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<HTML>
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<TITLE>New Features</TITLE>
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<A HREF="toc.html">Table of Contents</A><P>
<P>Previous: <A HREF="sect9.html">Limitations and Extensions</A><HR><P>
<H2><A NAME="sect10" HREF="toc.html#toc10">New Features </A></H2>
Here are the changes from Version 2.10 to Version 2.11:
<OL>
.<LI>New
checks for aliasing of subprogram arguments to other arguments and to
COMMON variables. These warnings are controlled by new options <B><A HREF="usage.html">-usage</A>=arg-alias
</B>, <B><A HREF="usage.html">-usage</A>=arg-array-alias </B>, <B><A HREF="usage.html">-usage</A>=arg-common-alias </B>, and <B><A HREF="usage.html">-usage</A>=arg-common-array-alias
</B>. Note: These new checks necessitated a change in project-file format,
so project files created with earlier versions of <B>ftnchek </B> are incompatible
and will need to be re-created. </LI>.<LI>Added a new setting: <B><A HREF="errors.html">-errors</A>= </B><I>num </I> that
sets the limit on the number of error messages in a ``cascade,'' formerly
fixed at 3. </LI>.<LI>Changed the following options from numeric to option-list form:
<B><A HREF="arguments.html">-arguments</A> </B>, <B><A HREF="array.html">-array</A> </B>, <B><A HREF="calltree.html">-calltree</A> </B>, <B><A HREF="common.html">-common</A> </B>, <B><A HREF="makedcls.html">-makedcls</A> </B>, and <B><A HREF="source.html">-source</A> </B>. The earlier
numeric form is still accepted, but the newer forms give more detailed
control over warnings. </LI>.<LI>Fixed bug: an INCLUDE file specified using a relative
path is now searched for relative to the directory of the source file
(before searching in the directories given by <B><A HREF="include.html">-include</A> </B>). Previously it
was searched for relative to the working directory of the <B>ftnchek </B> process.
(The new code is fully correct only for Unix; for VMS and MS-DOS/Windows
the code may have some loopholes that I am unaware of, while for MacOS
and other OSes, it is not attempted. I would appreciate assistance from
anyone who has experience writing such code for these other OSes.) </LI>.<LI>The
Fortran 90 DO ... ENDDO construct, as well as the CYCLE and EXIT statements,
are now fully supported, including construct names. Construct names are
also accepted on IF , THEN , ELSE , and ENDIF statements. Warnings about
the use of construct names is controlled by a new flag <B><A HREF="f77.html">-f77</A>=construct-name
</B>. </LI>.<LI>Added recognition of the Fortran 90 relational operators < <= == /= > >=
. Warnings about use of these is controlled by a new flag <B><A HREF="f77.html">-f77</A>=relops
</B>. </LI>.<LI>Added checking for embedded space in multi-character operators such as
// . This warning is controlled by the existing flag <B><A HREF="pretty.html">-pretty</A>=embedded-space
</B>. </LI>.<LI>Changed the treatment of DEC-Fortran style PARAMETER statements (which
lack parentheses) so that the parameter's data type is that of the value
assigned, rather than being given by the first letter of the parameter
name. (Thanks to Richard Maine for his illuminating discussion of this
issue on comp.lang.fortran, 11 July 1999.) The treatment can be made to
follow the same rule as standard parameters by the flag <B><A HREF="source.html">-source</A>=dec-parameter-standard-type
</B>. </LI>.<LI>Fixed bug in handling of #line directives that caused erroneous line
numbers and file names to appear in error messages. </LI>.<LI>Fixed bug that could
cause erroneous warnings saying ``Subprogram %MAIN multiply defined''. </LI>.<LI>Fixed
the listing of common block references generated by <B><A HREF="crossref.html">-crossref</A> </B>, so that
the blocks are listed in alphabetical order. Previously the modules referencing
each block were sorted, but the blocks themselves were printed in the
order of occurrence in the source file. </LI>.<LI>Added recognition of Fortran-90
I/O keywords and one IBM/MVS I/O keyword, as described above in the documentation
of the <B><A HREF="f77.html">-f77</A> </B> flag. Definitions of these keywords, ready for iokeywds.h, were
kindly provided by Jean-Pierre Rouits. New warning options for these are
<B><A HREF="f77.html">-f77</A>=io-keywords </B> and <B><A HREF="f90.html">-f90</A>=io-keywords </B> to warn about non-F77 and non-F90 I/O
keywords respectively. </LI>.<LI>Changed the Makefile target for installing man pages
under SGI IRIX, so that hopefully it will do the right thing on current
as well as older versions of that system. Users of IRIX are invited to
send corrections if it is still not right. </LI>.<LI>Unbundled shell_mung.c from the
distribution, due to a license conflict. This file is only needed for the
VMS version, and is available separately. </LI>.<LI>Fixed minor bug in creation of
project files that could cause slight variations in results depending
on whether the project file was created in an <B>ftnchek </B> run that processed
multiple source files as opposed to being created in individual runs. </LI>
</OL>
<P><HR><P>Next: <A HREF="sect11.html">Bugs </A>
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