Fortran 'allocatable': 'gfc_allocate_using_malloc' vs. plain 'BUILT_IN_MALLOC'

[Thomas Schwinge]

Hi!

Thanks for educating me in PR90741 "Unreachable second '__builtin_malloc'
for scalar 'allocatable'" -- I didn't know about the default
'-frealloc-lhs' behavior.


One additional question:

The 'allocate' statement uses 'gfc_allocate_using_malloc' (via
'gfc_allocate_allocatable'), but '-frealloc-lhs' uses plain
'BUILT_IN_MALLOC'.  The former does an "Allocation would exceed memory
limit" ('NULL' return) check, the latter doesn't.  (Likewise the latter
for other 'BUILT_IN_MALLOC' uses in 'gcc/fortran/'.)  Is this difference
intentional?


Grüße
 Thomas
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