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panic runtime and C-unwind documentation #1226

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panic runtime and C-unwind documentation #1226

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7965d3d
panic runtime and C-unwind documentation
BatmanAoD Oct 2, 2024
d1339c4
Rust version number for destructors guarantee
BatmanAoD Nov 24, 2024
6ce66b4
Fix identifeirs in functions.md and move the guarantee about destruct…
chorman0773 Nov 25, 2024
276ff8e
Add identifier syntax to panic.md
chorman0773 Nov 25, 2024
a540310
Move note in linkage.md
chorman0773 Nov 25, 2024
28b3ffd
Fix whitespace issues in previous commit
chorman0773 Nov 25, 2024
621dac9
Fix omitted whitespace issue (thanks VSC)
chorman0773 Nov 25, 2024
db97d54
Update src/items/functions.md
chorman0773 Nov 26, 2024
117ca17
fix wording regarding UB due to unwinding linkage
RalfJung Nov 29, 2024
b7a53f3
improve terminology
RalfJung Dec 21, 2024
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Move note in linkage.md
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@chorman0773
chorman0773 committed Nov 25, 2024
commit a540310c3c8b41218cff9e34cbf54fadd959dfa1
7 changes: 4 additions & 3 deletions src/linkage.md
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Expand Up @@ -296,15 +296,16 @@ with these characteristics:
> cause a link-error, since that ABI is not expected to be used as an
> entrypoint into a static or shared library.

> **Note**: the restriction can only be violated when mixing code with different
> `-C panic` flags. This is not possible in normal use of cargo, so most users
> need not be concerned about this.

r[link.foreign-code.prohibited.lint.ffi_unwind_calls]
To guarantee that a library will be sound (and linkable with `rustc`)
regardless of the panic mode used at link-time, the [`ffi_unwind_calls` lint]
may be used. The lint flags any calls to `-unwind` foreign functions or
function pointers.

> **Note**: the restriction can only be violated when mixing code with different
> `-C panic` flags. This is not possible in normal use of cargo, so most users
> need not be concerned about this.

[`cfg` attribute `target_feature` option]: conditional-compilation.md#target_feature
[`ffi_unwind_calls` lint]: ../rustc/lints/listing/allowed-by-default.html#ffi-unwind-calls
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