================
@@ -0,0 +1,80 @@
+// RUN: %clang_cc1 -fsyntax-only -Wlifetime-safety-lifetimebound-violation
-verify %s
+
+#include "Inputs/lifetime-analysis.h"
+
+struct [[gsl::Owner]] MyObj {
+ int id;
+ ~MyObj() {} // Non-trivial destructor
+};
+
+struct [[gsl::Pointer()]] View {
+ View(const MyObj &); // Borrows from MyObj
+ View();
+ void use() const;
+};
+
+bool cond();
+
+View not_lb(const MyObj &obj);
+
+View lb(const MyObj &obj [[clang::lifetimebound]]);
+
+View return_through_unannotated_passthrough(
+ const MyObj &obj [[clang::lifetimebound]]) { // expected-warning {{could
not verify that the return value can be lifetime bound to 'obj'}}
+ return not_lb(obj);
+}
+
+View return_through_lifetimebound_passthrough(
+ const MyObj &obj [[clang::lifetimebound]]) {
+ return lb(obj);
+}
+
+View lb2(const MyObj &obj [[clang::lifetimebound]]) {
+ return lb(obj);
+}
+
+View lose_lb(const MyObj &obj [[clang::lifetimebound]]) { // expected-warning
{{could not verify that the return value can be lifetime bound to 'obj'}}
+ return not_lb(obj);
+}
+
+View return_through_alias(const MyObj &obj [[clang::lifetimebound]]) {
+ const MyObj &alias = obj;
+ return alias;
+}
+
+View return_alias_through_unannotated_passthrough(
+ const MyObj &obj [[clang::lifetimebound]]) { // expected-warning {{could
not verify that the return value can be lifetime bound to 'obj'}}
+ const MyObj &alias = obj;
+ return not_lb(alias);
+}
+
+View return_through_two_lifetimebound_calls(
+ const MyObj &obj [[clang::lifetimebound]]) {
+ return lb2(obj);
+}
----------------
usx95 wrote:
This does not look useful as compared to other test with a `lb(obj)`. Maybe
have `lb(lb(obj))` or something similar
https://github.com/llvm/llvm-project/pull/196144
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