Re: realloc() - frequency, conditions, or experiences about relocation?

Am 18.06.2024 um 01:39 schrieb Keith Thompson:

I have a small test program that uses realloc() to expand a 1-byte
allocated buffer to 2 bytes, then 3, then 4, and so on.  In one
implementation, in one test run, it reallocates at 25 bytes, and
then not again until just over 128 kbytes.  Other implementations
behave differently.

Usually you don't expand a dynamic array byte per byte. Normaly you
expand it like a C++ vector whose capacity doubles with libstdc++
and libc++ (MSVC adds 50% to the capacity before).