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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/92286] Possible improvement for -Wduplicated-cond warning
Date: Mon, 10 Oct 2022 18:59:17 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D92286

David Binderman <dcb314 at hotmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dcb314 at hotmail dot com

--- Comment #4 from David Binderman <dcb314 at hotmail dot com> ---
Is there a simpler case which is worth addressing, where a condition
is a simple opposite of a predecessor ?

Something like:

void f2( int a, int b)
{
        if (a < b)
                g( a);
        else if (a >=3D b)
                g( b);
        else
                g( a + b);
}

Static analyser cppcheck can find this:

feb23b.cc:20:13: style: Expression is always true because 'else if' conditi=
on
is
 opposite to previous condition at line 18. [multiCondition]
 else if (a >=3D b)
            ^
feb23b.cc:18:8: note: first condition
 if (a < b)
       ^
feb23b.cc:20:13: note: else if condition is opposite to first condition
 else if (a >=3D b)
            ^=