[Bug fortran/40881] warn for obsolescent features

[janus at gcc dot gnu dot org]

------- Comment #5 from janus at gcc dot gnu dot org  2009-08-02 11:13 -------
r150349 adds warnings for:

* alternate return
* computed goto
* statement functions
* old-style character lengths


Before we already had:

* arithmetic if
* assumed-length character functions


Which leaves the following warnings unimplemented:

* shared DO termination
* DATA statements among executable statements
* fixed form source


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40881