Some things from GCC 5

[bearophile via Digitalmars-d]

> A new command-line option -Wlogical-not-parentheses has been 
> added for the C and C++ compilers, which warns about "logical 
> not" used on the left hand side operand of a comparison.
>
> bool not_equal(int x, int y) {
>   return !x == y;  // warn here
> }
>
> return !(x == y);  // first fix-it, to negate comparison.
>
> return (!x) == y;  // second fix-it, to silence warning.

I'll wait for your opinions before asking for this error in D.


> New warnings -Wsuggest-final-types and -Wsuggest-final-methods 
> helps developers to annotate programs by final specifiers (or 
> anonymous namespaces) in the cases where code generation 
> improves. These warnings can be used at compile time, but they 
> are more useful in combination with link-time optimization.
>
> Some info:
> https://gcc.gnu.org/ml/gcc-patches/2014-08/msg00119.html

I have added this to Bugzilla, it can please the "final on 
default" crowd:
https://issues.dlang.org/show_bug.cgi?id=13798

Bye,
bearophile