Brief description

Clang-based standalone tool that detects for-loops with postfix operators.

Example

Input:

```c++

include <cstdlib>

include <vector>

inline void doNothing() { // do nothing on purpose }

int main(void) { std::vector<int> v; typedef std::vector<int> intVector;

for (intVector::const_iterator cit = v.begin(); cit != v.end(); cit++) {
    doNothing();
}

for (intVector::const_iterator cit = v.begin(); cit != v.end(); ++cit) {
    doNothing();
}

for (intVector::const_iterator cit = v.begin(); cit != v.end(); cit--) {
    doNothing();
}

for (intVector::const_iterator cit = v.begin(); cit != v.end(); --cit) {
    doNothing();
}

return EXIT_SUCCESS;

}

Run command:

```sh
bin/for-postfix vector-all.cpp --

Output (paths are truncated):

.../vector-all.cpp:17:dangerous use of postfix operator
.../vector-all.cpp:25:dangerous use of postfix operator

Building

1. Clone the repository to llvm/tools/clang/tools/extra.
2. Add add_subdirectory(for-postfix) to CMakeLists.txt in the same directory.
3. Run ninja for-postfix inside your LLVM's build/ directory.