Change some GCC warnings into errors

Question

In my makefile I specify -Werror=uninitialized, but no errors occur.

I changed it to -Wuninitialized, and I see my warning. -Wno-uninitialized makes it go away as expected, but why isn’t -Werror=uninitialized working?

Also it was suggested in code I write

#pragma GCC diagnostic error "-Wuninitialized"

But that does not work either. Why?

_{I have another question, but unfortunately none of the suggestions are working for me.}

Answer 1

You should use -Werror. This option doesn't have any parameters (it is an on/off switch).

But it is good practice to remove all warnings, so -Werror enforces this good practice.