From 7700e60d61fdadc29144230260a2fcf90d885aa7 Mon Sep 17 00:00:00 2001
From: David Benjamin <davidben@mit.edu>
Date: Sat, 21 Nov 2009 02:09:45 -0500
Subject: [PATCH] Do not restoreState on empty stack

Fixes crash in #24575.

Signed-off-by: David Benjamin <davidben@mit.edu>
---
 poppler/Gfx.cc |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/poppler/Gfx.cc b/poppler/Gfx.cc
index 2a4c9b8..19739f1 100644
--- a/poppler/Gfx.cc
+++ b/poppler/Gfx.cc
@@ -4725,6 +4725,10 @@ void Gfx::saveState() {
 }
 
 void Gfx::restoreState() {
+  if (!state->hasSaves()) {
+    error(-1, "restoreState on an empty state stack");
+    return;
+  }
   state = state->restore();
   out->restoreState(state);
 }
-- 
1.6.3.3