gcc/testsuite/g++.dg/contracts/contracts-pre5.C

// basic test to ensure pre contracts work for free templates
// { dg-do run }
// { dg-options "-std=c++2a -fcontracts -fcontract-continuation-mode=on" }
#include <cstdio>

template<typename T>
int body(int a)
  [[ pre: a > 0 ]]
{
  T t = a * 2.5;
  return t;
}

template<typename T>
int none(int a)
  [[ pre: a > 0 ]]
{
  return -a;
}

template<typename T>
int arg0(T t)
  [[ pre: t > 0 ]]
{
  return -t - 10;
}

template<typename T>
int arg1(int a, T t)
  [[ pre: a > 0 ]]
  [[ pre: t > 0 ]]
{
  return -t * a;
}

template<typename T>
T ret(int a)
  [[ pre: a > 0 ]]
{
  return -a;
}

int main(int, char**)
{
  printf("%d\n", body<int>(-1));
  printf("%d\n", body<double>(-2));
  printf("%d\n", none<int>(-1));
  printf("%d\n", none<double>(-2));
  printf("%d\n", arg0(-1));
  printf("%d\n", arg0(-2.9));
  printf("%d\n", arg1(-3, -1));
  printf("%d\n", arg1(-4, -2.9));
  printf("%d\n", (int)ret<int>(-3));
  printf("%d\n", (int)ret<double>(-4.9));

  return 0;
}

// { dg-output "default std::handle_contract_violation called: .*.C 8 body<int> .*(\n|\r\n|\r)*" }
// { dg-output "-2(\n|\r\n|\r)*" }
// { dg-output "default std::handle_contract_violation called: .*.C 8 body<double> .*(\n|\r\n|\r)*" }
// { dg-output "-5(\n|\r\n|\r)*" }
// { dg-output "default std::handle_contract_violation called: .*.C 16 none<int> .*(\n|\r\n|\r)*" }
// { dg-output "1(\n|\r\n|\r)*" }
// { dg-output "default std::handle_contract_violation called: .*.C 16 none<double> .*(\n|\r\n|\r)*" }
// { dg-output "2(\n|\r\n|\r)*" }
// { dg-output "default std::handle_contract_violation called: .*.C 23 arg0<int> .*(\n|\r\n|\r)*" }
// { dg-output "-9(\n|\r\n|\r)*" }
// { dg-output "default std::handle_contract_violation called: .*.C 23 arg0<double> .*(\n|\r\n|\r)*" }
// { dg-output "-7(\n|\r\n|\r)*" }
// { dg-output "default std::handle_contract_violation called: .*.C 30 arg1<int> .*(\n|\r\n|\r)*" }
// { dg-output "default std::handle_contract_violation called: .*.C 31 arg1<int> .*(\n|\r\n|\r)*" }
// { dg-output "-3(\n|\r\n|\r)*" }
// { dg-output "default std::handle_contract_violation called: .*.C 30 arg1<double> .*(\n|\r\n|\r)*" }
// { dg-output "default std::handle_contract_violation called: .*.C 31 arg1<double> .*(\n|\r\n|\r)*" }
// { dg-output "-11(\n|\r\n|\r)*" }
// { dg-output "default std::handle_contract_violation called: .*.C 38 ret<int> .*(\n|\r\n|\r)*" }
// { dg-output "3(\n|\r\n|\r)*" }
// { dg-output "default std::handle_contract_violation called: .*.C 38 ret<double> .*(\n|\r\n|\r)*" }
// { dg-output "4(\n|\r\n|\r)*" }