C / C++ / MFC

Renato Carvalho wrote:

But, in fact, when it runs, the 3ª instruction fails with an access violation.

DavidCrow wrote:

prasad_som wrote:
Anyway, OP's problem was addressed in my reply.


Actually it wasn't

Renato Carvalho wrote:

j = test(w);

int test (tpteste ** l)
{
    *l = new tpteste[4];
    (*l)[0].i = 99;
    (*l)[1].i = 98;
    (*l)[2].i = 97;
    (*l)[3].i = 96;

    return 0;
}

int doNothing(void) {
    int j = 0;
    tpteste w;  //not a pointer anymore at this point
    j = test(&w);
    return 0;
}

typedef struct {
    int i;
} tpteste;
 
void test (tpteste** l) {
    *l = new tpteste[4];
    l[0].i = 99;
    l[1].i = 98;
    l[2].i = 97;
    l[3].i = 96;
}
 
void doNothing(void) {
    tpteste* w;
    test(&w);
}

void test( int *num )
{
    num = new int;
    *num = 5;
}
 
void main( void )
{
    int *x = NULL;
    test(x);
}

struct tpteste
{
    int i;
};
 
void test( tpteste **l )
{
    tpteste *t = new tpteste[4]; // you could also allocate directly to l

    t[0].i = 99;
    t[1].i = 98;
    t[2].i = 97;
    t[3].i = 96;
 
    *l = t;
}
 
void doNothing( void )
{
    tpteste *w = NULL;
    test(&w);
}

toxcct wrote:

why on earth are your sources R/O, and why do you think you can modify a R/O file ?

remove the flag first in the file properties, then edit it