From 97ea6cf3d6bd9c583c445fe6eeab34f5dc4754c9 Mon Sep 17 00:00:00 2001
From: Danilo Piparo <danilo.piparo@cern.ch>
Date: Tue, 11 Jun 2024 15:22:16 +0200
Subject: [PATCH] [math] Use correct type when invoking the GSLIntegrator

plugin, otherwise heavy checks in the PluginHandler take place that
perform interpreter lookups.

Fixes #15579
---
 math/mathcore/src/Integrator.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/math/mathcore/src/Integrator.cxx b/math/mathcore/src/Integrator.cxx
index e4e2ad5aab1be..cddb9a4ef72a3 100644
--- a/math/mathcore/src/Integrator.cxx
+++ b/math/mathcore/src/Integrator.cxx
@@ -163,7 +163,7 @@ VirtualIntegratorOneDim * IntegratorOneDim::CreateIntegrator(IntegrationOneDim::
          // plugin manager requires a string
          std::string typeName = GetName(type);
 
-         ig = reinterpret_cast<ROOT::Math::VirtualIntegratorOneDim *>( h->ExecPlugin(5,typeName.c_str(), rule, absTol, relTol, size ) );
+         ig = reinterpret_cast<ROOT::Math::VirtualIntegratorOneDim *>( h->ExecPlugin(5,typeName.c_str(), rule, absTol, relTol, (size_t) size ) );
          assert(ig != nullptr);
       }
 #ifdef DEBUG