source: src/examples/alloc.c @ 784deab

extern "C" {
    typedef long unsigned int size_t;
    void *malloc( size_t size );
    void *calloc( size_t nmemb, size_t size );
    void *realloc( void *ptr, size_t size );
    void *memset( void *s, int c, size_t n );
    void free( void * ptr );
    int printf( const char *, ... );
}

forall( type T ) T * malloc( void ) {
    return (T *)malloc( sizeof(T) );
}
forall( type T ) T * calloc( size_t size ) {
    return (T *)calloc( size, sizeof(T) );
}
forall( type T ) T * realloc( T *ptr, size_t n ) {
    return (T *)(void *)realloc( ptr, sizeof(T) );
}
forall( type T ) T * realloc( T *ptr, size_t n, T c ) {
    return (T *)realloc( ptr, n );
}

int *foo( int *p, int c );
int *bar( int *p, int c );
int *baz( int *p, int c );

int main( void ) {
    size_t size = 10;
    int * x = malloc();
    x = malloc();
    x = calloc( 10 );                                   // calloc: array set to 0
    x = realloc( x, 10 );
    x = realloc( x, 10, '\0' );
    x = malloc( 5 );
    float *fp = malloc() + 1;

    struct St1 { int x; double y; };
    struct St1 * st1;
    double *y;
    x = realloc( st1, 10 );                             // SHOULD FAIL!!
#if 0
    int *p;
    p = foo( bar( baz( malloc(), 0 ), 0 ), 0 );
    free( p );

    struct St2 { int x; double y; };
    struct St2 * st2;

    y = malloc();
    st1 = malloc();
//    st1 = realloc( st2, 10, st1 );
  
    *y = 1.0;
    printf("%f\n", *y);

    st1->x = *x + 1;
    st1->y = *y *1.5;
    printf("{ %d, %f }\n", st1->x, st1->y);

    free( y );
  
    x = malloc( 10 );
    for ( int i = 0; i < 10; i += 1 ) {
        x[i] = i * 10;
    }
    for ( int j = 0; j < 10; j += 1 ) {
        printf( "x[%d] = %d\n", j, x[j] );
    }
    free( x );
#endif
}