From b2b9444b6e03d62d97d905dba27189fb9bd6df43 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luk=C3=A1=C5=A1=20Hejl?= <hejl.lukas@gmail.com>
Date: Thu, 15 Sep 2022 08:59:11 +0200
Subject: [PATCH] Fix of #8827: Parsing error in the pressure equalizer when
 tag TIMELAPSE_TAKE_FRAME was inside G-code.

---
 src/libslic3r/GCode/PressureEqualizer.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/libslic3r/GCode/PressureEqualizer.cpp b/src/libslic3r/GCode/PressureEqualizer.cpp
index c8a9618efe..399ab42726 100644
--- a/src/libslic3r/GCode/PressureEqualizer.cpp
+++ b/src/libslic3r/GCode/PressureEqualizer.cpp
@@ -367,7 +367,16 @@ bool PressureEqualizer::process_line(const char *line, const char *line_end, GCo
     case 'T':
     {
         // Activate an extruder head.
-        int new_extruder = parse_int(line);
+        int new_extruder = -1;
+        try {
+            new_extruder = parse_int(line);
+        } catch (Slic3r::InvalidArgument &) {
+            // Ignore invalid GCodes starting with T.
+            eatws(line);
+            break;
+        }
+        assert(new_extruder != -1);
+
         if (new_extruder != int(m_current_extruder)) {
             m_current_extruder = new_extruder;
             m_retracted = true;