------- Comment #4 from burnus at gcc dot gnu dot org 2010-03-12 12:31 -------
Actually, in list_read.c's parse_real gfortran already handles inf(inity) and
nan (_but_ _not _"nan(string)"). Thus, using 'read(*,*) a' works.
* * *
The TODO quote from comment 2 is for read.c's "convert_real"; however, as this
only calls strto(d,f,ld), I do not see a problem on POSIX/C99 systems. I think
the actual problem is read.c's "read_f" which cannot parse NaN/INF and gives a
"goto bad" error. I think one should do something similar to list_read.c's
parse_real.
For completeness, the strtod, strtof, strtold of C99/POSIX supports:
* One of INF or INFINITY, ignoring case
* One of NAN or NAN(n-char-sequence_opt), ignoring case in the NAN part, where:
n-char-sequence:
digit
nondigit
n-char-sequence digit
n-char-sequence nondigit
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43298
