From 6ded14fb0eb160cc5a41f850dc723553df7240d0 Mon Sep 17 00:00:00 2001
From: "Blake W. Ford" <blakewford@gmail.com>
Date: Tue, 12 Feb 2019 01:26:32 -0600
Subject: [PATCH] Use local label for loop in fillScreen() assembly

To fix error: symbol loopto is already defined with -O3 optimization.
---
 src/Arduboy2.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Arduboy2.cpp b/src/Arduboy2.cpp
index 23a023a..abe4cb4 100644
--- a/src/Arduboy2.cpp
+++ b/src/Arduboy2.cpp
@@ -678,7 +678,7 @@ void Arduboy2Base::fillScreen(uint8_t color)
     "ldi %[color], 0xFF\n"
     // counter = 0
     "clr __tmp_reg__\n"
-    "loopto:\n"
+    "1:\n"
     // (4x) push zero into screen buffer,
     // then increment buffer position
     "st Z+, %[color]\n"
@@ -689,7 +689,7 @@ void Arduboy2Base::fillScreen(uint8_t color)
     "inc __tmp_reg__\n"
     // repeat for 256 loops
     // (until counter rolls over back to 0)
-    "brne loopto\n"
+    "brne 1b\n"
     : [color] "+d" (color),
       "+z" (bPtr)
     :