I'm attaching a very simple reproducer which, if compiled like following way:
ifort -c lsame.f
gfortran repr.f lsame.o
produces a wrong negation of a logical value returned by function LSAME(a
simpified analogue for LAPACK one available in attach). The value for
.NOT.LSAME('D','D') and LSAME('D','D') are both true. So it looks like
something wrong on GFORTRAN side.
If I use gfortran 4.2.0 or compile lsame with any gfortran, the logical results
are correct.
Change of Intel compiler version ( 9.1, 10.1 were tested ) doesn't affect
result.
This reproducable for ia32 and Intel64 architectures.
--
Summary: Inversion of logical function compiled with ifort not
correct.
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: alexander dot v dot kobotov at intel dot com
GCC host triplet: Linux 2.6.16.46-0.12-smp
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40539
