[Octave-bug-tracker] [bug #55046] Add static compile-time checking of printf functions using compiler attributes

[Kai Torben Ohlhus]

Update of bug #55046 (project octave):

                  Status:             In Progress => Need Info              

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Follow-up Comment #16:

I started to work on this one, but got stuck with the macro expansion (see
file #45515).

The Problem is in "libinterp/corefcn/error.h".  This version without the macro
works:


__attribute__ ((__format__(__printf__, 1, 2)))
OCTAVE_NORETURN OCTINTERP_API extern
void error (const char *fmt, ...);


While this does not:


OCTAVE_FORMAT_ATTRIBUTE (__printf__, 1, 2)
OCTAVE_NORETURN OCTINTERP_API extern
void error (const char *fmt, ...);


with the error:


libinterp/corefcn/error.h:64:25: error: expected constructor, destructor, or
type conversion before ‘(’ token
 OCTAVE_FORMAT_ATTRIBUTE (__printf__, 1, 2)
                         ^


I tried to use another working macro like "OCTAVE_DEPRECATED" declared in the
very same file, but no luck either... any clue what I am doing wrong?! :(

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