diff --git a/examples/Makefile b/examples/Makefile
index 2b2204f..2678b6f 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -7,7 +7,7 @@ BINS = hello-ks13 hello-ks20 hello-ks20.clib2 \
        hello-stdio hello-stdio.clib2 hello-stdio.nix13 \
        hello-mui test-mmu \
        simple.library simple.library_r simple.device \
-       hello-iostream 
+       test-ctors hello-iostream 
 
 all: $(BINS) $(OBJS)
 
@@ -30,7 +30,13 @@ hello-stdio.clib2: hello-stdio.c
 	$(CC) -mcrt=clib2 -m68020 $(CFLAGS) -o $@ $<
 
 hello-iostream: hello-iostream.cpp
-	$(CXX) -noixemul -m68020 $(CXXFLAGS) -o $@ $<
+	$(CXX) -noixemul -m68020 $(CXXFLAGS) -o $@ $^
+
+test-ctors: test-ctors.cpp
+	$(CXX) -noixemul -m68020 $(CXXFLAGS) -D__A -c -o test-ctors-a.o $<
+	$(CXX) -noixemul -m68020 $(CXXFLAGS) -D__B -c -o test-ctors-b.o $<
+	$(CXX) -noixemul -m68020 $(CXXFLAGS) -c -o test-ctors.o $<
+	$(CXX) -noixemul -m68020 $(CXXFLAGS) -o $@ test-ctors*.o
 
 hello-mui: hello-mui.c
 	$(CC) -noixemul -m68020 -msmall-code $(CFLAGS) -o $@ $< -lmui
diff --git a/examples/test-ctors.cpp b/examples/test-ctors.cpp
new file mode 100644
index 0000000..0f827d9
--- /dev/null
+++ b/examples/test-ctors.cpp
@@ -0,0 +1,29 @@
+#include <stdio.h>
+
+#ifdef __A
+struct A {
+  int i;
+  A(int _i) { i = _i; puts("ctor A"); }
+  ~A() { puts("dtor A"); }
+};
+
+A a(10);
+#endif
+
+#ifdef __B
+struct B {
+  int i;
+  B(int _i) { i = _i; puts("ctor B"); }
+  ~B() { puts("dtor B"); }
+};
+
+B b(20);
+#endif
+
+#if !defined(__A) && !defined(__B)
+int main()
+{
+  puts("hello world!");
+  return 0;
+}
+#endif
diff --git a/submodules/gcc-2.95.3 b/submodules/gcc-2.95.3
index 965e443..f25bf19 160000
--- a/submodules/gcc-2.95.3
+++ b/submodules/gcc-2.95.3
@@ -1 +1 @@
-Subproject commit 965e443fcfaa8607aa88791df6faf70132be0a83
+Subproject commit f25bf1943600988cf2c9a91f05eb131d0908d2c2
diff --git a/submodules/libnix b/submodules/libnix
index b1c9ff1..7ab6f71 160000
--- a/submodules/libnix
+++ b/submodules/libnix
@@ -1 +1 @@
-Subproject commit b1c9ff1a739e5726416f73b9e528f639df9a2717
+Subproject commit 7ab6f718046681efd4ce5c20babdf3fab99cab61