[Bug fortran/32319] New: Bad automatic array argument

["terry at chem dot gu dot se" <gcc-bugzilla at gcc dot gnu dot org>]

[tjf@fkpc167]$ cat run.f90 
subroutine aa(v)
integer,dimension(:),intent(out)::v
write(*,*)size(v)
v=0
end subroutine aa

program ff
implicit none
integer,dimension(10)::w
w=1
write(*,*)w
call aa(w(1:5))
write(*,*)w
end

[tjf@fkpc167]$ gfortran -Wall -W -fbounds-check -O --std=f95 --pedantic -v
run.f90
Driving: gfortran -Wall -W -fbounds-check -O -std=f95 -pedantic -v run.f90
-lgfortranbegin -lgfortran -lm -shared-libgcc
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ./configure --disable-multilib --enable-languages=fortran
Thread model: posix
gcc version 4.2.0 20070501 (prerelease)
 /usr/local/libexec/gcc/x86_64-unknown-linux-gnu/4.2.0/f951 run.f90 -quiet
-dumpbase run.f90 -mtune=generic -auxbase run -O -Wall -W -pedantic -std=f95
-version -fbounds-check -I
/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.2.0/finclude -o /tmp/cc6lORdO.s
GNU F95 version 4.2.0 20070501 (prerelease) (x86_64-unknown-linux-gnu)
        compiled by GNU C version 4.2.0 20070501 (prerelease).
GGC heuristics: --param ggc-min-expand=89 --param ggc-min-heapsize=112193
 as --traditional-format -V -Qy -o /tmp/ccyEdACx.o /tmp/cc6lORdO.s
GNU assembler version 2.17.50 (x86_64-linux-gnu) using BFD version 2.17.50
20070103 Ubuntu
 /usr/local/libexec/gcc/x86_64-unknown-linux-gnu/4.2.0/collect2 --eh-frame-hdr
-m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2
/usr/lib/../lib64/crt1.o /usr/lib/../lib64/crti.o
/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.2.0/crtbegin.o
-L/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.2.0
-L/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.2.0/../../../../lib64
-L/lib/../lib64 -L/usr/lib/../lib64
-L/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.2.0/../../.. /tmp/ccyEdACx.o
-lgfortranbegin -lgfortran -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.2.0/crtend.o
/usr/lib/../lib64/crtn.o
[tjf@fkpc167]$ ./a.out 
           1           1           1           1           1           1       
   1           1           1           1
 -1762200976
Segmentation fault

This has really surprised me, as I'd swear I've used this construct recently. 
So much so, I even went and upgraded my gcc just to test it!

(In case anyone cares, I was in the process of testing some of the implications
of not having PR32317 implemented with array sections and vector subscripts and
the like.  Clearly, I never got that far!)


-- 
           Summary: Bad automatic array argument
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: terry at chem dot gu dot se
  GCC host triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32319