gcc/testsuite/g++.dg/warn/Wreal-conversion-1.C

// { dg-do compile }
// { dg-options "-Wreal-conversion" }

#include <stddef.h>

int func1(int a) {
  double f = a;
  return f;           // { dg-warning "conversion to" }
}

double func3();

void func2() {
  double g = 3.14;
  float f = 1.8f;
  int t = g;          // { dg-warning "conversion to" }
  bool b = g;
  int p;
  p = f;              // { dg-warning "conversion to" }
  func1(g);           // { dg-warning "conversion to" }
  char c = f;         // { dg-warning "conversion to" }
  c = p;
  int q;
  q = func3();        // { dg-warning "conversion to" }
}