[gentoo-hardened] Re: -fstack-protector-all used for kernel build

[Peter Simons]

Peter S Mazinger writes:

 > int __guard  = '\0\0\n\777';

 > warning: octal escape sequence out of range
 > warning: multi-character character constant

By changing the value to '\0\0\n\0777' you can get rid of
the warning. Quoting from the C99 standard:

       6.4.4.1  Integer constants

       [...]

       [#3]  A  decimal  constant  begins  with a nonzero digit and
       consists of a sequence of decimal digits.  An octal constant
       consists  of  the prefix 0 optionally followed by a sequence
       of the digits 0 through  7  only.   A  hexadecimal  constant
       consists  of  the  prefix 0x or 0X followed by a sequence of
       the decimal digits and the letters a (or A) through f (or F)
       with values 10 through 15 respectively.

Unfortunately, this produces the warning

    character constant too long for its type

instead, because the whole idea of multi-byte '...'
constants doesn't exist. I _assume_, what the author _meant_
is the value

    10*256+(((7*8)+7)*8)+7

but I'm not certain.

Peter


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