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safe array

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add extra safety checks to array_realloc
This commit is contained in:
Sander Speetjens
2024-08-07 23:17:06 +02:00
parent 1d1d9c62cb
commit eeef4e4752
1 changed files with 10 additions and 1 deletions
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9
src/safe_array.c
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@@ -49,6 +49,15 @@ array_t *array_realloc(array_t* arr, size_t rows)
fprintf(stderr, "%s: ptr dereferences to NULL\n", __func__); fprintf(stderr, "%s: ptr dereferences to NULL\n", __func__);
return NULL; return NULL;
} }
if (arr->rows > rows)
{
fprintf(stderr, "%s: arr->rows (%d) > rows (%d)\n", __func__, arr->rows, rows);
return NULL;
}
if (arr->rows == rows)
{
return arr;
}
array_t *new_arr = realloc(arr, sizeof(array_t) + (arr->size * rows - 1)); array_t *new_arr = realloc(arr, sizeof(array_t) + (arr->size * rows - 1));
if (!new_arr) if (!new_arr)