On Sat, 23 Nov 2019 at 13:56, Jonny Grant <jg@xxxxxxxx> wrote: > > I see on my 64bit Ubuntu PC that size_t is 8 bytes, that is 64bits, > however I see a warning: > > $ g++-8 -Wall -Wextra -o size_t size_t.cpp > size_t.cpp: In function ‘int main()’: > size_t.cpp:11:21: warning: left shift count >= width of type > [-Wshift-count-overflow] > size_t big = 1<<40; > ^~ > > > > Same on Godbolt trunk. > Is this an issue? Why do you expect a different result for these? A small = 1 << 40; B big = 1 << 40; In both cases the expression is 1 << 40, the type of A or B is irrelevant.
