+ Bug when writing a file. The writing to the file causes the file size to exceed the size of yaffs file system memory.
+ Output of test:
+ test_yaffs_write_big_file
+ AddrToChunk of offset -2147483648 gives chunk -1048576 start 0
+ AddrToChunk of offset -2147481600 gives chunk -1048575 start 0
+ AddrToChunk of offset -2147479552 gives chunk -1048574 start 0
+ AddrToChunk of offset -2147477504 gives chunk -1048573 start 0
+ AddrToChunk of offset -2147475456 gives chunk -1048572 start 0
+ AddrToChunk of offset -2147473408 gives chunk -1048571 start 0
+ AddrToChunk of offset -2147471360 gives chunk -1048570 start 0
+ AddrToChunk of offset -2147469312 gives chunk -1048569 start 0
+ AddrToChunk of offset -2147467264 gives chunk -1048568 start 0
+ AddrToChunk of offset -2147465216 gives chunk -1048567 start 0
+ wrote a large amount of text to a file.(which is a bad thing)
+ test: test_yaffs_write_big_file failed
+ yaffs_error code 0
+ error is : Unknown error code
+
+