From ad5537d5c95c1b6690dcbd4dc627172795438fd0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Per=20Nordl=C3=B6w?= <per.nordlow@gmail.com>
Date: Thu, 13 Oct 2016 15:57:05 +0200
Subject: [PATCH] Restrict making of containers to non-infinite ranges

---
 std/container/util.d | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/std/container/util.d b/std/container/util.d
index a3dab9398a1..d9718d26270 100644
--- a/std/container/util.d
+++ b/std/container/util.d
@@ -103,22 +103,33 @@ unittest
 template make(alias Container, Args...)
     if (!is(Container))
 {
-    import std.range : isInputRange;
+    import std.range : isInputRange, isInfinite;
     import std.traits : isDynamicArray;
 
     auto make(Range)(Range range)
-        if (!isDynamicArray!Range && isInputRange!Range)
+        if (!isDynamicArray!Range && isInputRange!Range && !isInfinite!Range)
     {
         import std.range : ElementType;
         return .make!(Container!(ElementType!Range, Args))(range);
     }
 
     auto make(T)(T[] items...)
+        if (!isInfinite!T)
     {
         return .make!(Container!(T, Args))(items);
     }
 }
 
+/// forbid construction from infinite range
+unittest
+{
+    import std.container.array : Array;
+    import std.range : only, repeat;
+    import std.range.primitives : isInfinite;
+    static assert(__traits(compiles, { auto arr = make!Array(only(5)); }));
+    static assert(!__traits(compiles, { auto arr = make!Array(repeat(5)); }));
+}
+
 ///
 unittest
 {