The problem is that one also needs to process the compiler output in an IDE...

I believe you enable it with `-demangle=dlang`

The original announcement is here:  https://forum...

it is not, clearly ;)

is there a way to check feature availability? What version gdb should have etc?

It should be automatic when the executable is build with debugging info. `-g`

-- 
Mike Wey

But how to enable it? It doesn't work out of box at least for...

...but actually i still feed GDB output with ddemangle too (for Coedit 'GDB commander' widget).

You are aware that gdb has built-in support for demangling D for 3-4...

...raise.c: No such file or directory.
(gdb) bt
#0  0x00007ffff5040428 in __GI_raise (sig...

Nice work.