Bug#986136: perl: shasum treats read errors like end of file

[gregor herrmann]

Control: clone -1 libdigest-sha-perl 6.02-1

On Tue, 30 Mar 2021 11:43:43 +0200, Stefan Arnold wrote:

> I noticed his while testing with an filesystem that should give "read error" at
> a certain point which did not happen but instead gives a hash output. The
> easiest way to reproduce is shasuming a folder:
> 
> strace -e trace=read shasum 0</tmp
> ...
> read(0, 0x56421603f620, 8192)           = -1 EISDIR (Ist ein Verzeichnis)
> da39a3ee5e6b4b0d3255bfef95601890afd80709  -
> +++ exited with 0 +++
> 
> 
> Read gives a read error but shasum does not pass it.

Thanks for your bug report.

This seems to happen in Digest::SHA, but I leave the detailed
investigation to someone faster :)

I note that both /usr/bin/shasum and Digest::SHA are in both src:perl
and libdigest-sha-perl, hence cloning the bug.


Cheers,
gregor

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