From 7a1e6aa84ba857d2e3cdc6e5fd50e3bda210c164 Mon Sep 17 00:00:00 2001
From: Esun Kim <veblush@google.com>
Date: Tue, 30 Jul 2019 15:43:50 -0700
Subject: Support MSVC prior to 2015

---
 upb/port_def.inc | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'upb/port_def.inc')

diff --git a/upb/port_def.inc b/upb/port_def.inc
index 05c4ebc..0650920 100644
--- a/upb/port_def.inc
+++ b/upb/port_def.inc
@@ -76,8 +76,11 @@
 #include <stdarg.h>
 #include <stdio.h>
 #if defined(_MSC_VER) && _MSC_VER < 1900
-#define _upb_snprintf _snprintf
-#define _upb_vsnprintf _vsnprintf
+int msvc_vsnprintf(char* s, size_t n, const char* format, va_list arg);
+int msvc_snprintf(char* s, size_t n, const char* format, ...);
+#define UPB_MSVC_VSNPRINTF
+#define _upb_snprintf msvc_snprintf
+#define _upb_vsnprintf msvc_vsnprintf
 #else
 #define _upb_snprintf snprintf
 #define _upb_vsnprintf vsnprintf
@@ -135,3 +138,11 @@
 #else
 #define UPB_UNREACHABLE() do { assert(0); } while(0)
 #endif
+
+/* UPB_INFINITY representing floating-point positive infinity. */
+#include <math.h>
+#ifdef INFINITY
+#define UPB_INFINITY INFINITY
+#else
+#define UPB_INFINITY (1.0 / 0.0)
+#endif
-- 
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