Alejandro Colomar 0b8c0c893c lib/, src/: Use NULL instead of 0 as a null pointer constant ...

GCC 15 will add -Wzero-as-null-pointer-constant for deprecating it,
and I'm working on a paper for deprecating it from ISO C too.
Let's remove any uses in our code base.

I've done this change by building GCC from master, adding
-Werror=zero-as-null-pointer-constant to ./autogen.sh, and fixing every
error that showed up.

Closes: <https://github.com/shadow-maint/shadow/issues/1120>
Link: <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117059>
Link: <https://software.codidact.com/posts/292718/292759#answer-292759>
Signed-off-by: Alejandro Colomar <alx@kernel.org>

2024-11-13 09:44:54 -06:00

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