From 677ebac86dc82cb1de96aec421c71af9509d11e0 Mon Sep 17 00:00:00 2001
From: Antoine Pitrou <antoine@python.org>
Date: Thu, 4 Sep 2025 10:51:08 +0200
Subject: [PATCH] GH-47485: [C++][CI] Work around Valgrind failure on Azure
 tests

The Azure tests fail because of a likely bug in the Azure SDK, which tries to deallocate a curl shared handler while it's still in use, and doesn't report deallocation errors (reported upstream at https://github.com/Azure/azure-sdk-for-cpp/issues/6722).

This PR adds a dedicated Valgrind suppression to ignore the corresponding memory leak.
---
 cpp/valgrind.supp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/cpp/valgrind.supp b/cpp/valgrind.supp
index 83e21df83a9e..2289e819e3d9 100644
--- a/cpp/valgrind.supp
+++ b/cpp/valgrind.supp
@@ -75,3 +75,10 @@
     ...
     fun:*gcm_cipher*
 }
+{
+    <Azure>:curl shared handle deallocation fails (GH-47485)
+    Memcheck:Leak
+    fun:calloc
+    fun:curl_share_init
+    fun:*Azure*CurlConnection*
+}