[Bug other/79872] document placeholder %K in gcc-internal-format

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79872

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Keywords|                            |diagnostic

--- Comment #3 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
%K is designed to print the inline stack, but I cannot see this documented
anywhere (and as far as I know, only the C++ front-end uses it).