Bug#1110676: slic3r ftbfs with boost 1.88

[Gregor Riepl]

Tags: patch

I tested the patch posted in the upstream bug tracker, and can confirm that it 
works.
A version that applies against 1.3.0+dfsg1-5.1 is attached.
The patch also works with boost 1.83, no changes for current unstable are 
needed.

Please include it in the next upload.
--- a/xs/src/libslic3r/GCodeSender.cpp
+++ b/xs/src/libslic3r/GCodeSender.cpp
@@ -98,12 +98,12 @@
     fs.open("serial.txt", std::fstream::out | std::fstream::trunc);
 #endif
     
-    // this gives some work to the io_service before it is started
+    // this gives some work to the io_context before it is started
     // (post() runs the supplied function in its thread)
-    this->io.post(boost::bind(&GCodeSender::do_read, this));
+    boost::asio::post(this->io, [this]() { this->do_read(); });
     
     // start reading in the background thread
-    boost::thread t(boost::bind(&asio::io_service::run, &this->io));
+    boost::thread t(boost::bind(&asio::io_context::run, &this->io));
     this->background_thread.swap(t);
     
     // always send a M105 to check for connection because firmware might be silent on connect 
@@ -158,9 +158,9 @@
     if (!this->open) return;
     this->open = false;
     this->connected = false;
-    this->io.post(boost::bind(&GCodeSender::do_close, this));
+    boost::asio::post(this->io, [this]() { this->do_read(); });
     this->background_thread.join();
-    this->io.reset();
+    this->io.restart();
     /*
     if (this->error_status()) {
         throw(boost::system::system_error(boost::system::error_code(),
@@ -443,7 +443,7 @@
 void
 GCodeSender::send()
 {
-    this->io.post(boost::bind(&GCodeSender::do_send, this));
+    boost::asio::post(this->io, [this]() { this->do_send(); });
 }
 
 void
--- a/xs/src/libslic3r/GCodeSender.hpp
+++ b/xs/src/libslic3r/GCodeSender.hpp
@@ -37,7 +37,7 @@
     void reset();
     
     private:
-    asio::io_service io;
+    asio::io_context io;
     asio::serial_port serial;
     boost::thread background_thread;
     boost::asio::streambuf read_buffer, write_buffer;