When tests are built, the minimum required cmake version is 3.4.
The file test/CMakeLists.txt uses cmake_policy(SET CMP0064 NEW),
which requires cmake 3.4 [1].
[1] https://cmake.org/cmake/help/v3.4/policy/CMP0064.html
This will now warn when doing something like this:
```cpp
template <class T, class K, class V>
const V& get_default(const T& t, const K& k, const V& v) {
auto it = t.find(k);
if (it == t.end()) return v;
return it->second;
}
const int& bar(const std::unordered_map<int, int>& m, int k) {
auto x = 0;
return get_default(m, k, x);
}
```
The lifetime warning is considered inconclusive in this case.
I also updated valueflow to no tinject inconclusive values unless `--inconclusive` flag is passed. This creates some false negatives because library functions are not configured to not modify their input parameters, and there are some checks that do not check if the value is inconclusive or not.
A few source files were added because of the feature request "Ability to
exclude files and directories from checks".
6401271ceb
A CMake build script was updated for these changes.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Wolfgang Stöggl
KenPatrickLehrmann
Paul Fultz II
Daniel Marjamäki
Frank Zingsheim
Alexander Mai
Luis Díaz Más
Daniel Marjamäki
Markus Elfring
Sebastien Debrard
Kimmo Varis