From 02b573793a1dc5c68293a39bd65a022ed253275a Mon Sep 17 00:00:00 2001
From: Joseph Duchesne <joseph@avidbots.com>
Date: Mon, 14 Aug 2023 11:07:23 -0400
Subject: [PATCH] Fix crash when using FDCAN3 RX IRQ on STM32G473 (and others)

---
 targets/TARGET_STM/can_api.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/targets/TARGET_STM/can_api.c b/targets/TARGET_STM/can_api.c
index 293dedaa0f..73bfa81f34 100644
--- a/targets/TARGET_STM/can_api.c
+++ b/targets/TARGET_STM/can_api.c
@@ -24,7 +24,13 @@
 #include "PeripheralPins.h"
 #include "mbed_error.h"
 
+// Some STM32G4 series (and others) have 3 FDCAN devices
+// while others have 2
+#ifdef FDCAN3
+static uintptr_t can_irq_contexts[3] = {0};
+#else
 static uintptr_t can_irq_contexts[2] = {0};
+#endif
 static can_irq_handler irq_handler;
 
 /** Call all the init functions