First Checked In.

js/js2/cplusplustests/cplusplustests.cpp

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+#include <cstddef>
+#include <cstdio>
+#include <cstdlib>
+#include <new>
+
+using namespace std;
+
+struct Arena {
+	const char *name;
+
+	Arena(const char *name): name(name) {}
+};
+
+
+void *operator new(size_t size, Arena &arena);
+void operator delete(void *p);
+
+void *operator new(size_t size, Arena &arena)
+{
+	void *p = malloc(size);
+	printf("Allocating %d bytes at %p using arena \"%s\"\n", size, p, arena.name);
+	return p;
+}
+
+void operator delete(void *p)
+{
+	printf("Deleting object at %p\n", p);
+}
+
+
+struct C {
+	int n;
+
+	C(int n, bool bad = false);
+	~C();
+};
+
+struct Exception {
+	int num;
+
+	explicit Exception(int n): num(n) {}
+};
+
+
+C::C(int n, bool bad): n(n)
+{
+	printf("Constructing C #%d at %p\n", n, this);
+	if (bad) {
+		printf("Throwing %d; constructor aborted\n", n);
+		throw Exception(n);
+	}
+}
+
+C::~C()
+{
+	printf("Destroying C #%d at %p\n", n, this);
+}
+
+
+static void constructorTest1(int n, bool bad)
+{
+	try {
+		printf("Calling C(%d,%d)\n", n, (int)bad);
+		{
+			C c(n, bad);
+			printf("We have C #%d\n", c.n);
+		}
+		printf("C is out of scope\n");
+	} catch (Exception &e) {
+		printf("Caught exception %d\n", e.num);
+	}
+	printf("\n");
+}
+
+
+static void constructorTest2(int n, bool bad)
+{
+	try {
+		printf("Calling new C(%d,%d)\n", n, (int)bad);
+		{
+			C *c = new C(n, bad);
+			printf("We have C #%d\n", c->n);
+			delete c;
+		}
+		printf("C is out of scope\n");
+	} catch (Exception &e) {
+		printf("Caught exception %d\n", e.num);
+	}
+	printf("\n");
+}
+
+
+static void constructorTest3(int n, bool bad)
+{
+	try {
+		printf("Calling new(arena) C(%d,%d)\n", n, (int)bad);
+		{
+			Arena arena("My arena");
+			C *c = new(arena) C(n, bad);
+			printf("We have C #%d\n", c->n);
+		}
+		printf("C is out of scope\n");
+	} catch (Exception &e) {
+		printf("Caught exception %d\n", e.num);
+	}
+	printf("\n");
+}
+
+
+int main()
+{
+	printf("Beginning constructor tests\n\n");
+	constructorTest1(1, false);
+	constructorTest1(2, true);
+	constructorTest2(3, false);
+	constructorTest2(4, true);
+	constructorTest3(5, false);
+	constructorTest3(6, true);
+	printf("Ending constructor tests\n");
+	return 0;
+}