blob: bbbae3420a08063b7f6a4408a4ccf8779a1c3120 [file] [log] [blame]
/*
* 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;
}