[Bug middle-end/96987] [11 regression] warning 'ptr' may be used uninitialized const pointer parameter

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96987

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |msebor at gcc dot gnu.org
         Resolution|---                         |INVALID

--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning is by design and based on the assumption that a function declared
to take a const pointer (or in C++, a const reference) as an argument reads the
pointed-to-object.  If that's not the case annotating the function declaration
with attribute as shgwn below suppresses the warning:

  extern __attribute__ ((access (none, 1))) void constparam(const int *ptr);