TheRock/compiler/amd-llvm/clang-tools-extra/test/clang-tidy/checkers/modernize/shrink-to-fit.cpp

// RUN: %check_clang_tidy %s modernize-shrink-to-fit %t
#include <vector>

void f() {
  std::vector<int> v;

  std::vector<int>(v).swap(v);
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the shrink_to_fit method should be used to reduce the capacity of a shrinkable container [modernize-shrink-to-fit]
  // CHECK-FIXES: v.shrink_to_fit();

  std::vector<int> &vref = v;
  std::vector<int>(vref).swap(vref);
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the shrink_to_fit method should
  // CHECK-FIXES: vref.shrink_to_fit();

  std::vector<int> *vptr = &v;
  std::vector<int>(*vptr).swap(*vptr);
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the shrink_to_fit method should
  // CHECK-FIXES: vptr->shrink_to_fit();
}

struct X {
  std::vector<int> v;
  void f() {
    std::vector<int>(v).swap(v);
    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: the shrink_to_fit method should
    // CHECK-FIXES: v.shrink_to_fit();

    std::vector<int> *vptr = &v;
    std::vector<int>(*vptr).swap(*vptr);
    // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: the shrink_to_fit method should
    // CHECK-FIXES: vptr->shrink_to_fit();
  }
};

template <typename T> void g() {
  std::vector<int> v;
  std::vector<int>(v).swap(v);
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the shrink_to_fit method should
  // CHECK-FIXES: v.shrink_to_fit();

  std::vector<T> v2;
  std::vector<T>(v2).swap(v2);
  // CHECK-FIXES: std::vector<T>(v2).swap(v2);
}

template <typename T> void g2() {
  std::vector<int> v;
  std::vector<int>(v).swap(v);
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the shrink_to_fit method should
  // CHECK-FIXES: v.shrink_to_fit();

  T v3;
  T(v3).swap(v3);
  // CHECK-FIXES: T(v3).swap(v3);
}

#define COPY_AND_SWAP_INT_VEC(x) std::vector<int>(x).swap(x)
// CHECK-FIXES: #define COPY_AND_SWAP_INT_VEC(x) std::vector<int>(x).swap(x)

void h() {
  g<int>();
  g<double>();
  g<bool>();
  g2<std::vector<int>>();
  std::vector<int> v;
  COPY_AND_SWAP_INT_VEC(v);
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the shrink_to_fit method should
  // CHECK-FIXES: COPY_AND_SWAP_INT_VEC(v);
}

void PR38315() {
  typedef std::vector<int> Vector;
  Vector v;
  Vector(v).swap(v);
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the shrink_to_fit method should
  // CHECK-FIXES: v.shrink_to_fit();

  using Vector2 = std::vector<int>;
  Vector2 v2;
  Vector2(v2).swap(v2);
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: the shrink_to_fit method should
  // CHECK-FIXES: v2.shrink_to_fit();
}