diff -up qtbase-everywhere-src-5.15.2/src/corelib/text/qbytearray.h.foo qtbase-everywhere-src-5.15.2/src/corelib/text/qbytearray.h
--- qtbase-everywhere-src-5.15.2/src/corelib/text/qbytearray.h.foo	2020-10-27 03:02:11.000000000 -0500
+++ qtbase-everywhere-src-5.15.2/src/corelib/text/qbytearray.h	2021-02-06 17:05:04.879201352 -0600
@@ -51,6 +49,7 @@
 
 #include <string>
 #include <iterator>
+#include <limits>
 
 #ifdef truncate
 #error qbytearray.h must be included before any header file that defines truncate