QIO operation fails for files with extended characters in the name

[madhav_poddar]

I have written a code that accesses / modifies various file attributes using QIO operation. It works perfectly fine for all the files except those containg extended characters in their name (such as This^.File^.Name^.Has^.A^.Lot^.Of^.Periods.DAT;1 or SAMPLE^!-FILE.TXT;1). For such file, following error is generated :
sys$qiow (iosb) failed - error status 2072 (%SYSTEM-W-BADFILENAME, bad file name syntax).

Please advise.

Thanks,

Madhav

[Steven Schweda · Accepted solution]

> I have written a code that accesses / modifies various file attributes
> using QIO operation. [...]

   I'm not good at debugging invisible code, and I only have
a moment now, but...

      naml$l_filesys_name
      naml$l_filesys_name_alloc

   If you're not using them, then perhaps you should be.  For an
example, see a (recent) UnZip [.vms]vms.c.

[madhav_poddar]

Thanks Steven.

I was able to solve the issue after referring to the file vms.c