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From: "Jeffrey R.Carter" <spam.jrcarter.not@spam.acm.org.not>
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Subject: Re: GNAT.SHA256 produces result different from sha257sum on Linux
Date: Sat, 4 Nov 2023 16:09:58 +0100
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On 2023-11-04 15:39, wvxvw wrote:
> 
> ❯ ./bin/test_sha --arg foo
> 2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae
> ❯ echo foo | sha256sum -
> b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c  -

I think the problem may be that echo adds an LF:

$ echo foo | hd
00000000  66 6f 6f 0a                                       |foo.|

Since sha256sum expects to work on arbitrary files, it would include the LF in 
its input.

-- 
Jeff Carter
"You can never forget too much about C++."
115