Inhibit some -pedantic warnings

[Guillaume Poletto]

Hello,

I'd like to know if the warning inhibition option list given in man gcc 
was exhaustive. Because i'd like to shut off some particular warnings 
that appear when i compile using -Wall -pedantic.
Especially this kind of warning :
warning: string length `594' is greater than the length `509' ISO C89 
compilers are required to support
I don't find the option to shut off this warning

Thanks