diff options
| -rw-r--r-- | library/std/src/io/error/repr_bitpacked.rs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/library/std/src/io/error/repr_bitpacked.rs b/library/std/src/io/error/repr_bitpacked.rs index 803853a3c90..2f7d2e5d111 100644 --- a/library/std/src/io/error/repr_bitpacked.rs +++ b/library/std/src/io/error/repr_bitpacked.rs @@ -115,6 +115,15 @@ const TAG_CUSTOM: usize = 0b01; const TAG_OS: usize = 0b10; const TAG_SIMPLE: usize = 0b11; +/// The internal representation. +/// +/// See the module docs for more, this is just a way to hack in a check that we +/// indeed are not unwind-safe. +/// +/// ```compile_fail +/// fn is_unwind_safe<T: core::panic::UnwindSafe>() {} +/// is_unwind_safe::<std::io::Error>(); +/// ``` #[repr(transparent)] pub(super) struct Repr(NonNull<()>, PhantomData<ErrorData<Box<Custom>>>); |