man FcStrCopy (Fonctions bibliothèques) - duplicate a string
NAME
FcStrCopy - duplicate a string
SYNOPSIS
#include <fontconfig.h> FcChar8 * FcStrCopy (const FcChar8 *s);
DESCRIPTION
Allocates memory, copies s and returns the resulting buffer. Yes, this is strdup, but that function isn't available on every platform.
VERSION
Fontconfig version 2.3.2