Enforce C11 via Makefile, explicate POSIX dependencies in source files.

[plomrogue] / src / client / windows.c

diff --git a/src/client/windows.c b/src/client/windows.c
index 28654b4b6c28ddd12fe2d78fbeaef4a002296700..e84d652554c74ba12face4114501818193f500ad 100644 (file)
--- a/src/client/windows.c
+++ b/src/client/windows.c
@@ -1,5 +1,6 @@
 /* src/client/windows.c */
 
+#define _POSIX_C_SOURCE 200809L /* strnlen() */
 #include "windows.h"
 #include <ncurses.h> /* chtype, getmaxx(), getmaxy(), erase(), werase(),
                       * endwin(), delwin(), wnoutrefresh(), pnoutrefresh(),