[Bug fortran/55069] TRIM incorrectly optimized out for assignment to allocatable strings (deferred length)

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55069

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |burnus at gcc dot gnu.org,
                   |                            |tkoenig at gcc dot gnu.org
            Summary|[4.7/4.8 Regression] TRIM   |TRIM incorrectly optimized
                   |incorrectly optimized out   |out for assignment to
                   |for assignment to           |allocatable strings
                   |allocatable string          |(deferred length)

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-10-25 11:07:42 UTC ---
Seems to be fixed for GCC 4.8 (since 2012-06-16) but it is present in 4.7/4.6.
See bug reports fortran/53642 and PR fortran/45170.

One could consider backporting the bug fix to 4.7 (and 4.6), even though the
bug is no regression (i.e. it never worked). On the other hand, 4.8 fixed
several additional issues with allocatable string lengths, hence, you could
consider to update to 4.8. (Which is the current developer version, but usually
rather stable. See http://gcc.gnu.org/wiki/GFortranBinaries)

(I removed the "4.7/4.8 regression" from the summary, given that is no
regression and that it works with 4.8 since June.)