[Bug c++/83990] [7/8 Regression] Spurious "potential null pointer dereference" warning regression from 7.1 onwards

[TonyELewis at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83990

--- Comment #3 from Tony E Lewis <TonyELewis at hotmail dot com> ---
Just to be clear...

I don't think it's _necessarily_ a problem that the warning is being triggered
in this particular context (because I'm not in a position to judge that). The
core problem I wish to highlight is that, despite being triggered within a
system header, the warning isn't being silenced as I would expect. And my
suspicion is that this is caused by the source location info having been lost
so the location cannot be recognised as within a system header (as has been
hypothesised for bug 83591).

(I also wish to highlight that the lack of source location info makes the
warning very much harder to respond to.)