Add an initial Clang-Tidy configuration file which checks for recursion
and various clang analyzer issues.
Run Clang-Tidy in the "Clang + Code Checks" merge request job.
Add NOLINT suppressions where needed in wsutil, epan, and lemon.
wmem_tree currently returns NULL for lookups of strings with
a NULL tree, but tries to dereference the tree and crashes when
looking up integers with a NULL tree. Return NULL (or FALSE, for
contains32()) for a tree that doesn't exist, making it easier to
lazily create a tree only when inserting an entry.
We want to do more sophisticated processing of UTF-8 in wmem and
for that we want to use the unicode utility functions in wsutil.
We also want to use wmem scoped memory in wsutil unicode utility
functions.
This introduces a circular dependency. Fix that by making both
the same library and removing the sanitary cordon separating
them.
We still need to be mindful of public header depencies of wmem on
wsutil because wmem.h is included in wireshark.h and we want to
be parsimonious with the use of global includes.
This allows wmem to be used from other libraries, namely wsutil.
It is often the case that a funtion exists in wsutil and cannot
be used with a wmem scope, requiring some code duplication or
extra memory allocations, or vice-versa, code in epan cannot be
moved to wsutil because it has a wmem dependency.
To this end wmem is moved to wsutil. Scope management remains part
of epan because those scope semantics are specific to dissection.
Gerald Combs