From 7a93478a99a23004e44758603bc8a4953f230205 Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <ivan@espressif.com>
Date: Fri, 13 Oct 2017 02:15:32 +0800
Subject: [PATCH] pgmspace: expand varargs correctly in printf_P (#2819)

---
 cores/esp8266/pgmspace.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cores/esp8266/pgmspace.cpp b/cores/esp8266/pgmspace.cpp
index 75de541d06..ed81039f46 100644
--- a/cores/esp8266/pgmspace.cpp
+++ b/cores/esp8266/pgmspace.cpp
@@ -234,7 +234,7 @@ int printf_P(PGM_P formatP, ...) {
     char* format = new char[fmtLen + 1];
     strcpy_P(format, formatP);
 
-    ret = printf(format, arglist);
+    ret = vprintf(format, arglist);
 
     delete[] format;