From: fennecdjay <astor.jeremie@wanadoo.fr>
Date: Sat, 8 Jun 2019 09:27:16 +0000 (+0200)
Subject: :art: Variadic security
X-Git-Tag: nightly~2443^2~13
X-Git-Url: http://10.10.0.4:5575/?a=commitdiff_plain;h=ae32384a1544a332a26580489476e30f8977f1f2;p=gwion.git

:art: Variadic security
---

diff --git a/src/emit/emit.c b/src/emit/emit.c
index 6683d9e7..6f7d6aac 100644
--- a/src/emit/emit.c
+++ b/src/emit/emit.c
@@ -1570,6 +1570,10 @@ ANN static m_bool emit_vararg(const Emitter emit, const Exp_Dot* member) {
     emit_vararg_end(emit, offset);
     return GW_OK;
   }
+  if(!get_variadic(emit))
+      ERR_B(exp_self(member)->pos, "vararg.%s used before vararg.start. this is an error", s_name(member->xid))
+  if(GET_FLAG(emit->env->func, empty))
+    ERR_B(exp_self(member)->pos, "vararg.%s used after vararg.end. this is an error", s_name(member->xid))
   const Instr instr = emit_add_instr(emit, VarargMember);
   instr->m_val = offset;
   instr->m_val2 = exp_self(member)->type->size;