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[Bug fortran/35681] wrong result for vector subscripted array expression in MVBITS
- From: "fxcoudert at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 28 Mar 2008 15:18:30 -0000
- Subject: [Bug fortran/35681] wrong result for vector subscripted array expression in MVBITS
- References: <bug-35681-15620@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from fxcoudert at gcc dot gnu dot org 2008-03-28 15:18 -------
Reduced testcase:
integer, dimension(10) :: ILA1 = (/1,2,3,4,5,6,7,8,9,10/)
call mvbits ((ILA1((/9,9,6,2,4,9,2,9,6,10/))), 2, 4, ILA1, 3)
write (*,'(10(I3))') ila1
end
output is:
17 18 11 36 77 22 39 16 41 18
while it should be:
17 18 11 4 13 22 7 16 9 18
I don't know if it related, but the following compiles and segfault at runtime:
integer, dimension(10) :: ILA1 = (/1,2,3,4,5,6,7,8,9,10/)
call mvbits ((ILA1((/9/))), 2, 4, ILA1, 3)
write (*,'(10(I3))') ila1
end
while it gives a strange error message with -fbounds-check:
At line 2 of file a.f90
Fortran runtime error: Array reference out of bounds for array 'ila1', upper
bound of dimension 1 exceeded (68 > 10)
--
fxcoudert at gcc dot gnu dot org changed:
What |Removed |Added
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CC| |fxcoudert at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35681