Rollup of 6 pull requests #59689
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Rollup of 6 pull requests #59689
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Functions with uninhabited return values are already marked `noreturn`,
but we were still generating return instructions for this. When running
with `-C passes=lint`, LLVM prints:
Unusual: Return statement in function with noreturn attribute
The LLVM manual makes a stronger statement about `noreturn` though:
> This produces undefined behavior at runtime if the function ever does
dynamically return.
We now emit an `abort` anywhere that would have tried to return an
uninhabited value.
…dtolnay Document std::fs::File close behavior ignoring errors Resolves rust-lang#52685
update miri r? @oli-obk Fixes rust-lang#59477
update stdsimd Cc @gnzlbg
Never return uninhabited values at all
Functions with uninhabited return values are already marked `noreturn`,
but we were still generating return instructions for this. When running
with `-C passes=lint`, LLVM prints:
Unusual: Return statement in function with noreturn attribute
The LLVM manual makes a stronger statement about `noreturn` though:
> This produces undefined behavior at runtime if the function ever does
dynamically return.
We now emit an `abort` anywhere that would have tried to return an
uninhabited value.
Fixes rust-lang#48227
cc rust-lang#7463 rust-lang#48229
r? @eddyb
Add description for -Os and -Oz in rustc.1
… r=luqmana Temporarily disable stack probing for gnux32.
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@bors r+ p=6 |
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📌 Commit 641b2a4 has been approved by |
bors
added
the
S-waiting-on-bors
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Adding #59628. |
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r? @ghost