Re: accumulate with multiplies as reduction returns wrong result.

[Andrew Pinski via Gcc-bugs]

On Sat, Jan 25, 2025 at 6:52 PM Kok How Teh via Gcc-bugs
<gcc-bugs@gcc.gnu.org> wrote:
>
> vector<long> a = {3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14};
> assert(43589145600 == accumulate(a.begin(), a.end(), 1, multiplies()));
>
> That assertion fails! What do I miss?

You missed that 1 is in type int and you want to accumulate in long
not get an overflow.  So you should use 1l or (long)1.

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Thanks,
Andrew