================
@@ -1980,3 +1980,117 @@ void outer_pointer_outlives_inner_pointee() {
}
} // namespace LoopLocalPointers
+
+namespace array {
+
+void element_use_after_scope() {
+ int* p;
+ {
+ int a[10]{};
+ p = &a[2]; // expected-warning {{object whose reference is captured does
not live long enough}}
+ } // expected-note {{destroyed here}}
+ (void)*p; // expected-note {{later used here}}
+}
+
+int* element_use_after_return() {
+ int a[10]{};
+ int* p = &a[0]; // expected-warning {{address of stack memory is returned
later}}
+ return p; // expected-note {{returned here}}
+}
+
+void element_use_same_scope() {
+ int a[10]{};
+ int* p = &a[0];
+ (void)*p;
+}
+
+void element_reassigned_safe() {
+ int safe[10]{};
+ int* p;
+ {
+ int a[10]{};
+ p = &a[0];
+ }
+ p = &safe[0]; // rescued
+ (void)*p;
+}
+
+void multidimensional_use_after_scope() {
+ int* p;
+ {
+ int a[3][4]{};
+ p = &a[1][2]; // expected-warning {{object whose reference is captured
does not live long enough}}
+ } // expected-note {{destroyed here}}
+ (void)*p; // expected-note {{later used here}}
+}
+
+void member_array_element_use_after_scope() {
+ struct S {
+ int arr[10];
+ int b;
+ };
+ int* p;
+ {
+ S s;
+ p = &s.arr[0]; // expected-warning {{object whose reference is captured
does not live long enough}}
+ } // expected-note {{destroyed here}}
+ (void)*p; // expected-note {{later used here}}
+}
+
+void array_of_pointers_use_after_scope() {
+ int** p;
+ {
+ int x = 0;
+ int* a[10] = {&x};
----------------
Xazax-hun wrote:
Could we have a test where a dangling pointer is inside the array?
I suspect that we do not catch that problem just yet but it would be nice to
still cover it and have a FIXME.
https://github.com/llvm/llvm-project/pull/186902
_______________________________________________
cfe-commits mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
