From f2e3c9896e6f1b871e3889bee40c8f0ea69acad7 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Fri, 11 May 2018 23:38:29 -0500
Subject: [PATCH] Fix compile warnings in backtrace

Part of #10688

Co-Authored-By: ejtagle <ejtagle@hotmail.com>
---
 Marlin/src/backtrace/backtrace.cpp   | 2 +-
 Marlin/src/backtrace/unwarmbytab.cpp | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/Marlin/src/backtrace/backtrace.cpp b/Marlin/src/backtrace/backtrace.cpp
index 737626744..07cb0692f 100644
--- a/Marlin/src/backtrace/backtrace.cpp
+++ b/Marlin/src/backtrace/backtrace.cpp
@@ -66,7 +66,7 @@ static const UnwindCallbacks UnwCallbacks = {
 void backtrace(void) {
 
   UnwindFrame btf;
-  uint32_t sp,lr,pc;
+  uint32_t sp = 0, lr = 0, pc = 0;
 
   // Capture the values of the registers to perform the traceback
   __asm__ __volatile__ (
diff --git a/Marlin/src/backtrace/unwarmbytab.cpp b/Marlin/src/backtrace/unwarmbytab.cpp
index 607b42672..ec8a9a066 100644
--- a/Marlin/src/backtrace/unwarmbytab.cpp
+++ b/Marlin/src/backtrace/unwarmbytab.cpp
@@ -129,7 +129,6 @@ static UnwResult UnwTabStateInit(const UnwindCallbacks *cb, UnwTabState *ucb, ui
  */
 static UnwResult UnwTabExecuteInstructions(const UnwindCallbacks *cb, UnwTabState *ucb) {
 
-  UnwResult err;
   int instruction;
   uint32_t mask;
   uint32_t reg;