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C: Correctly freeing memory of a multi-dimensional array

If `malloc(0)` returns a non-null pointer, can I pass that to `free`?

If free() knows the length of my array, why can't I ask for it in my own code?

c memory free malloc

Should one really set pointers to `NULL` after freeing them?

c pointers free

Is this a good way to free memory?

c memory free

Will malloc implementations return free-ed memory back to the system?

free malloc glibc mmap tcmalloc

How do free and malloc work in C?

c memory free malloc

Free memory allocated in a different function?

Unable to free const pointers in C

c constants free

Why cast free's return value to void?

c casting free void legacy-code

Why does `free` in C not take the number of bytes to be freed?

How to track down a "double free or corruption" error

c++ c debugging free

Does free(ptr) where ptr is NULL corrupt memory?

Setting variable to NULL after free

How do malloc() and free() work?

How does free know how much to free?

c size pointers free

What REALLY happens when you don't free after malloc?

c malloc free