[committed] analyzer: add test for placement new

[David Malcolm]

Successfully regrtested on x86_64-pc-linux-gnu.
Pushed to master as r11-3472-gd4a906e7b51f3fc31f3328810f45ae4cf2e7bbc3.

gcc/testsuite/ChangeLog:
	PR analyzer/94355
	* g++.dg/analyzer/placement-new.C: New test.
---
 gcc/testsuite/g++.dg/analyzer/placement-new.C | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/analyzer/placement-new.C

diff --git a/gcc/testsuite/g++.dg/analyzer/placement-new.C b/gcc/testsuite/g++.dg/analyzer/placement-new.C
new file mode 100644
index 00000000000..8250f45b9d9
--- /dev/null
+++ b/gcc/testsuite/g++.dg/analyzer/placement-new.C
@@ -0,0 +1,26 @@
+#include <new>
+
+/* Placement new.  */
+
+void test_1 (void)
+{
+  char buf[sizeof(int)];
+  int *p = new(buf) int (42);
+}
+
+/* Placement new[].  */
+
+void test_2 (void)
+{
+  char buf[sizeof(int) * 10];
+  int *p = new(buf) int[10];
+}
+
+/* Delete of placement new.  */
+
+void test_3 (void)
+{
+  char buf[sizeof(int)];
+  int *p = new(buf) int (42);
+  delete p; // { dg-warning "memory not on the heap" }
+}
-- 
2.26.2