From 595f70f0703156e6abb61f66af1716a36d832ced Mon Sep 17 00:00:00 2001
From: orbitcowboy <orbitcowboy@web.de>
Date: Sat, 12 Oct 2024 01:18:20 +0200
Subject: [PATCH] gnu.cfg: Improved configuration of backtrace()

---
 cfg/gnu.cfg    |  1 +
 test/cfg/gnu.c | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/cfg/gnu.cfg b/cfg/gnu.cfg
index ed9b886a539..147518ef128 100644
--- a/cfg/gnu.cfg
+++ b/cfg/gnu.cfg
@@ -709,6 +709,7 @@
   <function name="backtrace">
     <returnValue type="int"/>
     <noreturn>false</noreturn>
+    <leak-ignore/>
     <arg nr="1" direction="out">
       <not-null/>
       <minsize type="argvalue" arg="2"/>
diff --git a/test/cfg/gnu.c b/test/cfg/gnu.c
index c0c279dee8d..1559c2a8e40 100644
--- a/test/cfg/gnu.c
+++ b/test/cfg/gnu.c
@@ -23,6 +23,7 @@
 #include <sys/mman.h>
 #include <sys/sem.h>
 #include <wchar.h>
+#include <execinfo.h>
 #if !defined(__CYGWIN__) && !defined(__APPLE__)
 #include <sys/epoll.h>
 #endif
@@ -47,6 +48,15 @@ void unreachableCode_error(void) // #11197
 }
 #endif
 
+
+int deallocuse_backtrace(int size) {
+    void **buffer = (void **)malloc(sizeof(void *) * size);
+    free(buffer);
+    // cppcheck-suppress deallocuse
+    int numEntries = backtrace(buffer, size);
+    return numEntries;
+}
+
 void leakReturnValNotUsed_get_current_dir_name(void)
 {
     // cppcheck-suppress leakReturnValNotUsed