https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83254
Bug ID: 83254
Summary: gfortran doesn't consider c_loc addresses c_associated
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: woodard at redhat dot com
Target Milestone: ---
Created attachment 42776
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42776&action=edit
example program
gfortran 7.1 -> current trunk doesn't consider c_loc addresses c_associated the
way that earlier versions of gfortran does.
[ben@localhost cassoc]$ gfortran --version
GNU Fortran (GCC) 6.3.1 20170216 (Red Hat 6.3.1-3)
Copyright (C) 2016 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
[ben@localhost cassoc]$ gfortran cassoc.f90 -o cassoc.6.3.1
[ben@localhost cassoc]$ ./cassoc.6.3.1
true
true
but it seems like something broke in the 7 series of compilers.
[ben@Mustang c_assoc]$ gfortran --version
GNU Fortran (GCC) 7.2.1 20170915 (Red Hat 7.2.1-2)
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
[ben@Mustang c_assoc]$ gfortran cassoc.f90
[ben@Mustang c_assoc]$ ./a.out
true
false
The original report targeted 7.1 and the problem appears to persist all the way
to the current trunk.
