From 19d9a87c2f513c6bfddb3c724cb365e878aeb601 Mon Sep 17 00:00:00 2001
From: Sergei Zimmerman <sergei@zimmerman.foo>
Date: Tue, 12 Aug 2025 14:58:01 +0300
Subject: [PATCH] libexpr: Use table.size() instead of unnecessary loop

(cherry picked from commit d8fc55a46e0c09241131097dbf1d6fa09e0a9808)
Upstream-PR: https://github.com/NixOS/nix/pull/13741
Change-Id: I8a11e21ae3bff3a885e13fbab74e1deb162a34cf
---
 lix/libexpr/primops/fromTOML.cc | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/lix/libexpr/primops/fromTOML.cc b/lix/libexpr/primops/fromTOML.cc
index a27604271..c08334003 100644
--- a/lix/libexpr/primops/fromTOML.cc
+++ b/lix/libexpr/primops/fromTOML.cc
@@ -18,14 +18,7 @@ void prim_fromTOML(EvalState & state, Value ** args, Value & val)
         switch (t.type()) {
         case toml::value_t::table: {
             auto table = toml::get<toml::table>(t);
-
-            size_t size = 0;
-            for (auto & i : table) {
-                (void) i;
-                size++;
-            }
-
-            auto attrs = state.ctx.buildBindings(size);
+            auto attrs = state.ctx.buildBindings(table.size());
 
             for (auto & elem : table) {
                 self(attrs.alloc(elem.first), elem.second);