[nmh-commits] [SCM] The nmh Mail Handling System branch, master, updated. 1.7-branchpoint-736-gfd3910e

[Ralph Corderoy]

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- Log -----------------------------------------------------------------
commit fd3910e3f5d137e0c2938d33c39effd677444419
Author: Ralph Corderoy <ralph@inputplus.co.uk>
Date:   Sun May 23 14:32:39 2021 +0100

    sbr/utils.c: add abortcpy() which prefers to abort than to overflow.
    
    This is the partner to trunccpy().  If truncation is valid, e.g. passing
    on the first part of a long string in an error message, then trunccpy()
    should be used instead of strncpy(3).  Else abortcpy() should be used
    as it will abort(3) rather than overflow the destination or leave the
    destination not terminated.
    
    (strncpy() is rarely wanted as its NUL-padding is only useful to pad
    fixed-width fields, e.g. an old 14-byte filename which sits alongside
    the 16-bit inode number in a directory entry.)
    
    The creation of abortcpy() and its environment-variable workaround was
    discussed on nmh-workers around 2016-10-29, in particular message-ID
    <20161029214059.1046247BE8@pb-smtp2.pobox.com> at 21:40:58 UTC.

-----------------------------------------------------------------------

Summary of changes:
 sbr/utils.c | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++---------
 sbr/utils.h |  8 +++++--
 2 files changed, 65 insertions(+), 12 deletions(-)


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