https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758211#M13698 Hi,<BR />I have done a search for IOMSG in the Intel Fortram manual 11.1 but there does not appear to be much information available other than stating it is a Fortran 2003 feature included in this release.<BR /><BR />There is no mention of theIOMSG specifier in the File Operation I/O Statements section.<BR />Is this something that will be addressed in later versions of the manual?<BR /><BR />How does one determine the correct size of the character array passed as the IOMSG parameter?<BR /><BR />CHARACTER(<WHAT should="" this="" be="">) :: msg<BR />OPEN(......., IOMSG=msg)<BR /><BR />Isthe minimum length defined in the Fortran 2003 Standard or is it Compiler dependent?<BR />Is there a way to query, at runtime,what the minimum length is?<BR /><BR />regards<BR />Mike<BR /></WHAT> Fri, 21 Aug 2009 04:06:14 GMT Mike_Rezny 2009-08-21T04:06:14Z https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758211#M13698 Hi,<BR />I have done a search for IOMSG in the Intel Fortram manual 11.1 but there does not appear to be much information available other than stating it is a Fortran 2003 feature included in this release.<BR /><BR />There is no mention of theIOMSG specifier in the File Operation I/O Statements section.<BR />Is this something that will be addressed in later versions of the manual?<BR /><BR />How does one determine the correct size of the character array passed as the IOMSG parameter?<BR /><BR />CHARACTER(<WHAT should="" this="" be="">) :: msg<BR />OPEN(......., IOMSG=msg)<BR /><BR />Isthe minimum length defined in the Fortran 2003 Standard or is it Compiler dependent?<BR />Is there a way to query, at runtime,what the minimum length is?<BR /><BR />regards<BR />Mike<BR /></WHAT> Fri, 21 Aug 2009 04:06:14 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758211#M13698 Mike_Rezny 2009-08-21T04:06:14Z https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758212#M13699 <DIV style="margin:0px;"></DIV> The Fortran standard is silent on the matter of the length, and there is no way to query a "minimum length". In our implementation, a length of 100 should suffice. Yes, we plan on documenting the F2003 features in a future version.<BR /> Fri, 21 Aug 2009 12:37:37 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758212#M13699 Steven_L_Intel1 2009-08-21T12:37:37Z https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758213#M13700 <DIV style="margin:0px;"></DIV> <BR />If the IOMSG is a system message text string then the O/S may have a maximum message string size. As to what to use, this may depend on the O/S. 100 might be too small _MAX_PATH (260) might be safer. One buffer of _MAX_ENV (32767) might be safest.<BR /><BR />These are Windoz values, alter for Linux/Mac equivilents.<BR /><BR />Jim<BR /> Fri, 21 Aug 2009 15:08:30 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758213#M13700 jimdempseyatthecove 2009-08-21T15:08:30Z https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758214#M13701 <DIV style="margin:0px;"></DIV> I believe that it is a string from the Intel Fortran message catalog and won't include system error text.<BR /> Fri, 21 Aug 2009 15:13:33 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758214#M13701 Steven_L_Intel1 2009-08-21T15:13:33Z https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758215#M13702 <DIV style="margin:0px;"> <DIV id="quote_reply" style="margin-top: 5px; width: 100%;"> <DIV style="margin-left:2px;margin-right:2px;">Quoting - <A href="https://community.intel.com/en-us/profile/99850">jimdempseyatthecove</A></DIV> <DIV style="background-color:#E5E5E5; padding:5px;border: 1px; border-style: inset;margin-left:2px;margin-right:2px;"><EM><BR />If the IOMSG is a system message text string then the O/S may have a maximum message string size. As to what to use, this may depend on the O/S. 100 might be too small _MAX_PATH (260) might be safer. One buffer of _MAX_ENV (32767) might be safest.<BR /><BR />These are Windoz values, alter for Linux/Mac equivilents.<BR /><BR />Jim<BR /></EM></DIV> </DIV> </DIV> Hi Jim,<BR />Thanks for this information.<BR />I did a search of the Fortran manual and could find no reference to these two values.<BR /><BR />I tried printing out _MAX_PATH, _MAX_ENV, MAX_PATH, MAX_ENV in a small Fortran program (11.0.074)<BR />but the compiler claims they are undeclared. Do I need to use a module or something else to get these values?<BR /><BR />I am using a Linux system. Does this make a difference?<BR /><BR />regards<BR />Mike Sat, 22 Aug 2009 08:59:06 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758215#M13702 Mike_Rezny 2009-08-22T08:59:06Z https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758216#M13703 <DIV style="margin:0px;"></DIV> Those are all Windows constants defined in Windows-only modules. There are no equivalent constants defined for Fortran on Linux. Just pick a number.<BR /> Sun, 23 Aug 2009 01:09:04 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/length-of-array-for-IOMSG-clause/m-p/758216#M13703 Steven_L_Intel1 2009-08-23T01:09:04Z