This bellow code will generate Aborted (core dumped) at last line. code: output is: Here I’m interested to know in which cases these core dumped will occur? Can we find out at which line this is occurred without using debugger? what information it is showing(about shared libraries)?
You likely forgot to #include <stdlib.h>
OK, so I’ve managed to overcome this issue. First of all – A practical cause to “corrupted size vs. prev_size” is quite simple – memory chunk control structure fields in the adjacent following chunk are being overwritten due to out-of-bounds access by the code. if you allocate x bytes for pointer p but wind up writing beyond x in regards to … Read more
jemalloc first appeared for FreeBSD, the brainchild of one “Jason Evans”, hence the “je”. I would ridicule him for being egotistical had I not once written an operating system called paxos 🙂 See this PDF for full details. It’s a white paper describing in detail how the algorithms work. The main benefit is scalability in multi-processor and multi-threaded systems achieved, … Read more
Trying to understand memory allocation in C. Facing issue while trying to create two arrays using pointer to integers. Kindly have a look at the below code: I am working with C11 on CLion. Facing below error on runtime. Can someone please explain what is wrong with this code ? “b is being shown NULL … Read more
calloc() gives you a zero-initialized buffer, while malloc() leaves the memory uninitialized. For large allocations, most calloc implementations under mainstream OSes will get known-zeroed pages from the OS (e.g. via POSIX mmap(MAP_ANONYMOUS) or Windows VirtualAlloc) so it doesn’t need to write them in user-space. This is how normal malloc gets more pages from the OS as well; calloc just takes advantage of the OS’s guarantee. This means calloc memory … Read more
Presumably you mean heap from a memory allocation point of view, not from a data structure point of view (the term has multiple meanings). A very simple explanation is that the heap is the portion of memory where dynamically allocated memory resides (i.e. memory allocated via malloc). Memory allocated from the heap will remain allocated … Read more