Improved savefile error handling:

* New flush() method in WriteStream class to flush pending I/O, in order
  to detect any I/O errors

* Use of flush() and ioFailed() added to scumm engine save function

* Dreamcast backend extended to support the new checks

svn-id: r19066

1 files changed, 6 insertions, 0 deletions

diff --git a/scumm/saveload.cpp b/scumm/saveload.cpp
index 5252402ec8..3b426358c7 100644
--- a/scumm/saveload.cpp
+++ b/scumm/saveload.cpp
@@ -109,6 +109,12 @@ bool ScummEngine::saveState(int slot, bool compat) {
 
 	Serializer ser(0, out, CURRENT_VER);
 	saveOrLoad(&ser, CURRENT_VER);
+	out->flush();
+	if(out->ioFailed()) {
+		delete out;
+		debug(1, "State save as '%s' FAILED", filename);
+		return false;
+	}
 	delete out;
 	debug(1, "State saved as '%s'", filename);
 	return true;