http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47386
Summary: Wrong warning: ‘w.dim[2].stride’ may be used
uninitialized in this function [-Wuninitialized]
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: [email protected]
ReportedBy: [email protected]
Hi.
the following testcase demonstrates warnings that can be irritating:
% cat gfcbug112.f90
module gfcbug112
implicit none
logical :: ll = .false.
contains
subroutine calc_W (N, M)
integer, intent(in) :: N, M
real :: T(N,M,M) ! Temporary array 1
real, allocatable :: W(:,:,:) ! Temporary array 2
if(ll) then
allocate (W(N,M,M))
end if
T=0
if(ll) then
W = 0
deallocate (W)
end if
end subroutine calc_W
end module gfcbug112
% gfc-trunk -c -Wall -O gfcbug112.f90
gfcbug112.f90: In function ‘calc_w’:
gfcbug112.f90:5:0: warning: ‘w.dim[2].stride’ may be used uninitialized in this
function [-Wuninitialized]
One can get really many of these in large modules...
Harald
