[PATCH 00/26] Address a couple of issues identified by Coverity

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I recently registered the git-for-windows fork with Coverity to ensure
that even the Windows-specific patches get some static analysis love.

While at it, I squashed a couple of obvious issues in the part that is
not Windows-specific.

Note: while this patch series squashes some of those issues, the
remaining issues are not necessarily all false positives (e.g. Coverity
getting fooled by our FLEX_ARRAY trick into believing that the last
member of the struct is indeed a 0 or 1 size array) or intentional (e.g.
builtins not releasing memory because exit() is called right after
returning from the function that leaks memory).

Notable examples of the remaining issues are:

- a couple of callers of shorten_unambiguous_ref() assume that they do
  not have to release the memory returned from that function, often
  assigning the pointer to a `const` variable that typically does not
  hold a pointer that needs to be free()d. My hunch is that we will want
  to convert that function to have a fixed number of static buffers and
  use those in a round robin fashion à la sha1_to_hex().

- pack-redundant.c seems to have hard-to-reason-about code paths that
  may eventually leak memory. Essentially, the custody of the allocated
  memory is not clear at all.

- fast-import.c calls strbuf_detach() on the command_buf without any
  obvious rationale. Turns out that *some* code paths assign
  command_buf.buf to a `recent_command` which releases the buffer later.
  However, from a cursory look it appears to me as if there are some
  other code paths that skip that assignment, effectively causing a memory
  leak once strbuf_detach() is called.

Sadly, I lack the time to pursue those remaining issues further.


Johannes Schindelin (26):
  mingw: avoid memory leak when splitting PATH
  winansi: avoid use of uninitialized value
  winansi: avoid buffer overrun
  add_commit_patch_id(): avoid allocating memory unnecessarily
  git_config_rename_section_in_file(): avoid resource leak
  get_mail_commit_oid(): avoid resource leak
  http-backend: avoid memory leaks
  difftool: close file descriptors after reading
  status: close file descriptor after reading git-rebase-todo
  Check for EOF while parsing mails
  cat-file: fix memory leak
  checkout: fix memory leak
  split_commit_in_progress(): fix memory leak
  setup_bare_git_dir(): fix memory leak
  setup_discovered_git_dir(): fix memory leak
  pack-redundant: plug memory leak
  mktree: plug memory leaks reported by Coverity
  fast-export: avoid leaking memory in handle_tag()
  receive-pack: plug memory leak in update()
  line-log: avoid memory leak
  shallow: avoid memory leak
  add_reflog_for_walk: avoid memory leak
  remote: plug memory leak in match_explicit()
  name-rev: avoid leaking memory in the `deref` case
  show_worktree(): plug memory leak
  submodule_uses_worktrees(): plug memory leak

 builtin/am.c             | 11 ++++++-----
 builtin/cat-file.c       |  1 +
 builtin/checkout.c       |  1 +
 builtin/difftool.c       |  2 ++
 builtin/fast-export.c    |  1 +
 builtin/mailsplit.c      |  2 +-
 builtin/mktree.c         |  5 +++--
 builtin/name-rev.c       |  7 +++++--
 builtin/pack-redundant.c |  1 +
 builtin/receive-pack.c   |  4 +++-
 builtin/worktree.c       |  8 +++++---
 compat/mingw.c           |  4 +++-
 compat/winansi.c         |  7 +++++++
 config.c                 |  5 ++++-
 http-backend.c           |  6 +++++-
 line-log.c               |  1 +
 mailinfo.c               |  2 +-
 patch-ids.c              |  3 ++-
 reflog-walk.c            |  6 +++++-
 remote.c                 |  5 +++--
 setup.c                  | 11 ++++++++---
 shallow.c                |  8 ++++++--
 worktree.c               |  2 +-
 wt-status.c              |  8 +++++++-
 24 files changed, 82 insertions(+), 29 deletions(-)


base-commit: e2cb6ab84c94f147f1259260961513b40c36108a
Published-As: https://github.com/dscho/git/releases/tag/coverity-v1
Fetch-It-Via: git fetch https://github.com/dscho/git coverity-v1

-- 
2.12.2.windows.2.800.gede8f145e06

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