Messages in this thread | | | From | Segher Boessenkool <> | Subject | Re: [PATCH 1/2] Add C99-style constructor macros for specific-sized integers | Date | Mon, 3 Mar 2008 21:23:34 +0100 |
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>> Do these new macros really buy anything over just writing LL in the >> few places that 64-bit constants are used? > > It gives you macros that matches the s64/u64 et al definitions are, > thus avoiding another class of spurious warnings.
GCC doesn't warn for implicit narrowing that doesn't change value.
The printk() example is a read herring IMHO, since variable arguments functions are "very speshul" anyway, and require explicit casts in many cases.
Segher
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