[Bug fortran/70937] [7 Regression] ICE: tree code ‘ssa_name’ is not supported in LTO streams

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70937

--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
With the second patch in comment 9 applied on top of my working tree (heavily
patched), I get

[Book15] f90/bug% gfc
/opt/gcc/_clean/gcc/testsuite/gfortran.dg/allocatable_function_4.f90
-fdump-tree-original
/opt/gcc/_clean/gcc/testsuite/gfortran.dg/allocatable_function_4.f90:52:0:

 end function unique_A

internal compiler error: tree check: expected tree that contains 'decl common'
structure, have 'identifier_node' in print_declaration, at
tree-pretty-print.c:3287