================
@@ -3967,6 +3967,69 @@ Attribute ``trivial_abi`` has no effect in the following
cases:
}];
}
+
+def LifetimeCaptureByDocs : Documentation {
+ let Category = DocCatFunction;
+ let Content = [{
+ The ``lifetime_capture_by(X)`` attribute on a function parameter or
implicit object
+parameter indicates that references to arguments passed to such parameters may
be
+captured by the capturing entity ``X``.
+
+The capturing entity ``X`` can be one of the following:
+- Another (named) function parameter.
+
+ .. code-block:: c++
+
+ void addToSet(std::string_view a [[clang::lifetime_capture_by(s)]],
std::set<std::string_view>& s) {
+ s.insert(a);
+ }
+
+- ``this`` (in case of member functions).
+
+ .. code-block:: c++
+
+ class S {
+ void addToSet(std::string_view a [[clang::lifetime_capture_by(this)]]) {
+ s.insert(a);
+ }
+ std::set<std::string_view> s;
+ };
+
+- 'global', 'unknown' (without quotes).
+
+ .. code-block:: c++
+
+ std::set<std::string_view> s;
+ void addToSet(std::string_view a [[clang::lifetime_capture_by(global)]]) {
----------------
Xazax-hun wrote:
I wonder if @erichkeane has an opinion on this.
https://github.com/llvm/llvm-project/pull/111499
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