On Thu, 8 Oct 2020 at 11:43, Maxim Uvarov <maxim.uva...@linaro.org> wrote: > > On Thu, 8 Oct 2020 at 13:27, Peter Maydell <peter.mayd...@linaro.org> wrote: > > > > On Thu, 8 Oct 2020 at 11:21, Maxim Uvarov <maxim.uva...@linaro.org> wrote: > > > Interesting why gcc does not warn on 64bit signed to 32bit unsigned > > > truncation here. Looks like it's too smart to understand > > > that value fits in 32 bits. > > > > What truncation? 1000000000 in decimal is 0x3B9ACA00 in hex: > > the number fits in an 32 bit integer without truncation.
> I meant that LL is an long long int which is 64 bit size type. And > then you pass it to uint32_t. Yes, that's fine, because it fits. The LL ensures that if you do a calculation like: uint64_t max_timeout = 16 * NANOSECONDS_PER_SECOND; it isn't incorrectly done as 32-bit arithmetic. thanks -- PMM
