[dovecot/core] 421973: lib: Small code cleanup to istream-concat - don't ...

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: 421973339968d444d4433cb4d47d1f150e4ab288
      https://github.com/dovecot/core/commit/421973339968d444d4433cb4d47d1f150e4ab288
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2016-03-21 (Mon, 21 Mar 2016)

  Changed paths:
    M src/lib/istream-concat.c

  Log Message:
  -----------
  lib: Small code cleanup to istream-concat - don't use a magic UINT_MAX value as error code


  Commit: 65d8efa66dca27db85f74ee2574188b51569a4c2
      https://github.com/dovecot/core/commit/65d8efa66dca27db85f74ee2574188b51569a4c2
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2016-03-21 (Mon, 21 Mar 2016)

  Changed paths:
    M src/lib/istream-concat.c

  Log Message:
  -----------
  lib: Avoid assert-crash in istream-concat at close.

If stream was seeked to EOF, cur_input=NULL and closing the stream would cause
i_stream_concat_skip() to crash. Fixed this by making sure cur_input is never NULL.
This also adds a check to not allow seeking past EOF, but this shouldn't happen anyway.


Compare: https://github.com/dovecot/core/compare/25866546f1e8...65d8efa66dca