[Bug fortran/35627] [4.3, 4.4 regression] namelist read error

["burnus at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #6 from burnus at gcc dot gnu dot org  2008-03-19 15:54 -------
(In reply to comment #5)
> I believe the problem is actual;y in read_logical and occurs on a short read. 
> By short, I mean the case where we provide fewer data items in the namelist
> file then there are in the logical array.  I am curious what has triggered
> this.

I think it has something to do with read_real, though different from what I
thought. In any case, we end up in read_real, trying to match "NaN" and go to
unwind. However, afterwards it shows an error for "xlbtna" (for which read_real
is called) and not for the item that comes next and is not NaN, namely
"nbshapa".

Just before the return, line_buffer contains in "unwind:" of read_real:
  line_buffer[0] == '\0'
  line_buffer[1] == 'n'
  line_buffer[2] == 'b'

The problem is that the first element is '\0' and thus the rewinding does not
happen. If one changes "nbshapa" into "nnnbshapa" it works. Thus the question
is : Where does the "\0" come from?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35627