preprocessing directive with no new-line character

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According to the C standard (either C99 or C11), a preprocessing
directive ends with a new-line character: "The last token in the
sequence is the first new-line character that follows the first
token in the sequence."

But GCC accepts the following program with -std=c99 -pedantic:

int main (void)
{
  return 0;
}
#define FOO

where there is no new-line character after "FOO".

Is there any reason?

-- 
Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)



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