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Annotation of GNUtools/cc/README.TRAD, revision 1.1

1.1     ! root        1: This is a partial list of how `gcc -traditional' disagrees with
        !             2: traditional C compilers (perhaps only some of them).  Most of these
        !             3: differences are not bugs.
        !             4: 
        !             5: ---------------------------------------------------------------------------
        !             6: K&R-1 (2.4.3) says:
        !             7: 
        !             8:        "If the character following a backslash is not one of those
        !             9:        specified {in the table above}, the backslash is ignored."
        !            10: 
        !            11: Up until recently, `gcc -traditional' complained about \x \a and \v
        !            12: appearing in a character or string literal.  I believe however that
        !            13: this non-feature has been eliminated (recently).
        !            14: 
        !            15: ---------------------------------------------------------------------------
        !            16: When in -traditional mode, gcc allows the following erroneous pair of
        !            17: declarations to appear together in a given scope:
        !            18: 
        !            19:        typedef int foo;
        !            20:        typedef foo foo;
        !            21: 
        !            22: ---------------------------------------------------------------------------
        !            23: K&R-1 (8.5) says:
        !            24: 
        !            25:        "No field may be wider than a word."
        !            26: 
        !            27: Gcc however allows:
        !            28: 
        !            29:        struct S { int i:33; };
        !            30: 
        !            31: ---------------------------------------------------------------------------
        !            32: In K&R-1 there is no restriction against comments crossing include file
        !            33: boundaries.  Gcc however doesn't allow this, even when in -traditional mode.
        !            34: 
        !            35: ---------------------------------------------------------------------------
        !            36: Regarding the length of identifiers, K&R-1 (2.2) says:
        !            37: 
        !            38:        "No more than the first eight characters are significant,
        !            39:        although more may be used."
        !            40: 
        !            41: Gcc treats all characters of identifiers as significant, even when in
        !            42: -traditional mode.
        !            43: 
        !            44: ---------------------------------------------------------------------------
        !            45: K&R-1 (2.2) says:
        !            46: 
        !            47:        "An identifier is a sequence of letters and digits; the first
        !            48:        character must be a letter.  The underscore _ counts as a letter."
        !            49: 
        !            50: Gcc also allows dollar signs in identifiers.  (This may also be an issue
        !            51: for the -pedantic option.)
        !            52: 
        !            53: ---------------------------------------------------------------------------
        !            54: 
        !            55: 

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