perf: add test for writing the index

diff --git a/compat/snprintf.c b/compat/snprintf.c
index 42ea1ac110813bbd16e77cfbc36f16e6a5e9ddb2..0b1168853778810d385c84625ad643587537913b 100644 (file)
--- a/compat/snprintf.c
+++ b/compat/snprintf.c
@@ -9,7 +9,7 @@
  * always have room for a trailing NUL byte.
  */
 #ifndef SNPRINTF_SIZE_CORR
-#if defined(WIN32) && (!defined(__GNUC__) || __GNUC__ < 4)
+#if defined(WIN32) && (!defined(__GNUC__) || __GNUC__ < 4) && (!defined(_MSC_VER) || _MSC_VER < 1900)
 #define SNPRINTF_SIZE_CORR 1
 #else
 #define SNPRINTF_SIZE_CORR 0