------- Comment #1 from burnus at gcc dot gnu dot org 2007-06-23 07:34 -------
R527 data-implied-do
is ( data-i-do-object-list , data-i-do-variable = scalar-int-expr,
scalar-int-expr [ , scalar-int-expr ] )
R528 data-i-do-object is array-element
or scalar-structure-component
or data-implied-do
which does not include substrings.
Related:
character(len=20) :: a = 'xyz'
data a(1:3)/'abc'/
-> Overlapping storage initializations (otherwise valid)
Should be detected with -std=f95.
character(len=3) :: b
integer :: i
data (b(i:i),i=1,3)/3*'x'/
data (b(i:i),i=2,2)/'y'/
print *, b
-> Overlapping storage initializations (substrings are also not standard
conform)
-> Should this be detected or ignored?
(This is not detected by ifort either; both ifort and gfortran print 'xxx'; if
one reverses the data order, both print 'xyx'.)
Observation (should be ok either way):
character(len=20) :: a
data a(1:3)/'abc'/
print '(":",a,":")', a
gfortran prints:
:abc :
g95, NAG f95, ifort print:
:abc:
(for "a = 'abc'" they have the same as gfortran. -> preinitialized by \0 vs. by
' '?)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30792
