Review debug message generation

[Jonathan Wakely]

On 09/11/16 22:36 +0100, François Dumont wrote:
>Hi
>
>    Here is a proposal to review how we generate the debug output in 
>case of assertion failure. It removes usage of format_word which, as a 
>side effect will fix PR 77459. Should I reference this PR in the 
>ChangeLog ?

Please do either mention the PR in the ChangeLog, or just put a note
in the bugzilla PR that says "fixed by rNNNNN" with the SVN commit
number, to make it easier to know what fixed it.

>    I introduced a print_literal function to avoid using strlen on 
>them. I know that gcc optimizes calls to strlen on literals but in our 
>case we were not directly calling it on the literals.
>
>    Tested under Linux x86_64, ok to commit ?
>
>    * src/c++11/debug.cc (format_word): Delete.
>    (print_literal): New. Replace call to print_word for literals.

This is a nice change, OK to commit, thanks.