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| -rw-r--r-- | src/doc/reference/src/unsafety.md | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/doc/reference/src/unsafety.md b/src/doc/reference/src/unsafety.md new file mode 100644 index 000000000..915fa5b03 --- /dev/null +++ b/src/doc/reference/src/unsafety.md @@ -0,0 +1,19 @@ +# Unsafety + +Unsafe operations are those that can potentially violate the memory-safety +guarantees of Rust's static semantics. + +The following language level features cannot be used in the safe subset of +Rust: + +- Dereferencing a [raw pointer]. +- Reading or writing a [mutable] or [external] static variable. +- Accessing a field of a [`union`], other than to assign to it. +- Calling an unsafe function (including an intrinsic or foreign function). +- Implementing an [unsafe trait]. + +[`union`]: items/unions.md +[mutable]: items/static-items.md#mutable-statics +[external]: items/external-blocks.md +[raw pointer]: types/pointer.md +[unsafe trait]: items/traits.md#unsafe-traits |