Do I need -pedantic flag from GCC with C11?

Question

I\'m currently running Linux Mint on my Machine with GCC-5.3 because C11 is included default.

I started learning C fo

Answer 1

From the formal point of view, if you are planning to write your code in standard C you definitely need -pedantic flag (moreover, -pedantic-errors might be even better idea). However, the original implementation of -pedantic suffered from one rather questionable design decision: it included warnings related to implementation limits (which is OK), and on top of that it also turned them into errors in -pedantic-errors mode (which, in my opinion, is unacceptable).

Warnings about implementation limits might be useful, but still it might be a good idea to keep them controllable independently, keeping -pedantic reserved for straightforward constraint violations.

The fact that you no longer see warnings about implementation limits with -pedantic might mean that GCC 5 finally decided to take care of this matter. If so, it would be a welcome change (but more likely it is the limits that changed).