From man realloc:The realloc() function returns a pointer to the newly allocated memory, which is suitably aligned for any kind of variable and may be different from ptr, or NULL if the request

Dec 7, 2012 · Both code are very problematic, if you use the same pointer to send and receive from realloc, if it fails, you will lose your pointer to free it later. you should do some thing like this :

Jan 14, 2020 · How does realloc() reallocate the memory which was first allocated by malloc()? I know that you need to use malloc() before you´re able to reallocate the memory, but I don´t understand …

Aug 16, 2011 · Simple question about the realloc function in C: If I use realloc to shrink the memory block that a pointer is pointing to, does the "extra" memory get freed? Or does it need to be freed …

11 C requires that the pointer passed to realloc must be a pointer obtained from malloc, calloc or realloc function call (or a null pointer).

Aug 14, 2018 · O realloc() é um malloc() que muda o tamanho alocado anteriormente. Um bom algoritmo tenta aumentar seu tamanho sem mudar a sua localização, mas nem sempre é possível, …

Feb 10, 2014 · 5 realloc() is used to increase or decrease the memory and not to free the memory. Check this, and use free() to release the memory (link).

Aug 14, 2010 · If you want to do resizeable buffers the C way, use malloc / free / realloc, which are available in C++. If you want to do resizeable buffers the C++ way, use a vector (or deque, if you …

char *newline = realloc ( oldline , newsize ); // Assuming oldline is the pointer to which the starting address // of the memory which malloc() has returned, is assigned and, // say, newsize is integer …

Feb 18, 2017 · If you give realloc an uninitialized pointer, it would think it was a valid pointer (a pointer is a pointer, all realloc can do is trust you). This implementation would then try to interpret the few bytes …