4 files changed, 4 insertions, 0 deletions
diff --git a/include/stc/carc.h b/include/stc/carc.h
index 74205caf..756b604f 100644
--- a/include/stc/carc.h
+++ b/include/stc/carc.h
@@ -22,6 +22,7 @@
  */
 
 /* carc: atomic reference counted shared_ptr
+#define i_implement
 #include <stc/cstr.h>
 
 typedef struct { cstr name, last; } Person;
diff --git a/include/stc/cbox.h b/include/stc/cbox.h
index 393b904b..699b32ac 100644
--- a/include/stc/cbox.h
+++ b/include/stc/cbox.h
@@ -23,6 +23,7 @@
  */
 
 /* cbox: heap allocated boxed type
+#define i_implement
 #include <stc/cstr.h>
 
 typedef struct { cstr name, email; } Person;
diff --git a/include/stc/csmap.h b/include/stc/csmap.h
index fbfea8dd..e8138926 100644
--- a/include/stc/csmap.h
+++ b/include/stc/csmap.h
@@ -24,6 +24,7 @@
 // Sorted/Ordered set and map - implemented as an AA-tree.
 /*
 #include <stdio.h>
+#define i_implement
 #include <stc/cstr.h>
 
 #define i_tag sx  // Sorted map<cstr, double>
diff --git a/include/stc/cvec.h b/include/stc/cvec.h
index 1a0fb118..512dbf67 100644
--- a/include/stc/cvec.h
+++ b/include/stc/cvec.h
@@ -22,6 +22,7 @@
  */
 
 /*
+#define i_implement
 #include <stc/cstr.h>
 #include <stc/forward.h>