https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93490
Bug ID: 93490
Summary: -Wsuggest-attribute=const suggests const attribute for
non-static member function
Product: gcc
Version: 9.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: christian.morales.vega at gmail dot com
Target Milestone: ---
I can't share the code triggering it. But gcc 9.2.1 from Fedora 31 is saying
"function might be candidate for attribute ‘const’" for a member function.
AFAIU since the member function takes the "this" pointer as argument it can't
use the const attribute.
FWIW the method
- It already has the "pure" attribute
- It just returns a reference to a member of the object
- Is in a class derived from another using the CRTP
It does it when building the class tests, with LTO. I have not checked, but
it's possible the tests only ever use one object, so "this" couldn't ever
change... in that specific code. If this is the problem I would argue that's a
dangerous warning to give.
