[Bug fortran/39239] Reject SAVEd variables EQUIVALENCEd to a COMMON

[koenigni at student dot ethz.ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39239

Nicolas Koenig <koenigni at student dot ethz.ch> changed:

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--- Comment #5 from Nicolas Koenig <koenigni at student dot ethz.ch> ---
Created attachment 40954
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40954&action=edit
Proposed patch for EQUIVALENCE / BIND(C)

My first attempt at a patch :)