Re: %D

["Kaveh R. Ghazi" <ghazi at caip dot rutgers dot edu>]

 > config/i386/winnt.c
 > config/i386/winnt.c: In function `ix86_handle_dll_attribute':
 > config/i386/winnt.c:110: warning: unknown conversion type character `D' in format
 > config/i386/winnt.c:110: warning: too many arguments for format

The %D specifier (which takes a tree argument) is only valid in the C
and C++ frontends.  Since winnt.c is a backend file (and is used by
all languages) we shouldn't use %D there and gcc is warning you about
this.


If it is actually the case that the routines containing these %D uses
are somehow only called by the C and/or C++ frontends, then you
probably need to isolate the routines into a file that is only linked
with cc1 and/or cc1plus. To do that you need to:

1.  Move the problematic code into a file called winnt-c.c.

2.  In addition to whatever other includes you need based on the code
    demands, also include c-tree.h or cp/cp-tree.h (before toplev.h),
    this allows the format specifiers from that frontend to be used
    without warnings.  Alternatively you can define GCC_DIAG_STYLE to
    __gcc_cdiag__ or __gcc_cxxdiag__ (before toplev.h).

3.  Set the `c_target_objs' and/or `cxx_target_objs' variables equal
    to winnt-c.o in config.gcc for all targets using winnt.o so that
    winnt-c.o gets linked with just those frontends.

That should be it.

		--Kaveh

PS: a "quick hack" to test if this will fix things would be to instead
define GCC_DIAG_STYLE appropriately at the top of winnt.c (before
including toplev.h) and see if it clears up the problem.

--
Kaveh R. Ghazi			ghazi@caip.rutgers.edu