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List:       perl5-porters
Subject:    yet another gcc warning tip: use -W, too
From:       Jarkko Hietaniemi <jhietaniemi () gmail ! com>
Date:       2006-04-30 7:19:56
Message-ID: 4454651C.2080700 () gmail ! com
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$ cat x.c
int foo(int x, int y) {
  return x * x;
}

int main() {
  return foo(3, 4);
}
$ gcc -Wall x.c
$ gcc -Wall -W x.c
x.c: In function `foo':
x.c:1: warning: unused parameter `y'
$

In newer gccs (don't know exactly since when) the -W has
a new alternate name, -Wextra.

The -W(extra) turns on also other things, see the fine manual.

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