https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119800
kargls at comcast dot net changed:
What |Removed |Added
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CC| |kargls at comcast dot net
--- Comment #1 from kargls at comcast dot net ---
(In reply to Keith Refson from comment #0)
>
> I suggest at least issuing a warning to expect undefined run-time behaviour!
>
Here's a patch hidden behind -Wsurprising.
% gfcx -o z -Wsurprising a.f90
a.f90:10:19:
10 | b = transfer(a, b)
| 1
Warning: SOURCE at (1) contains an ALLOCATABLE or POINTER component, which may
lead to undefined behavior because TRANSFER does not do a deep copy
[-Wsurprising]
It's a partial patch in that it only handles SOURCE with a derived type.
The patch likely needs to be expanded to handle a polymorphic entity.
I know very little about CLASS.
