Issue 4464/2: include hygiene: break cycles, remove duplicate includes etc.

[lilypond.git] / flower / include / interval.hh

diff --git a/flower/include/interval.hh b/flower/include/interval.hh
index 8160b37c2ca4b943cca8cbd4805642e3e0ca462a..88cd01f89f8342a2d478ce39a6f2b6b4d8812d90 100644 (file)
--- a/flower/include/interval.hh
+++ b/flower/include/interval.hh
@@ -23,6 +23,7 @@
 #include <math.h>
 
 #include "flower-proto.hh"
+#include "std-string.hh"
 #include "drul-array.hh"
 
 /* A T interval.  This represents the closed interval [left,right].