Fix NIX_COUNT_CALLS=1

Also, make the JSON writer support std::string_view.

Fixes #6857.

1 files changed, 6 insertions, 6 deletions

diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
index f485e2fed..e3716f217 100644
--- a/src/libexpr/eval.cc
+++ b/src/libexpr/eval.cc
@@ -2501,18 +2501,18 @@ void EvalState::printStats()
             }
             {
                 auto list = topObj.list("functions");
-                for (auto & i : functionCalls) {
+                for (auto & [fun, count] : functionCalls) {
                     auto obj = list.object();
-                    if (i.first->name)
-                        obj.attr("name", (const std::string &) i.first->name);
+                    if (fun->name)
+                        obj.attr("name", (std::string_view) symbols[fun->name]);
                     else
                         obj.attr("name", nullptr);
-                    if (auto pos = positions[i.first->pos]) {
-                        obj.attr("file", (const std::string &) pos.file);
+                    if (auto pos = positions[fun->pos]) {
+                        obj.attr("file", (std::string_view) pos.file);
                         obj.attr("line", pos.line);
                         obj.attr("column", pos.column);
                     }
-                    obj.attr("count", i.second);
+                    obj.attr("count", count);
                 }
             }
             {