Re: Compiling gcc - unknown conversion type

[Andrew Haley <aph at redhat dot com>]

NightStrike writes:
 > On 12/3/07, Andrew Haley <aph@redhat.com> wrote:
 > > NightStrike writes:
 > >  > When I compile gcc to target x86_64-pc-mingw32 using either
 > >  > x86_64-pc-linux (FC8) or i686-pc-linux (Gentoo) as the build/host
 > >  > systems, I see a large number of warnings that are all similar to:
 > >  >
 > >  > ../../gcc/gcc/builtins.c: In function 'expand_builtin':
 > >  > ../../gcc/gcc/builtins.c:6292: warning: unknown conversion type
 > >  > character 'K' in format
 > >  > ../../gcc/gcc/builtins.c:6292: warning: too many arguments for format
 > >  > ../../gcc/gcc/builtins.c:6298: warning: unknown conversion type
 > >  > character 'K' in format
 > >  > ../../gcc/gcc/builtins.c:6298: warning: too many arguments for format
 > >  >
 > >  >
 > >  > Any idea on the cause of these?
 > >
 > > It means that someone is using "%K" in a printf string, but gcc
 > > doesn't know what "%K" means in a printf string.  I don't think it
 > > matters.
 > 
 > Why doesn't it matter?  Doesn't that mean that the printf statement
 > won't work as intended?

No, not at all.  gcc checks printf strings for consistency; gcc is
just saying it doesn't understand "%K", so it can't check it.  But gcc
can't know what happens at runtime.

Andrew.

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