eval.cc: add message to static_assert, message can be omitted w/c++17

NixOS · May 26, 2018 · 93ae90d · 93ae90d
1 parent 14c464b
commit 93ae90d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
@@ -307,7 +307,7 @@ EvalState::EvalState(const Strings & _searchPath, ref<Store> store)
 
  assert(gcInitialised);
 
- static_assert(sizeof(Env) == 16);
+ static_assert(sizeof(Env) == 16, "environment must be 16 bytes");
 
  /* Initialise the Nix expression search path. */
  if (!settings.pureEval) {