------- Comment #3 from jkrahn at nc dot rr dot com 2008-05-13 17:05 ------- This is an important to fix. I just ran into problems from this. Gfortran is supposed to aim for standards conformance, but vendor extensions are not supposed to break valid code. I think this behavior is a Standards violation, and really should be a BUG and not just an enhancement.
This is mainly a problem with intrinsic subroutines, because non-intrinsic functions require an EXTERNAL declaration, and automatically override intrinsic functions. This is also the main reason the INTRINSIC declaration exists. Without it, Gfortran should assume that it is an external subroutine, not an intrinsic. Some F77 compilers make the selection automatic by letting the linker find the user's subroutine first, and then link to one in a Fortran extension library if not found. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28378
