From 6b18e204cd5293d7d2715e490921eab4d2a4bc47 Mon Sep 17 00:00:00 2001
From: Piotr Likoski <likoski@codingworkshop.eu.org>
Date: Tue, 16 Apr 2019 20:15:38 +0200
Subject: [PATCH] Always pop the l-value on variable declaration. Otherwise, it
 might lead to unexpected behaviour including protected memory access and
 segmentation fault. This finally fixes #49.

---
 engine/compiler.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/engine/compiler.c b/engine/compiler.c
index 5827b7d..598e2b8 100644
--- a/engine/compiler.c
+++ b/engine/compiler.c
@@ -2555,6 +2555,8 @@ static sxi32 PH7_CompileVar(ph7_gen_state *pGen) {
 			void *p3 = (void *) zDup;
 			/* Emit OP_DECLARE instruction */
 			PH7_VmEmitInstr(pGen->pVm, pGen->pIn->nLine, PH7_OP_DECLARE, 0, nType, p3, 0);
+			/* Pop the l-value */
+			PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_POP, 1, 0, 0, 0);
 			/* Check if we have an expression to compile */
 			if(pGen->pIn < pGen->pEnd && (pGen->pIn[2].nType & PH7_TK_EQUAL)) {
 				/* Compile the expression */