================
@@ -793,3 +806,202 @@ void test13() {
}
} // namespace GH100526
+
+namespace lifetime_capture_by {
+struct S {
+ const int *x;
+ void captureInt(const int&x [[clang::lifetime_capture_by(this)]]) { this->x
= &x; }
+ void captureSV(std::string_view sv [[clang::lifetime_capture_by(this)]]);
+};
+///////////////////////////
+// Detect dangling cases.
+///////////////////////////
+void captureInt(const int&x [[clang::lifetime_capture_by(s)]], S&s);
+void captureRValInt(int&&x [[clang::lifetime_capture_by(s)]], S&s);
+void noCaptureInt(int x [[clang::lifetime_capture_by(s)]], S&s);
+
+std::string_view substr(const std::string& s [[clang::lifetimebound]]);
+std::string_view strcopy(const std::string& s);
+
+void captureSV(std::string_view x [[clang::lifetime_capture_by(s)]], S&s);
+void captureRValSV(std::string_view&& x [[clang::lifetime_capture_by(s)]],
S&s);
+void noCaptureSV(std::string_view x, S&s);
+void captureS(const std::string& x [[clang::lifetime_capture_by(s)]], S&s);
+void captureRValS(std::string&& x [[clang::lifetime_capture_by(s)]], S&s);
+
+const std::string& getLB(const std::string& s[[clang::lifetimebound]]);
+const std::string& getLB(std::string_view sv[[clang::lifetimebound]]);
+const std::string* getPointerLB(const std::string& s[[clang::lifetimebound]]);
+const std::string* getPointerNoLB(const std::string& s);
+
+void capturePointer(const std::string* x [[clang::lifetime_capture_by(s)]],
S&s);
+
+struct ThisIsCaptured {
+ void capture(S& s) [[clang::lifetime_capture_by(s)]];
+ void bar(S& s) [[clang::lifetime_capture_by(abcd)]]; // expected-error
{{'lifetime_capture_by' attribute argument 'abcd' is not a known function
parameter}}
+ void baz(S& s) [[clang::lifetime_capture_by(this)]]; // expected-error
{{'lifetime_capture_by' argument references itself}}
+};
+
+void captureByGlobal(std::string_view s
[[clang::lifetime_capture_by(global)]]);
+void captureByUnknown(std::string_view s
[[clang::lifetime_capture_by(unknown)]]);
+
+void use() {
+ std::string_view local_sv;
+ std::string local_s;
+ S s;
----------------
usx95 wrote:
Renamed to `X x;` to make it similar to `lifetime_capture_by(X)`.
https://github.com/llvm/llvm-project/pull/115921
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