Remove some unused historical files.
Aggressively disable warnings to keep the lemon source
pristine and avoid the maintenance burden for lemon itself.
Lemon has its own lax policy for warnings that doesn't match our
own and they won't accept external patches to remove the
warnings, so just ignore them. Lemon is just executed to generate
code for the Wireshark build and the minor code issues it has
have no influence at runtime.
For lemon generated code we selectively disable some linting
warnings.
Remove patches for lemon and lempar, they are no longer required
with these changes to silence warnings.
Changes:
- Drop the old basename modification that was present in the Wireshark
version of lemon.c. Use a new option available since 2018-04-20
("Add the -dDIRECTORY command-line option to LEMON.")
- Redo the static analyzer warning fixes, identifying the root causes
and adding assertions instead of hiding code with __clang_analyzer__.
- Ignore compiler warnings instead of adding config.h, _U_, extra const
keywords, unsigned/signed changes, etc.
- Remove lemon.html, it is out-of-date and external links are available.
In order to make future updates easier, document the exact steps that
were followed to create the lemon.c and lempar.c files. Future changes
SHOULD follow the same process.
My process to reach this updated lemon version:
1. Identify previous sync. Found v2.5.2rc0-147-g653af0f6d0 ("lemon: Sync
with latest trunk.") which seems based on sqlite commit 2b3d584ffe.
2. Check successive Wireshark patches. Identified many non-functional
changes to silence compiler warnings and static analyzer issues.
Found one feature (basename) that can be replaced with upstream -d.
3. Write minimal patches and document changes.
Upstream typos and coding style issues (other than trailing whitespace)
were deliberately not fixed to remain as close as possible to upstream.
Change-Id: I606f46dede86e34520f962a9e7163912392aad57
Reviewed-on: https://code.wireshark.org/review/30290
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>
João Valverde