now we also have a examples/ directory for self-contained examples,
and this is already used to document DynBlock
diff --git a/doc/snippets/compile_snippet.cpp.in b/doc/snippets/compile_snippet.cpp.in
index 552a5db..952a3ee 100644
--- a/doc/snippets/compile_snippet.cpp.in
+++ b/doc/snippets/compile_snippet.cpp.in
@@ -4,4 +4,5 @@
 int main(int, char**)
 {
 ${snippet_source_code}
+return 0;
 }