Hi Alejandro, > We're planning a path for deprecation of 0 as a null pointer constant, > in favor of NULL
+1 For reference, we discussed the use of nullptr in Gnulib [1][2] in the past. > As a first step, Joseph proposed adding it into gnulib's manywarnings. > Does it sound good to you? Yes. Usually we augment the manywarnings module right after a new GCC release, but there is no problem adding a new warning that still only exists in GCC snapshots. Let me - build a GCC snapshot locally, - see how this new warning behaves on the Gnulib source code and some other packages (inetutils comes to mind), - then tell you about the results. Bruno [1] https://lists.gnu.org/archive/html/bug-gnulib/2023-02/msg00029.html [2] https://lists.gnu.org/archive/html/bug-gnulib/2023-02/msg00031.html