From 2ea175eb692dfc250af8f1ea8f60ff25490ccf08 Mon Sep 17 00:00:00 2001
From: Peter Zhu <peter@peterzhu.ca>
Date: Tue, 22 Feb 2022 10:15:21 -0500
Subject: [PATCH] Fix compiler warning for uninitialized variable

Fixes this compiler warning:

warning: 'loc' may be used uninitialized in this function [-Wmaybe-uninitialized]
	                     bt_yield_loc(loc - cfunc_counter, cfunc_counter, btobj);
---
 vm_backtrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vm_backtrace.c b/vm_backtrace.c
index cc4e8875fc..27e108af61 100644
--- a/vm_backtrace.c
+++ b/vm_backtrace.c
@@ -590,7 +590,7 @@ rb_ec_partial_backtrace_object(const rb_execution_context_t *ec, long start_fram
     ptrdiff_t size;
     rb_backtrace_t *bt;
     VALUE btobj = backtrace_alloc(rb_cBacktrace);
-    rb_backtrace_location_t *loc;
+    rb_backtrace_location_t *loc = NULL;
     unsigned long cfunc_counter = 0;
     GetCoreDataFromValue(btobj, rb_backtrace_t, bt);