[open-cobol-list] use of __attribute__ with printf

[David Korn]

You should change
     __attribute__ ((format (printf, 1, 2)));
to
     __attribute__ ((format (__printf__, 1, 2)));

everywhere since user programs can have #defines for printf.
In particular since we build open-cobol with sfio instead of the GNU stdio,
printf gets mapped to _ast_printf which produces warning messages.


Better yet would be to use

     __attribute__ ((__format__ (__printf__, 1, 2)));
to prevent extensions that use #define format to work.

David Korn
address@hidden