I have installed GCC from brew and then linked it and using it in that way. Let me see if I can fix this or not but currently I am using 16.2 command line tools which is not giving me any issue I will upgrade as soon as I get the fix. Thanks

What i am trying to say is this that the problem which I am having is mainly causing after the after of the SDK tools by apple. In 16.2 it is working perfectly fine. I don't think this is the problem of GCC because many mac users use GCC installed from brew only and it is convenient to use. The main issue is what I have figured out in the latest update in one of the header file their is a keyword _Alignof. For C++ this keyword should be like _alignof but it is in the form _Align we use capital A for C not C++ which I got while reading from official GNU C++ site.