[clang] [Clang SA]: add support for mismatched ownership_returns+ownership_takes calls for custom allocation classes (PR #98941)

[Balazs Benics via cfe-commits]

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@@ -60,6 +67,41 @@ void testMalloc8() {
   operator delete[](p); // expected-warning{{Memory allocated by malloc() should be deallocated by free(), not operator delete[]}}
 }
 
+void testMalloc9() {
+  int *p = (int *)my_malloc(sizeof(int));
+  my_free(p); // no warning
+}
+
+void testMalloc10() {
+  int *p = (int *)my_malloc1(sizeof(int));
+  my_free1(p); // no warning
+}
+
+void testMalloc11() {
+  int *p = (int *)my_malloc2(sizeof(int));
+  my_free23(p); // no warning
+}
+
+void testMalloc12() {
+  int *p = (int *)my_malloc1(sizeof(int));
+  my_free(p); // expected-warning{{Memory allocated by my_malloc1() should be deallocated by function that takes ownership of 'malloc1', not my_free(), which takes ownership of 'malloc'}}
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steakhal wrote:

Ah, I see. The phrasing wasn't clear to me. Maybe because we don't have a clear spec for this attribute, thus it's difficult to make out things that have special meaning.
I think we should quote function names, yes.

https://github.com/llvm/llvm-project/pull/98941