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[flang][runtime] Accommodate change of type in assignment to allocatable #141988

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merged 1 commit into from
Jun 4, 2025

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When an assignment to a derived type allocatable requires (re)allocation, its type may change to that of the right-hand side. The code didn't update its derived type pointer, leading to the wrong type being put into the descriptors created for elemental defined assignment subroutine calls.

Fixes #141835.

@klausler klausler changed the title [flang][runtime] Accomodate change of type in assignment to allocatable [flang][runtime] Accommodate change of type in assignment to allocatable May 29, 2025
When an assignment to a derived type allocatable requires (re)allocation,
its type may change to that of the right-hand side.  The code didn't
update its derived type pointer, leading to the wrong type being
put into the descriptors created for elemental defined assignment
subroutine calls.

Fixes llvm#141835.
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@DanielCChen DanielCChen left a comment

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LGTM.
It fixed the test cases.
Thanks.

@klausler klausler merged commit 7b9518a into llvm:main Jun 4, 2025
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@klausler klausler deleted the bug141835 branch June 4, 2025 16:22
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[flang] Incorrect implementation sequence when the defined assignment is elemental for allocatable component.
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