86f8445293
Adding Annotation Inference in Lifetime Analysis.
This PR implicitly adds lifetime bound annotations to the AST which is
then used by functions which are parsed later to detect UARs etc.
Example:
```cpp
std::string_view f1(std::string_view a) {
return a;
}
std::string_view f2(std::string_view a) {
return f1(a);
}
std::string_view ff(std::string_view a) {
std::string stack = "something on stack";
return f2(stack); // warning: address of stack memory is returned
}
```
Note:
1. We only add lifetime bound annotations to the functions being
analyzed currently.
2. Currently, both annotation suggestion and inference work
simultaneously. This can be modified based on requirements.
3. The current approach works given that functions are already present
in the correct order (callee-before-caller). For not so ideal cases, we
can create a CallGraph prior to calling the analysis. This can be done
in the next PR.
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