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Rare case of not properly rounding up thread stack size on Windows · Issue #9445...
source link: https://github.com/rust-lang/rust/issues/94454
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The following code states that stack_size rounds up to the next 64 kB:
// Round up to the next 64 kB because that's what the NT kernel does,
// might as well make it explicit.
let stack_size = (stack + 0xfffe) & (!0xfffe);
However, if stack is any of 0xffff * x + 1 (where x is a non-negative number) it will not properly round up. Additionally, the least significant byte is retained, I doubt that is intended either. Am I missing something? Otherwise I believe it's meant to be 0xffff instead of 0xfffe to properly round up.
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