From 7ca484ac85a260fc38d37e1bee4f4e7410c8a8df Mon Sep 17 00:00:00 2001
From: Richard Campbell <rlcamp@users.noreply.github.com>
Date: Sun, 13 Nov 2022 22:13:30 -0800
Subject: [PATCH] Prevent LTO from omitting the ISR vector table for SAMD21 too

---
 cores/arduino/cortex_handlers.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cores/arduino/cortex_handlers.c b/cores/arduino/cortex_handlers.c
index beb6776c..953d1a6e 100644
--- a/cores/arduino/cortex_handlers.c
+++ b/cores/arduino/cortex_handlers.c
@@ -408,6 +408,7 @@ extern uint32_t __bss_end__;
 extern uint32_t __StackTop;
 
 /* Exception Table */
+__attribute__ ((used))
 __attribute__ ((section(".isr_vector"))) const DeviceVectors exception_table =
 {
   /* Configure Initial Stack Pointer, using linker-generated symbols */