diff --git a/ChangeLog b/ChangeLog
index 7637fbf..b11a39e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,7 @@
 	* src/base/cl_maybe_inline.h: New file.
 	* src/base/cl_inline2.h: New file.
 	* src/base/cl_inline.h: New file.
+	* src/base/string/cl_st_make0.h: New file.
 	* src/base/cl_macros.h: Pull in cl_maybe_inline.h.
 	* src/base/string/cl_st_concat1.cc: Use new CL_INLINE macros and the
 	new *_inline functions.
diff --git a/src/base/string/cl_st_make0.h b/src/base/string/cl_st_make0.h
new file mode 100644
index 0000000..932e188
--- /dev/null
+++ b/src/base/string/cl_st_make0.h
@@ -0,0 +1,11 @@
+#ifndef _CL_ST_MAKE0_H
+#define _CL_ST_MAKE0_H
+#include "cln/string.h"
+
+namespace cln {
+
+extern cl_heap_string* cl_make_heap_string (unsigned long len);
+
+}  // namespace cln
+
+#endif /* _CL_ST_MAKE0_H */