M CHANGES → CHANGES

@@ -30,6 +30,7 @@ - 3DS: Redo video sync to be more precise
  - 3DS: Fix crash with libctru 2.0 when exiting
  - All: Improve export headers (fixes mgba.io/i/1738)
  - Core: Ensure ELF regions can be written before trying
+ - Core: Fix reported ROM size when a fixed buffer size is used
  - Debugger: Don't skip undefined instructions when debugger attached
  - FFmpeg: Fix some small memory leaks
  - FFmpeg: Fix encoding of time base

M src/core/core.c → src/core/core.c

@@ -145,7 +145,10 @@
 #ifdef FIXED_ROM_BUFFER
 	extern uint32_t* romBuffer;
 	extern size_t romBufferSize;
-	vfm = VFileFromMemory(romBuffer, romBufferSize);
+	if (size > romBufferSize) {
+		size = romBufferSize;
+	}
+	vfm = VFileFromMemory(romBuffer, size);
 #else
 	vfm = VFileMemChunk(NULL, size);
 #endif