diff --git a/legacy/evil/ChangeLog b/legacy/evil/ChangeLog
index 2610aa8ec6..cc31972005 100644
--- a/legacy/evil/ChangeLog
+++ b/legacy/evil/ChangeLog
@@ -1,3 +1,9 @@
+2010-04-14  Vincent Torri  <doursse at users dot sf dot net>
+
+	* src/lib/evil_stdio.c:
+	* src/lib/evil_stdio.h:
+	add vasprintf() function
+
 2010-04-03  Vincent Torri  <doursse at users dot sf dot net>
 
 	* src/lib/Evil.h:
diff --git a/legacy/evil/src/lib/evil_stdio.c b/legacy/evil/src/lib/evil_stdio.c
index 3e3aab8678..d859f52c40 100644
--- a/legacy/evil/src/lib/evil_stdio.c
+++ b/legacy/evil/src/lib/evil_stdio.c
@@ -214,3 +214,21 @@ int evil_fclose_native(FILE *stream)
 }
 
 #endif /* _WIN32_WCE */
+
+#ifdef _MSC_VER
+
+int
+vasprintf(char **strp, const char *fmt, va_list ap)
+{
+   char *res;
+   int len;
+
+   len = _vsnprintf(NULL, 0, fmt, ap) + 1;
+   res = (char *)malloc(len);
+   if (!res) return -1;
+
+   *strp = res;
+   return vsprintf(res, fmt, ap);
+}
+
+#endif /* _MSC_VER */
diff --git a/legacy/evil/src/lib/evil_stdio.h b/legacy/evil/src/lib/evil_stdio.h
index f56f85facd..626caac464 100644
--- a/legacy/evil/src/lib/evil_stdio.h
+++ b/legacy/evil/src/lib/evil_stdio.h
@@ -52,6 +52,12 @@ EAPI int evil_fclose_native(FILE *stream);
 
 #endif /* _WIN32_WCE */
 
+#ifdef _MSC_VER
+
+EAPI int vasprintf(char **strp, const char *fmt, va_list ap);
+
+#endif /* _MSC_VER */
+
 
 /**
  * @}