[Patch, fortran] PR96495 - [gfortran] Composition of user-defined operators does not copy ALLOCATABLE property of derived type

Andre Vehreschild vehre@gmx.de
Mon Aug 31 10:27:20 GMT 2020

Hi Paul,

your patch looks fine to me. Ok for trunk.

Thanks for the patch.


On Sat, 29 Aug 2020 12:50:20 +0100
Paul Richard Thomas via Fortran <fortran@gcc.gnu.org> wrote:

> This patch detects a scalar function result that has allocatable components
> and is being used inside a scalarization loop. Before this patch, the
> components would be deallocated and nullified within the scalarization loop
> and so would cause a segfault on the second cycle of the loop.
> The stored result has to be found by identifying the expression in the loop
> ss chain. This is then used for the deallocation of the allocatable
> components in the loop post block, which keeps gimple happy and prevents
> the segfault.
> Regtests on FC31/x86_64 - OK for master?
> Paul
> This patch fixes PR96495 - frees result components outside loop.
> 2020-29-08  Paul Thomas  <pault@gcc.gnu.org>
> gcc/fortran
> PR fortran/96495
> * trans-expr.c (gfc_conv_procedure_call): Take the deallocation
> of allocatable result components of a scalar result outside the
> scalarization loop. Find and use the stored result.
> gcc/testsuite/
> PR fortran/96495
> * gfortran.dg/alloc_comp_result_2.f90 : New test.

Andre Vehreschild * Email: vehre ad gmx dot de

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