[Bug fortran/94769] Possible use of uninitialized variable num

[stefansf at linux dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94769

--- Comment #8 from Stefan Schulze Frielinghaus <stefansf at linux dot ibm.com> 
---
Patch posted:

https://gcc.gnu.org/pipermail/gcc-patches/2020-April/544716.html