Bug 19437 – first boolean operation with a double after 'each!' always true

``` // The magic happens on Windows 32-bit dmd 2.83, no -O/-inline/-m64/Posix/LDC nothrow: pure: @safe: // for good measure struct S { double num; } void main() { import std.algorithm: each; S[] sList = new S[7]; // with 6 the magic won't happen sList.each!(x => x.num); // important double two = 2; // with int the magic won't happen assert(two != two, "A"); assert(two == two, "B"); assert(two != two, "C"); assert(two == two, "D"); } ``` Q: Which of the four assertions throws the AssertError? A: assert C! I came across this when tests curiously failed reporting things like "expected 74, was 74". It seems the first condition involving a double after the each! will be true. In the non-reduced version the each! is even called in a different method. You can also replace assert A with this: ``` if (two != 2) writeln("2 != ", two); ``` And you will see "2 != 2". But only once, you can't duplicate the if-statement and expect the same result.

linux 32-bit too (-m32 on x86_64 actually)

*** This issue has been marked as a duplicate of issue 18573 ***