Such an example can't be compiled:
#include <stdio.h>
void x()
{
printf(__FUNCTION__ "\n");
}
$ gcc printf.c -o fprintf
printf.c: In function `x':
printf.c:5: error: syntax error before string constant
Then, the problem is not printf-specific and is not depend of
<stdio.h>. The next example gives the same error:
void y(const char *f, ...);
void z()
{
y(__FUNCTION__ "\n");
}
If some args are present in the ellipsis section (i.e. y(__FUNCTION__
": %s\n", "xxx")), the problem doesn't vanish. And, if __FILE__ is
used instead of __FUNCTION__, the problem is absent.
