[Buildroot] [Bug 15976] New: .hash file requires newline to process correctly

[bugzilla@busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=15976

            Bug ID: 15976
           Summary: .hash file requires newline to process correctly
           Product: buildroot
           Version: 2023.02.9
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: minor
          Priority: P5
         Component: Other
          Assignee: unassigned@buildroot.uclibc.org
          Reporter: masonwardle@gmail.com
                CC: buildroot@uclibc.org
  Target Milestone: ---

I have a <package-name>.hash file with

# Calculated by hand
sha256  <64 hex character hash>  <downloaded package name>



I failed to put a newline at the end of the file. This caused
support/download/check-hash to fail with a "No hash found" error. A quick look
at the code suggests this error occurs in my case because the "read" command
exits abnormally if it reaches the end of the file before encountering a
newline.

I initially thought this could be addressed in the documentation but perhaps
there is a simple fix. 

I'm running buildroot 2023.02.9 on Ubuntu 22.04. check-hash hasn't changed
since that release.

Thanks!

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