[Patch, fortran] PR24789 - ICE when assigning to array of strings

[Paul Thomas]

:ADDPATCH fortran:

Just after committing the patch for PR15809 to trunk, I was cleaning up 
the Bugzilla entries and came across PR24789.  It was immediately 
obvious that I had put the patch in the wrong place!  A previous, 
developmental version of the patch added the size in gfc_conv_variable, 
where it fixed the above bug as well as PR15809.  I forgot to check that 
the new location did likewise.   It is fixed by moving the part of the 
patch in trans-decl.c a few lines down, so that it picks up all 
character, pointer arrays and checks that the TYPE_SIZE_UNIT is set.

I will commit this and the testcase to trunk tomorrow morning, under 
the"blindingly obvious" rule, unless there are any objections.

Bootstrapped and regtested under FC3.  It is OK for trunk and I will add 
a further 24 hours for the composite patch to 4.0 and 4.1.

Paul
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