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 add_python2_warning

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test_copyop.cpp

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/*

* Copyright 2016 The Emscripten Authors. All rights reserved.

* Emscripten is available under two separate licenses, the MIT license and the

* University of Illinois/NCSA Open Source License. Both these licenses can be

* found in the LICENSE file.

*/

#include <stdio.h>

#include <math.h>

#include <string.h>

struct vec {

double x, y, z;

vec() : x(0), y(0), z(0) {};

vec(const double a, const double b, const double c) : x(a), y(b), z(c) {};

};

struct basis {

vec a, b, c;

basis(const vec& v) {

a = v; // should not touch b!

printf("*%.2f,%.2f,%.2f*\n", b.x, b.y, b.z);

}

};

int main() {

basis B(vec(1, 0, 0));

// Part 2: similar problem with memset and memmove

int x = 1, y = 77, z = 2;

memset((void*)&x, 0, sizeof(int));

memset((void*)&z, 0, sizeof(int));

printf("*%d,%d,%d*\n", x, y, z);

memcpy((void*)&x, (void*)&z, sizeof(int));

memcpy((void*)&z, (void*)&x, sizeof(int));

printf("*%d,%d,%d*\n", x, y, z);

memmove((void*)&x, (void*)&z, sizeof(int));

memmove((void*)&z, (void*)&x, sizeof(int));

printf("*%d,%d,%d*\n", x, y, z);

return 0;

}