uint32_t a, b;
...
uint32_t c = a * b; // could result in undefined behavior if sizeof(int)>4 (h/t @RichFelker)
@kludgebox @ch3root @matthew_d_green On GCC int is always 32-bit so a*b has type unsigned int and no promotion is involved.
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@kludgebox @ch3root @matthew_d_green On GCC int is always 32-bit so a*b has type unsigned int and no promotion is involved.