* windows-nat.c (windows_xfer_memory): Handle ERROR_PARTIAL_COPY

error code.

gdb/ChangeLog

@@ -1,3 +1,8 @@
+2013-09-02  Pierre Muller  <muller@sourceware.org>
+
+	* windows-nat.c (windows_xfer_memory): Handle ERROR_PARTIAL_COPY
+	error code.
+
 2013-09-02  Pierre Muller  <muller@sourceware.org>
 
 	* windows-nat.c (windows_xfer_memory): Fix compilation failure

gdb/windows-nat.c

@@ -2324,6 +2324,7 @@ windows_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf,
 {
   SIZE_T done = 0;
   BOOL success;
+  DWORD lasterror = 0;
 
   if (writebuf != NULL)
     {
@@ -2332,6 +2333,8 @@ windows_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf,
       success = WriteProcessMemory (current_process_handle,
 				    (LPVOID) (uintptr_t) memaddr, writebuf,
 				    len, &done);
+      if (!success)
+       lasterror = GetLastError ();
       FlushInstructionCache (current_process_handle,
 			     (LPCVOID) (uintptr_t) memaddr, len);
     }
@@ -2342,8 +2345,13 @@ windows_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf,
       success = ReadProcessMemory (current_process_handle,
 				   (LPCVOID) (uintptr_t) memaddr, readbuf,
 				   len, &done);
+      if (!success)
+       lasterror = GetLastError ();
     }
-  return success ? done : TARGET_XFER_E_IO;
+  if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0)
+    return done;
+  else
+    return success ? done : TARGET_XFER_E_IO;
 }
 
 static void