Messages in this thread | | | Date | Wed, 1 Feb 2023 23:15:23 -0700 | From | Nathan Chancellor <> | Subject | Re: [PATCH] f2fs: Fix type of single bit bitfield in f2fs_io_info |
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On Thu, Feb 02, 2023 at 02:13:18PM +0800, Chao Yu wrote: > On 2023/2/2 0:40, Nathan Chancellor wrote: > > Clang warns: > > > > ../fs/f2fs/data.c:995:17: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion] > > fio->submitted = 1; > > ^ ~ > > ../fs/f2fs/data.c:1011:15: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion] > > fio->retry = 1; > > ^ ~ > > > > ../fs/f2fs/segment.c:3320:16: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion] > > fio->in_list = 1; > > ^ ~ > > > > There is not a bug here because the value of these fields is never > > explicitly compared against (just whether it is zero or non-zero) but > > it is easy to silence the warning by using an unsigned type to allow > > an assignment of 0 or 1 without implicit conversion. > > Nathan, thanks a lot for catching this, do you mind letting I merge this fix > into original patch? as the original patch has not been upstreamed yet.
No worries, do whatever you need to! I just care that the problem gets resolved one way or another :)
Cheers, Nathan
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