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fix write_ff bug. #15

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fix write_ff bug. #15

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lvzixun
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@lvzixun lvzixun commented Oct 14, 2014

testcase：

local data = "\1\2\0\0\5\0\7\8\1\2\3\4\5\6\7\8\9\10\11\12\13\14"
core.pack(data)

当最后在执行write_ff时，由于ff_n为2 memcpy时的长度是16，但是src剩下的长度只有14（需补0），这时将会对src造成最多2字节的内存访问越界。

@lvzixun lvzixun closed this Oct 14, 2014
@spin6lock spin6lock mentioned this pull request Jun 15, 2018
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@lvzixun lvzixun mentioned this pull request Jun 19, 2020
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