http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57148
kargl at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kargl at gcc dot gnu.org --- Comment #2 from kargl at gcc dot gnu.org 2013-05-02 20:02:58 UTC --- (In reply to comment #1) > You are wrong in saying the range is -2147483648 to +2147483647. In fortran > the range is symmetrical around 0. > > *** This bug has been marked as a duplicate of bug 33285 *** Not quite right. The model numbers imply a symmetric range. It is processor dependent on whether the most negative value is -2147483648. Without see the source, it's difficult to say what OP hit. If her/his code is equivalent to program foo integer i read(*,*) i print *, i end program foo update to 4.8. or trunk. This is trunk. % gfc4x -o foo foo.f90 % ./foo -2147483648 -2147483648 This is 4.7.something_revision. gfc47 -o foo foo.f90 troutmask:sgk[214] ./foo -2147483648 At line 3 of file foo.f90 (unit = 5, file = 'stdin') Fortran runtime error: Integer overflow while reading item 1 If OP tries a simple assignment he/she will hit an issue with a unary minus operator.