support C/C++ cases, using __cplusplus

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@6345 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/overload_extend.i

@@ -5,16 +5,44 @@
     int test() { return 0; }
     int test(int x) { x = 0; return 1; }
     int test(char *s) { s = 0; return 2; }
+#ifdef __cplusplus
     int test(double x, double y = 0) { x = 0; y = 0; return 3; }
+#else
+    int test(double x, double y) { x = 0; y = 0; return 3; }
+#endif
 };
 
+
 %inline %{
 struct Foo {
+#ifdef __cplusplus
     int test() { return -1; }
+#endif
 };
 %}
 
 
+%extend Bar {
+#ifdef __cplusplus
+  Bar() {
+    return new Bar();
+  }
+  ~Bar() {
+    if (self) delete self;
+  }
+#else
+  Bar() {
+    return (Bar *) malloc(sizeof(Bar));
+  }
+  ~Bar() {
+    if (self) free(self);
+  }
+#endif
+}
 
+%inline %{
+typedef struct {
+} Bar;
+%}