$ cat mod-neg.f90
integer :: a,b
a = 2
b = -1
print *,modulo(2,-1)
print *,modulo(a,b)
end
$ gfortran mod-neg.f90 && ./a.out
0
-1
$ gfortran -v
Reading specs from /home/zfkts/lib/gcc/ia64-unknown-linux-gnu/4.0.0/specs
Configured with: ../gcc-4.0-20041212/configure --prefix=/home/zfkts
--enable-languages=c,c++,f95 : (reconfigured) ../gcc-4.0-20041212/configure
--prefix=/home/zfkts --enable-languages=c,c++,f95 --disable-shared
Thread model: posix
gcc version 4.0.0 20041212 (experimental)
It's a bit strange that the first result is correct, and the
second one isn't.
--
Summary: modulo generates wrong result
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libfortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: Thomas dot Koenig at online dot de
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19032
