From e82917d4e6428fdfc86f10ce63846aea65852540 Mon Sep 17 00:00:00 2001 From: Alex Beregszaszi Date: Wed, 26 Sep 2018 15:39:53 +0100 Subject: Add LLL error when assembly instruction causes stack underflow --- liblll/CodeFragment.cpp | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/liblll/CodeFragment.cpp b/liblll/CodeFragment.cpp index 60dd0917..f37cb8b9 100644 --- a/liblll/CodeFragment.cpp +++ b/liblll/CodeFragment.cpp @@ -236,7 +236,12 @@ void CodeFragment::constructOperation(sp::utree const& _t, CompilerState& _s) int c = 0; for (auto const& i: _t) if (c++) - m_asm.append(CodeFragment(i, _s, m_readFile, true).m_asm); + { + auto fragment = CodeFragment(i, _s, m_readFile, true).m_asm; + if ((m_asm.deposit() + fragment.deposit()) < 0) + error("The assembly instruction resulted in stack underflow"); + m_asm.append(fragment); + } } else if (us == "INCLUDE") { -- cgit v1.2.3