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Annotation of gcc/README.trad, revision 1.1

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

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