[Bug c++/79572] [6/7 Regression] Segfault with -O1 and higher on null reference

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79572

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |trippels at gcc dot gnu.org

--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
You can use -fno-delete-null-pointer-checks as a workaround for this issue. 
But the C++ standard makes it very clear that references cannot be null,
otherwise you're invoking undefined behavior.