false;
 bool g_user_logged_in = false;
@@ -149,7 +149,7 @@ void ra_load_game(const uint8_t *rom, size_t rom_size) {
                                          NULL);
 }
 
-void ra_set_dmem(uint8_t *dmem, size_t dmem_size) {
+void ra_set_dmem(const uint8_t *dmem, size_t dmem_size) {
   g_dmem = dmem;
   g_dmem_size = dmem_size;
 }
diff --git a/retroachievements/retroachievements.h b/retroachievements/retroachievements.h
index 8283043b..5e27e156 100644
--- a/retroachievements/retroachievements.h
+++ b/retroachievements/retroachievements.h
@@ -6,7 +6,7 @@ void ra_init_client(bool hardcore);
 void ra_shutdown_client();
 bool ra_get_hardcore();
 void ra_load_game(const uint8_t *rom, size_t rom_size);
-void ra_set_dmem(uint8_t *dmem, size_t dmem_size);
+void ra_set_dmem(const uint8_t *dmem, size_t dmem_size);
 void ra_do_frame();
 void ra_do_idle();
 void ra_http_callback(const char *content, size_t content_size, int status_code,
diff --git a/src/device/rdram.rs b/src/device/rdram.rs
index a66ab3bc..49478006 100644
--- a/src/device/rdram.rs
+++ b/src/device/rdram.rs
@@ -152,7 +152,7 @@ pub fn init(device: &mut device::Device) {
     device.rdram.mem =
         unsafe { Vec::from_raw_parts(ptr, device.rdram.size as usize, device.rdram.size as usize) };
 
-    retroachievements::set_dmem(device.rdram.mem.as_mut_ptr(), device.rdram.size as usize);
+    retroachievements::set_dmem(device.rdram.mem.as_ptr(), device.rdram.size as usize);
 
     // hack, skip RDRAM initialization
     device
diff --git a/src/retroachievements.rs b/src/retroachievements.rs
index 33847409..74771ee7 100644
--- a/src/retroachievements.rs
+++ b/src/retroachievements.rs
@@ -235,7 +235,7 @@ pub fn load_game(rom: &[u8], rom_size: usize) {
     unsafe { ra_load_game(rom.as_ptr(), rom_size) };
 }
 
-pub fn set_dmem(dmem: *mut u8, dmem_size: usize) {
+pub fn set_dmem(dmem: *const u8, dmem_size: usize) {
     unsafe { ra_set_dmem(dmem, dmem_size) };
 }