Re: Unused parameter warnings

[Paul Eggert]

On 10/10/20 8:00 AM, Marc Nieper-Wißkirchen wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97364

Looking at that bug report and related material (particularly Richard Biener's 
2012 comment <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51971#c1>) the GCC 
folks seem to have decided long ago that const and pure attributes were intended 
more as directives for common subexpression elimination than as independent 
notions in their own right, it's just that they haven't gotten around to (or are 
embarrassed to :-) document that decision. In the meantime, to try to help out 
Gnulib hackers I installed the attached commentary changes. It was cleaner to 
document 'const' first so I rearranged the #defines.

0001-attribute-improve-const-pure-doc.patch
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