Should -Wmaybe-uninitialized be included in -Wall?

[Andreas Arnez]

When building gdb with newer gcc versions I frequently stumble across
maybe-uninitialized false positives, like the ones documented in bug
57237.  Various bugs address similar issues, and in bug 56526 Jakub
Jelinek wrote:

> Maybe-uninitialized warnings have tons of known false positives, while
> the predicated analysis can handle the simplest cases, it can't handle
> anything more complicated.

Even the description of this option states:

> These warnings are made optional because GCC is not smart enough to
> see all the reasons why the code might be correct in spite of
> appearing to have an error.

With this situation at hand, I wonder whether it's a good idea to keep
maybe-uninitialized included in -Wall.  Projects which have been using
"-Wall -Werror" successfully for many years are now forced to
investigate non-existing bugs in their code.