[Bug c++/90885] GCC should warning about 2^16 and 2^32 and 2^64

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90885

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
And maybe also 10^X where X is a literal.
https://codesearch.isocpp.org/cgi-bin/cgi_ppsearch?q=10+%5E&search=Search

A sample:

        tp->tv_sec  = attributes[0] / 10^9;
        tp->tv_nsec = attributes[0] % 10^9;

     range->pmin[TREND_FCT] = -10^10;
     range->pmax[TREND_MEAN] = 10^10;


    #define IRQ_CHINT5_LEVEL        (12 ^ 7)
    #define IRQ_CHINT4_LEVEL        (11 ^ 7)
    #define IRQ_CHINT3_LEVEL        (10 ^ 7)
    #define IRQ_CHINT2_LEVEL        (9 ^ 7)
    #define IRQ_CHINT1_LEVEL        (8 ^ 7)