From be02b2e8fd47ca3410ca6046b45f38fcc0e9333b Mon Sep 17 00:00:00 2001
From: Anatol Belski <ab@php.net>
Date: Tue, 18 Sep 2018 10:43:52 +0200
Subject: Add spectre switch for suitable vc14 versions

---
 win32/build/confutils.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/win32/build/confutils.js b/win32/build/confutils.js
index 12e89ca8c7..8b3d081c1c 100644
--- a/win32/build/confutils.js
+++ b/win32/build/confutils.js
@@ -3090,6 +3090,11 @@ function toolset_setup_common_cflags()
 						/* Undocumented. */
 						ADD_FLAG('CFLAGS', "/d2guardspecload");
 					}
+				} else if (1900 == VCVERS) {
+					var subver1900 = probe_binary(PHP_CL).substr(6);
+					if (subver1900 >= 24241) {
+						ADD_FLAG('CFLAGS', "/Qspectre");
+					}
 				}
 			}
 			if (VCVERS >= 1900) {
-- 
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