I think it would be really useful to add support for C99's VLA
(variable-length arrays) and Fortran 90's arrays (i.e. arrays which use
an array descriptor/dope vector).
While it does not seem as if the upstream version at sourceware.org will
soon get it, Red Hat/Fedora has produced a patch which mostly supports
them. As the branch is unlikely to get merged soon,* Debian should
consider applying the patch manually - or using the Red Hat/Fedora
version of gdb instead. (That's what some other distributions do.)
The VLA patch is available from the archer-jankratochvil-vla branch and
also part of the archer-jankratochvil-fedora17 branch. See
http://sourceware.org/gdb/wiki/ArcherBranchManagement
The GIT can be browsed at http://sourceware.org/git/?p=archer.git;a=summary
*Regarding the VLA merge into upstream, see
http://sourceware.org/ml/gdb/2011-03/msg00021.html
And Fedora's version is developed at
http://pkgs.fedoraproject.org/gitweb/?p=gdb.git;a=summary
With the patch, the result looks as follows:
(gdb) pt A
type = integer(kind=4) (2,-1:0)
(gdb) p A
$1 = (( 1, 2) ( 3, 4) )
(gdb) p A(2,-1)
$3 = 2
(gdb) p A(2,:)
$4 = (2, 4)
(gdb) p A(2:2,:)
$5 = (( 2) ( 4) )
for the following program:
integer, allocatable :: A(:,:)
allocate(A(1:2,-1:0))
A = reshape([1,2,3,4], [2,2])
print *, A
end
Tobias
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