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Clarify that omitting nostack is a promise from the compiler to the programmer #1999

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traviscross merged 2 commits into from
Dec 9, 2025
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Clarify that omitting nostack is a promise from the compiler to the programmer #1999

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Clarify that omitting `nostack` is a promise from the compiler to the…
jyn514 Sep 16, 2025
596d292
Revise `supported-options.nostack`
traviscross Dec 9, 2025
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2 changes: 1 addition & 1 deletion src/inline-assembly.md
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Expand Up @@ -1226,7 +1226,7 @@ let _: () = unsafe {

r[asm.options.supported-options.nostack]
- `nostack`: The assembly code does not push data to the stack, or write to the stack red-zone (if supported by the target).
If this option is *not* used then the stack pointer is guaranteed to be suitably aligned (according to the target ABI) for a function call.
If this option is *not* used then the stack pointer is guaranteed by the compiler at the start of the assembly code to be suitably aligned (according to the target ABI) for a function call.

<!-- no_run: Test has undefined behavior at runtime -->
```rust,no_run
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