realloc doesn't preserve content

[matrefeytontias]

"void *realloc(void *ptr, size_t size);
...
The realloc() function changes the size of the memory block pointed to by ptr to size bytes. The contents will be unchanged in the range from the start of the region up to the minimum of the old and new sizes."
Source: http://linux.die.net/man/3/realloc

[Vogtinator]

It should do. Can you provide a test case?

[matrefeytontias]

Mh, so I tried to make a very simple program that demonstrates this but for some reason I can't reproduce it with such program. I'll go with the program where I found this instead, but it's pretty big:

void log_ticks(runloop_state_t *state) {
    int i;
    for(i = 0; i < 40; i++)
        printf("Timer %d index %d\n", i, state->ticks[i].index);
    bkpt();
}

typedef struct
{
    int index;
    int after_cycle;
} timer_tick_t;

[Vogtinator]

I believe I found the bug, it results in a 2 byte offset sometimes,
that's why legimet didn't notice it when testing.
It'll take a moment to solve.

[Vogtinator]

Fixed at 1855adf.

[matrefeytontias]

Yep, fixed.

[Vogtinator]

Great that you found it. It could have been a source of unreasonable bugs...