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From: "mikael at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/65532] [5 Regression] Unexpected error with legacy code (D1MACH)
Date: Tue, 24 Mar 2015 11:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65532

--- Comment #4 from Mikael Morin <mikael at gcc dot gnu.org> ---
With r221586, procedure d1mach is resolved more than once.
At the first time resolve_values is called, the problematic variables (diver,
large, etc)  have a NULL sym->value, which is set afterwards in resolve_data.
On the second call, the value is non-null and the error is produced.