--- pecl/varnish/trunk/exception.c	2018/06/27 11:47:15	345221
+++ pecl/varnish/trunk/exception.c	2018/06/27 13:34:24	345222
@@ -86,6 +86,7 @@
 	zend_throw_exception_ex(
 		VarnishException_ce,
 		PHP_VARNISH_UNIMPL_EXCEPTION TSRMLS_CC,
+		"%s", 
 		(NULL != msg) ? msg : "The functionality you're trying to use is not available on windows"
 	);  
 }
--- pecl/varnish/trunk/varnish_lib.c	2018/06/27 11:47:15	345221
+++ pecl/varnish/trunk/varnish_lib.c	2018/06/27 13:34:24	345222
@@ -373,6 +373,7 @@
 			zend_throw_exception_ex(
 				VarnishException_ce,
 				PHP_VARNISH_SHM_EXCEPTION TSRMLS_CC,
+				"%s",
 #if HAVE_VARNISHAPILIB >= 40
 				VSM_Error(vsd)
 #else
@@ -394,6 +395,7 @@
 			zend_throw_exception_ex(
 				VarnishException_ce,
 				PHP_VARNISH_SHM_EXCEPTION TSRMLS_CC,
+				"%s",
 #if HAVE_VARNISHAPILIB >= 40
 				VSM_Error(vsd)
 #else