M CHANGES → CHANGES

@@ -40,6 +40,7 @@ - GB SIO: Fix lockstep failing games aren't reloaded
  - Core: Fix crash when exiting game with cheats loaded
  - GBA Cheats: Fix PARv3 Thumb hooks
  - mGUI: Fix crash if last loaded ROM directory disappears (fixes mgba.io/i/1466)
+ - Libretro: Fix crash changing allowing opposing directions (hhromic)
 Misc:
  - GBA Savedata: EEPROM performance fixes
  - GBA Savedata: Automatically map 1Mbit Flash files as 1Mbit Flash

M src/platform/libretro/libretro.c → src/platform/libretro/libretro.c

@@ -297,7 +297,18 @@ .key = "mgba_allow_opposing_directions",
 			.value = 0
 		};
 		if (environCallback(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
-			((struct GBA*) core->board)->allowOpposingDirections = strcmp(var.value, "yes") == 0;
+			struct GBA* gba = core->board;
+			struct GB* gb = core->board;
+			switch (core->platform(core)) {
+			case PLATFORM_GBA:
+				gba->allowOpposingDirections = strcmp(var.value, "yes") == 0;
+				break;
+			case PLATFORM_GB:
+				gb->allowOpposingDirections = strcmp(var.value, "yes") == 0;
+				break;
+			default:
+				break;
+			}
 		}
 
 		var.key = "mgba_frameskip";