Index: src/os_os2.c
==================================================================
--- src/os_os2.c
+++ src/os_os2.c
@@ -236,10 +236,17 @@
            DosQueryCurrentDisk( &ulDriveNum, &ulDriveMap );
            sprintf( (char*)zTempPath, "%c:", (char)( 'A' + ulDriveNum - 1 ) );
       }
     }
   }
+  /* strip off a trailing slashes or backslashes, otherwise we would get *
+   * multiple (back)slashes which causes DosOpen() to fail               */
+  j = strlen(zTempPath);
+  while( j > 0 && zTempPath[j-1] == '\\' || zTempPath[j-1] == '/' ){
+      j--;
+  }
+  zTempPath[j] = '\0';
   for(;;){
       sprintf( zBuf, "%s\\"TEMP_FILE_PREFIX, zTempPath );
       j = strlen( zBuf );
       sqlite3Randomness( 15, &zBuf[j] );
       for( i = 0; i < 15; i++, j++ ){