• Paul Eggert's avatar
    emacs_write: Return size_t, not ssize_t, to avoid overflow issues. · 273a5f82
    Paul Eggert authored
    * gnutls.c, gnutls.h (emacs_gnutls_write): Return size_t, not ssize_t.
    * sysdep.c, lisp.h (emacs_write): Likewise.
    Without the above change, emacs_gnutls_write and emacs_write had
    undefined behavior and would typically mistakenly report an error
    when writing a buffer whose size exceeds SSIZE_MAX.
    (emacs_read, emacs_write): Remove check for negative size, as the
    Emacs source code has been audited now.
    (emacs_write): Adjust to new signature, making the code look more
    like that of emacs_gnutls_write.
    * process.c (send_process): Adjust to the new signatures of
    emacs_write and emacs_gnutls_write.  Do not attempt to store
    a byte offset into an 'int'; it might overflow.
lisp.h 127 KB