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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/59612] iso_fortran_env segfaults with -fdump-fortran-original
Date: Sun, 29 Dec 2013 18:08:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59612

--- Comment #7 from janus at gcc dot gnu.org ---
(In reply to janus from comment #2)
> Does -fdump-fortran-optimized actually do anything?

The reason why I did not get any output from it is of course that it is only in
effect if -ffrontend-optimize is given in addition. Maybe it would be worth to
mention this in the documentation, e.g. like this:


Index: invoke.texi
===================================================================
--- invoke.texi    (revision 206237)
+++ invoke.texi    (working copy)
@@ -991,8 +991,9 @@

 @item -fdump-fortran-optimized
 @opindex @code{fdump-fortran-optimized}
-Output the parse tree after front-end optimization.  Only really
-useful for debugging the GNU Fortran compiler itself.
+Output the parse tree after front-end optimization (if enabled via
+@option{-ffrontend-optimize}).  Only really useful for debugging the GNU
+Fortran compiler itself.

 @item -fdump-parse-tree
 @opindex @code{fdump-parse-tree}