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User-Agent: Mozilla/4.76 [en] (X11; U; Linux 2.2.16-22smp i686)


According to the man page, -Wall implies -Wunused-parameter, but tests show
it doesn't.

Reproducible: Always
Steps to Reproduce:
Create a foo.c file the the following line:

int foo(int a) { return 0; }

Then, compile with:

gcc -Wall -c foo.c

You will get no warnings.

If you compile with:

gcc -Wall -Wunused-parameter -c foo.c

Then you get the warning:

foo.c: In function `foo':
foo.c:1: warning: unused parameter `a'

By the way, the -Wunused, which is also supposed to imply
-Wunused-parameter, does not work either.