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[Bug fortran/19654] compilation crashes when variable is too large instead of showing error
- From: "coudert at clipper dot ens dot fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 28 Jan 2005 10:37:44 -0000
- Subject: [Bug fortran/19654] compilation crashes when variable is too large instead of showing error
- References: <20050127121026.19654.guillemborrell@yahoo.es>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From coudert at clipper dot ens dot fr 2005-01-28 10:37 -------
It seems that, above a given size, gfortran declares the array as non-static:
$ cat a.f90
program kk
implicit none
integer, parameter :: N=32768**2
real, dimension(N) :: input
call random_number(input)
end program kk
$ diff a.f90 b.f90
3c3
< integer, parameter :: N=32768**2
---
> integer, parameter :: N=32765**2
$ diff a.f90.t02.original b.f90.t02.original
3c3
< real4 input[1073741824];
---
> static real4 input[1073545225];
10c10
< parm.0.dim[0].ubound = 1073741824;
---
> parm.0.dim[0].ubound = 1073545225;
$ gfortran -fdump-tree-original a.f90
a.f90: In function ?MAIN__?:
a.f90:5: internal compiler error: in tree_low_cst, at tree.c:3816
$ gfortran -fdump-tree-original b.f90
b.f90: In function ?MAIN__?:
b.f90:4: error: size of variable ?input? is too large
Maybe this information will be useful to our gfortran gurus.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19654