Bug#195149: pasting "foo" and "bar" does not give a valid preprocessing token

["Juergen E. Fischer" <fischer@linux-buechse.de>]

Hi there,

the problem in all above bugs is the wrong use of the ## preprocessor
operator. The general solution seems to be to just get rid of the
offending ##.

It's used to concatenate tokens to form one (AFAIKS only useful for
identifiers).  The error occurs when one tries to concatenate things
that cannot be one token.  gcc-3.3 doesn't like that anymore.

So
	#define m(a)	foo->##a
should read
	#define m(a)	foo->a

(same goes for other tokens; "::", "(", "," etc).

An other case are strings.  Consecutive string tokens
will be concatenated by the compiler so the use of 
## would be also needless here:

So
	#define m(a)	"foo:" ## a
should read
	#define m(a)	"foo:" a



Jürgen

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