[Bug fortran/97818] PDT Parameterized Derived Type fails with SIGABRT at -O1

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97818

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from GCC8 up to trunk (for -O1 only). The code doesN't compile with
GCC7.