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How to deal with bad_alloc in C++? - Stack Overflow 2 Of course you can catch a bad_alloc, but I think the better question is how you can stop a bad_alloc from happening in the first place Generally, bad_alloc means that something went wrong in an allocation of memory - for example when you are out of memory If your program is 32-bit, then this already happens when you try to allocate >4 GB
c - Difference between malloc and calloc? - Stack Overflow What is the difference between doing: ptr = malloc (MAXELEMS * sizeof (char *)); And: ptr = calloc (MAXELEMS, sizeof (char*)); When is it a good idea to use calloc over malloc or vice versa?
What is the most common reason that bad_alloc is thrown? My understanding is that bad_alloc is thrown whenever the operators new and new [] fail to allocate memory to an object or variable This can happen if you've newed a bunch of objects and forgot to delete them before they got out of scope (i e , your code leaks like crazy) Case 2: Allocating huge amounts of memory in one swoop