From b2a1a849f84c202618c4f463da5b008085f6cebf Mon Sep 17 00:00:00 2001
From: Nathan Sashihara <21227491+n8sh@users.noreply.github.com>
Date: Fri, 19 Apr 2019 09:34:30 -0400
Subject: [PATCH] Ensure getAndPopFront/getAndPopBack don't promote `system` to
 `safe`

---
 source/tanya/range/primitive.d | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/source/tanya/range/primitive.d b/source/tanya/range/primitive.d
index 258d5d5..c4cb54a 100644
--- a/source/tanya/range/primitive.d
+++ b/source/tanya/range/primitive.d
@@ -1566,6 +1566,12 @@ in (!range.empty)
 {
     static if (hasLvalueElements!R)
     {
+        if (false)
+        {
+            // This code is removed by the compiler but ensures that
+            // this function isn't @safe if range.front isn't @safe.
+            auto _ = range.front();
+        }
         auto el = (() @trusted => &range.front())();
     }
     else
@@ -1613,6 +1619,12 @@ in (!range.empty)
 {
     static if (hasLvalueElements!R)
     {
+        if (false)
+        {
+            // This code is removed by the compiler but ensures that
+            // this function isn't @safe if range.back isn't @safe.
+            auto _ = range.back();
+        }
         auto el = (() @trusted => &range.back())();
     }
     else