nixos-option: fix expression position calculation

This was causing null pointer dereferences. Pattern copied from Nix source code.
NixOS · Jul 13, 2023 · 775f683 · 775f683
1 parent ee5e438
commit 775f683
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pkgs/tools/nix/nixos-option/nixos-option.cc b/pkgs/tools/nix/nixos-option/nixos-option.cc
@@ -119,7 +119,7 @@ Out::Out(Out & o, const std::string & start, const std::string & end, LinePolicy
 
 Value evaluateValue(Context & ctx, Value & v)
 {
-    ctx.state.forceValue(v, v.attrs->pos);
+    ctx.state.forceValue(v, [&]() { return v.determinePos(nix::noPos); });
     if (ctx.autoArgs.empty()) {
         return v;
     }