json-c: cast INT64_MAX to double. from upstream

d0b87ee87b.patch

Subject: [PATCH] Add an explicit cast to double to squash a
 -Wimplicit-int-float-conversion warning. Though we will no longer be
 comparing exactly against INT64_MAX, this is ok because any value of that
 magnitude stored in a double will *also* have been rounded up, so the
 comparison will work appropriately.

devel/json-c/Makefile

@@ -1,8 +1,9 @@
-# $OpenBSD: Makefile,v 1.20 2019/07/12 20:44:36 sthen Exp $
+# $OpenBSD: Makefile,v 1.21 2020/07/31 12:13:28 sthen Exp $
 
 COMMENT=		JSON implementation in C
 
 DISTNAME=		json-c-0.13.1
+REVISION=		0
 CATEGORIES=		devel
 
 SHARED_LIBS=		json-c	1.1	# 4.0

devel/json-c/patches/patch-json_object_c

@@ -0,0 +1,25 @@
+$OpenBSD: patch-json_object_c,v 1.1 2020/07/31 12:13:28 sthen Exp $
+
+From d0b87ee87b282e9b91a1af924050e217b0b2ae8b Mon Sep 17 00:00:00 2001
+From: Eric Haszlakiewicz <erh+git@nimenees.com>
+Date: Mon, 12 Aug 2019 00:30:45 +0000
+Subject: [PATCH] Add an explicit cast to double to squash a
+ -Wimplicit-int-float-conversion warning. Though we will no longer be
+ comparing exactly against INT64_MAX, this is ok because any value of that
+ magnitude stored in a double will *also* have been rounded up, so the
+ comparison will work appropriately.
+
+Index: json_object.c
+--- json_object.c.orig
++++ json_object.c
+@@ -698,7 +698,9 @@ int64_t json_object_get_int64(const struct json_object
+ 	case json_type_int:
+ 		return jso->o.c_int64;
+ 	case json_type_double:
+-		if (jso->o.c_double >= INT64_MAX)
++		// INT64_MAX can't be exactly represented as a double
++		// so cast to tell the compiler it's ok to round up.
++		if (jso->o.c_double >= (double)INT64_MAX)
+ 			return INT64_MAX;
+ 		if (jso->o.c_double <= INT64_MIN)
+ 			return INT64_MIN;