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Re: Multiple __copy_histories_history_ symbols defined

From: Tobias Burnus <burnus at net-b dot de>
To: Andrew Benson <abenson at its dot caltech dot edu>
Cc: fortran at gcc dot gnu dot org
Date: Sat, 13 Nov 2010 20:01:19 +0100
Subject: Re: Multiple __copy_histories_history_ symbols defined
References: <201011131046.21723.abenson@its.caltech.edu>

Hi Andrew,

Andrew Benson wrote:

With a recent gfortran 4.6 (r166706) I'm getting a lot of errors while linking
that look like this:
./source/accretion_disks.switched.F90:225: multiple definition of
`__copy_histories_history_'

I haven't been able to create a test case which recreates this problem yet,
but I'll continue to try to do so. Until then, any ideas why this is
happening?

That's a known issue, cf. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46448

That's an unwanted side effect of fixing ALLOCATE with a polymorphic SOURCE=., which requires a deep copy of the data for the effective type.

Tobias

References:
- Multiple __copy_histories_history_ symbols defined
  - From: Andrew Benson

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