From 38bb0c74ae1527a7eb8ebb8980e2aca0c22576b8 Mon Sep 17 00:00:00 2001
From: Sainan <sainan@calamity.gg>
Date: Wed, 19 Jul 2023 22:47:14 +0200
Subject: [PATCH] Revert

---
 src/llex.h        |  1 -
 src/lparser.cpp   | 12 ++----------
 tests/basic.pluto | 25 +++++++++++++++++++++++++
 3 files changed, 27 insertions(+), 11 deletions(-)

diff --git a/src/llex.h b/src/llex.h
index ce3aed7ea1..cbb0515ca3 100644
--- a/src/llex.h
+++ b/src/llex.h
@@ -319,7 +319,6 @@ struct LexState {
   std::vector<EnumDesc> enums{};
   std::vector<TString*> export_symbols{};
   std::vector<void*> parse_time_allocations{};
-  bool should_have_extends = false;
 
   LexState()
     : lines{ std::string{} }, warnconfs{ WarningConfig(0) }
diff --git a/src/lparser.cpp b/src/lparser.cpp
index df633c0d8b..124c6949d4 100644
--- a/src/lparser.cpp
+++ b/src/lparser.cpp
@@ -1018,13 +1018,6 @@ static void leaveblock (FuncState *fs) {
   }
   luaK_patchtohere(fs, bl->breaklist);
   ls->laststat.token = TK_EOS;  /* Prevent unreachable code warnings on blocks that don't explicitly check for TK_END. */
-
-  if (ls->should_have_extends && bl->nactvar != 0) {
-    expdesc f;
-    singlevaraux(fs, luaS_newliteral(ls->L, "Pluto_operator_extends"), &f, 1);
-    if (f.k == VVOID)
-      luaX_syntaxerror(ls, "what the fuck?");
-  }
 }
 
 
@@ -1528,7 +1521,8 @@ static void applyextends (LexState *ls, expdesc *v, TString *parent, int line) {
 
   expdesc f;
   singlevaraux(fs, luaS_newliteral(ls->L, "Pluto_operator_extends"), &f, 1);
-  lua_assert(f.k != VVOID);
+  if (f.k == VVOID)
+    luaX_syntaxerror(ls, "what the fuck?");
   luaK_exp2nextreg(fs, &f);
 
   expdesc args = *v;
@@ -4631,9 +4625,7 @@ static void mainfunc (LexState *ls, FuncState *fs) {
   luaC_objbarrier(ls->L, fs->f, env->name);
   builtinoperators(ls);
   luaX_next(ls);  /* read first token */
-  ls->should_have_extends = true;
   const bool ret = statlist(ls);  /* parse main body */
-  ls->should_have_extends = false;
   check(ls, TK_EOS);
   if (!ls->export_symbols.empty()) {
     if (ret) {
diff --git a/tests/basic.pluto b/tests/basic.pluto
index 3e0e7f8c17..1e92be6f28 100644
--- a/tests/basic.pluto
+++ b/tests/basic.pluto
@@ -1260,6 +1260,31 @@ do
     class Human end
 end
 
+print "Testing compile-time conditionals."
+do
+    local debug_bytecode = string.dump(load([[
+        local DEBUG <constexpr> = true
+        $if DEBUG then
+            print("Script running in debug mode")
+        $else
+            print("Script running in release mode")
+        $end
+    ]], ""))
+    local release_bytecode = string.dump(load([[
+        local DEBUG <constexpr> = false
+        $if DEBUG then
+            print("Script running in debug mode")
+        $else
+            print("Script running in release mode")
+        $end
+    ]], ""))
+
+    assert(debug_bytecode:find("Script running in debug mode") ~= nil)
+    assert(debug_bytecode:find("Script running in release mode") == nil)
+    assert(release_bytecode:find("Script running in debug mode") == nil)
+    assert(release_bytecode:find("Script running in release mode") ~= nil)
+end
+
 print "Testing compatibility."
 do
     local a = "Hi"