From ee5602a23a3ba50c2c7f089f85cb78bd1c61eaa7 Mon Sep 17 00:00:00 2001
From: Tor Egge <Tor.Egge@online.no>
Date: Thu, 18 Apr 2024 12:26:38 +0200
Subject: Add variable-length array comments.

---
 vespamalloc/src/vespamalloc/util/callstack.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'vespamalloc')

diff --git a/vespamalloc/src/vespamalloc/util/callstack.cpp b/vespamalloc/src/vespamalloc/util/callstack.cpp
index a0645f06815..b8449c89a72 100644
--- a/vespamalloc/src/vespamalloc/util/callstack.cpp
+++ b/vespamalloc/src/vespamalloc/util/callstack.cpp
@@ -53,6 +53,7 @@ const void * StackEntry::_stopAddr = nullptr;
 size_t
 StackEntry::fillStack(StackEntry *stack, size_t nelems)
 {
+    // GNU extension: Variable-length automatic array
     void * retAddr[nelems];
     int sz = backtrace(retAddr, nelems);
     if ((sz > 0) && (size_t(sz) <= nelems)) {
-- 
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