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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/100121] New: RFE: plugin support for -Wformat via
 __attribute__((format()))
Date: Fri, 16 Apr 2021 16:15:26 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100121

            Bug ID: 100121
           Summary: RFE: plugin support for -Wformat via
                    __attribute__((format()))
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dmalcolm at gcc dot gnu.org
                CC: msebor at gcc dot gnu.org
  Target Milestone: ---

https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-fo=
rmat-function-attribute
documents the various "archetypes" supported by=20
   __attribute__ ((format (ARCHETYPE, M, N)));

These are all just built-in to the compiler.

It would be nice to allow users to add their own, via plugins.

Consider e.g.
=20
https://gcc-python-plugin.readthedocs.io/en/latest/cpychecker.html#format-s=
tring-checking
for which I had to effectively implement my own version of -Wformat, rather
than being able to reuse gcc's implementation.=