From 8cab209ef91cbda34bae8afa880f152c4f1473b0 Mon Sep 17 00:00:00 2001
From: Martino Facchin <m.facchin@arduino.cc>
Date: Thu, 1 Oct 2015 17:35:26 +0200
Subject: [PUSB] Fix static initialization order fiasco

For details see:
https://isocpp.org/wiki/faq/ctors#static-init-order-on-first-use
---
 libraries/HID/HID.cpp | 8 ++++++--
 libraries/HID/HID.h   | 5 +++++
 2 files changed, 11 insertions(+), 2 deletions(-)

(limited to 'libraries/HID')

diff --git a/libraries/HID/HID.cpp b/libraries/HID/HID.cpp
index b7aab6c..ff8e67b 100644
--- a/libraries/HID/HID.cpp
+++ b/libraries/HID/HID.cpp
@@ -21,7 +21,11 @@
 
 #if defined(USBCON)
 
-HID_ HID;
+HID_& HID()
+{
+	static HID_ obj;
+	return obj;
+}
 
 int HID_::getInterface(uint8_t* interfaceNum)
 {
@@ -113,7 +117,7 @@ HID_::HID_(void) : PUSBListNode(1, 1, epType),
                    protocol(1), idle(1)
 {
 	epType[0] = EP_TYPE_INTERRUPT_IN;
-	PluggableUSB.plug(this);
+	PluggableUSB().plug(this);
 }
 
 int HID_::begin(void)
diff --git a/libraries/HID/HID.h b/libraries/HID/HID.h
index 2cd0f4a..a7f5c68 100644
--- a/libraries/HID/HID.h
+++ b/libraries/HID/HID.h
@@ -93,6 +93,11 @@ private:
   uint8_t idle;
 };
 
+// Replacement for global singleton.
+// This function prevents static-initialization-order-fiasco
+// https://isocpp.org/wiki/faq/ctors#static-init-order-on-first-use
+HID_& HID();
+
 #define D_HIDREPORT(length) { 9, 0x21, 0x01, 0x01, 0, 1, 0x22, lowByte(length), highByte(length) }
 
 #endif // USBCON
-- 
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