Fix detection?

Author: ioquatix

ext/openssl/extconf.rb

@@ -18,8 +18,6 @@
 
 Logging::message "=== OpenSSL for Ruby configurator ===\n"
 
-have_func("rb_io_descriptor")
-
 ##
 # Adds -DOSSL_DEBUG for compilation and some more targets when GCC is used
 # To turn it on, use: --with-debug or --enable-debug
@@ -29,6 +27,7 @@
 end
 $defs.push("-D""OPENSSL_SUPPRESS_DEPRECATED")
 
+have_func("rb_io_descriptor")
 have_func("rb_io_maybe_wait(0, Qnil, Qnil, Qnil)", "ruby/io.h") # Ruby 3.1
 
 Logging::message "=== Checking for system dependent stuff... ===\n"

ext/openssl/ossl_ssl.c

@@ -1655,12 +1655,13 @@ ossl_ssl_initialize(int argc, VALUE *argv, VALUE self)
 
 #ifndef HAVE_RB_IO_DESCRIPTOR
 static int
-rb_io_descriptor(VALUE io)
+io_descriptor_fallback(VALUE io)
 {
     rb_io_t *fptr;
     GetOpenFile(io, fptr);
     return fptr->fd;
 }
+#define rb_io_descriptor io_descriptor_fallback
 #endif
 
 static VALUE