From d1b9393ba5e6dc24d147235c3a78f54bf5ef4a52 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Fri, 20 Jan 1995 16:56:02 +0000
Subject:  support "O&" taking an object constructor  a void*

---
 Python/modsupport.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/Python/modsupport.c b/Python/modsupport.c
index 71bbf6c..518d433 100644
--- a/Python/modsupport.c
+++ b/Python/modsupport.c
@@ -110,6 +110,7 @@ static int countformat(format, endchar)
 			level--;
 			break;
 		case '#':
+		case '&':
 		case ',':
 		case ':':
 		case ' ':
@@ -268,7 +269,7 @@ do_mkvalue(p_format, p_va)
 
 		case 'f':
 		case 'd':
-			return newfloatobject((double)va_arg(*p_va, double));
+			return newfloatobject((double)va_arg(*p_va, va_double));
 
 		case 'c':
 		{
@@ -303,7 +304,14 @@ do_mkvalue(p_format, p_va)
 
 		case 'S':
 		case 'O':
-		{
+		if (**p_format == '&') {
+			typedef object *(*converter)(void *);
+			converter func = va_arg(*p_va, converter);
+			void *arg = va_arg(*p_va, void *);
+			++*p_format;
+			return (*func)(arg);
+		}
+		else {
 			object *v;
 			v = va_arg(*p_va, object *);
 			if (v != NULL)
-- 
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