From b8f09f773aa6f5133b9f756b872525a0f550ac17 Mon Sep 17 00:00:00 2001
From: Jonathan Marler <johnnymarler@gmail.com>
Date: Sun, 29 Nov 2020 11:30:37 -0700
Subject: [PATCH] fix memory leak in BufMap

---
 lib/std/buf_map.zig | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/std/buf_map.zig b/lib/std/buf_map.zig
index 0fb2156c4..3be724e10 100644
--- a/lib/std/buf_map.zig
+++ b/lib/std/buf_map.zig
@@ -39,6 +39,7 @@ pub const BufMap = struct {
         const get_or_put = try self.hash_map.getOrPut(key);
         if (get_or_put.found_existing) {
             self.free(get_or_put.entry.key);
+            self.free(get_or_put.entry.value);
             get_or_put.entry.key = key;
         }
         get_or_put.entry.value = value;
@@ -88,7 +89,8 @@ pub const BufMap = struct {
 };
 
 test "BufMap" {
-    var bufmap = BufMap.init(std.testing.allocator);
+    const allocator = std.testing.allocator;
+    var bufmap = BufMap.init(allocator);
     defer bufmap.deinit();
 
     try bufmap.set("x", "1");
@@ -105,4 +107,7 @@ test "BufMap" {
 
     bufmap.delete("x");
     testing.expect(0 == bufmap.count());
+
+    try bufmap.setMove(try allocator.dupe(u8, "k"), try allocator.dupe(u8, "v1"));
+    try bufmap.setMove(try allocator.dupe(u8, "k"), try allocator.dupe(u8, "v2"));
 }