build: clear 5 warning categories across 19 sites (#15628)

src/slic3r/GUI/DeviceCore/DevMapping.cpp

@@ -1,3 +1,5 @@
+#include <limits>
+
 #include <nlohmann/json.hpp>
 #include "DevMapping.h"
 #include "DevFilaSystem.h"
@@ -270,7 +272,7 @@ namespace Slic3r
         std::set<int> picked_tar;
         for (int k = 0; k < distance_map.size(); k++)
         {
-            float min_val = INT_MAX;
+            float min_val = std::numeric_limits<float>::max();
             int picked_src_idx = -1;
             int picked_tar_idx = -1;
             for (int i = 0; i < distance_map.size(); i++)

src/slic3r/GUI/MeshUtils.cpp

@@ -297,7 +297,7 @@ void MeshClipper::recalculate_triangles()
             // it so it lies on our line. This will be the figure to subtract
             // from the cut. The coordinates must not overflow after the transform,
             // make the rectangle a bit smaller.
-            const coord_t size = (std::numeric_limits<coord_t>::max()/2 - scale_(std::max(std::abs(e * a), std::abs(e * b)))) / 4;
+            const coord_t size = (double(std::numeric_limits<coord_t>::max()/2) - scale_(std::max(std::abs(e * a), std::abs(e * b)))) / 4;
             Polygons ep {Polygon({Point(-size, 0), Point(size, 0), Point(size, 2*size), Point(-size, 2*size)})};
             ep.front().rotate(angle);
             ep.front().translate(scale_(-e * a), scale_(-e * b));
@@ -352,7 +352,7 @@ void MeshClipper::recalculate_triangles()
 
             // To prevent overflow after scaling, downscale the input if needed:
             double extra_scale = 1.;
-            coord_t limit = coord_t(std::min(std::numeric_limits<coord_t>::max() / (2. * std::max(1., scale_x)), std::numeric_limits<coord_t>::max() / (2. * std::max(1., scale_y))));
+            coord_t limit = coord_t(std::min(double(std::numeric_limits<coord_t>::max()) / (2. * std::max(1., scale_x)), double(std::numeric_limits<coord_t>::max()) / (2. * std::max(1., scale_y))));
             coord_t max_coord = 0;
             for (const Point& pt : exp.contour)
                 max_coord = std::max(max_coord, std::max(std::abs(pt.x()), std::abs(pt.y())));

src/slic3r/GUI/Printer/PrinterFileSystem.cpp

@@ -1803,7 +1803,7 @@ static void* get_function(const char* name)
         return function;
 
 #if defined(_MSC_VER) || defined(_WIN32)
-    function = GetProcAddress(module, name);
+    function = reinterpret_cast<void*>(GetProcAddress(module, name));
 #else
     function = dlsym(module, name);
 #endif

src/slic3r/Utils/BBLNetworkPlugin.cpp

@@ -349,7 +349,7 @@ void* BBLNetworkPlugin::get_function(const char* name)
         return function;
 
 #if defined(_MSC_VER) || defined(_WIN32)
-    function = GetProcAddress(m_networking_module, name);
+    function = reinterpret_cast<void*>(GetProcAddress(m_networking_module, name));
 #else
     function = dlsym(m_networking_module, name);
 #endif

src/slic3r/Utils/BBLPrinterAgent.cpp

@@ -8,6 +8,7 @@
 #include <nlohmann/json.hpp>
 using json = nlohmann::json;
 
+#include <type_traits>
 #include <unordered_map>
 
 namespace Slic3r {
@@ -90,6 +91,16 @@ OnMessageFn to_orca_messages(OnMessageFn fn)
     return [fn = std::move(fn)](std::string dev_id, std::string msg) { fn(std::move(dev_id), BBLPrinterAgent::to_orca_payload(std::move(msg))); };
 }
 
+// Retypes a plug-in entry point for an older plug-in generation. The detour through the
+// generic function pointer marks the signature change as deliberate, which a direct cast
+// between two signatures does not.
+template <typename To, typename From>
+To as_abi(From fn)
+{
+    static_assert(std::is_function_v<std::remove_pointer_t<From>>, "as_abi retypes a function pointer");
+    return reinterpret_cast<To>(reinterpret_cast<void (*)()>(fn));
+}
+
 } // namespace
 
 std::string BBLPrinterAgent::to_orca_filament_id(const std::string& printer_filament_id) const
@@ -141,7 +152,7 @@ int BBLPrinterAgent::send_message(std::string dev_id, std::string json_str, int
         // series through the legacy form would silently drop MessageFlag sign/encrypt.
         switch (plugin.network_abi()) {
         case NetworkAbi::Legacy: {
-            auto legacy_func = reinterpret_cast<func_send_message_legacy>(func);
+            auto legacy_func = as_abi<func_send_message_legacy>(func);
             return legacy_func(agent, std::move(dev_id), std::move(json_str), qos);
         }
         case NetworkAbi::V0203:
@@ -185,7 +196,7 @@ int BBLPrinterAgent::send_message_to_printer(std::string dev_id, std::string jso
     if (func && agent) {
         switch (plugin.network_abi()) {
         case NetworkAbi::Legacy: {
-            auto legacy_func = reinterpret_cast<func_send_message_to_printer_legacy>(func);
+            auto legacy_func = as_abi<func_send_message_to_printer_legacy>(func);
             return legacy_func(agent, std::move(dev_id), std::move(json_str), qos);
         }
         case NetworkAbi::V0203:
@@ -275,7 +286,7 @@ int BBLPrinterAgent::bind(std::string dev_ip, std::string dev_id, std::string de
         switch (plugin.network_abi()) {
         case NetworkAbi::Legacy:
         case NetworkAbi::V0203: {
-            auto older_func = reinterpret_cast<func_bind_pre0208>(func);
+            auto older_func = as_abi<func_bind_pre0208>(func);
             return older_func(agent, dev_ip, dev_id, sec_link, timezone, improved, update_fn);
         }
         case NetworkAbi::Current:
@@ -436,9 +447,9 @@ int dispatch_start(CurrentFn func, PrintParams& params, const CallbackFns&... ca
     params.ams_mapping_info = BBLPrinterAgent::from_orca_payload(std::move(params.ams_mapping_info));
     switch (plugin.network_abi()) {
     case NetworkAbi::Legacy:
-        return reinterpret_cast<LegacyFn>(func)(agent, BBLNetworkPlugin::as_legacy(params), callbacks...);
+        return as_abi<LegacyFn>(func)(agent, BBLNetworkPlugin::as_legacy(params), callbacks...);
     case NetworkAbi::V0203:
-        return reinterpret_cast<Fn0203>(func)(agent, BBLNetworkPlugin::as_0203(params), callbacks...);
+        return as_abi<Fn0203>(func)(agent, BBLNetworkPlugin::as_0203(params), callbacks...);
     case NetworkAbi::Current:
         return func(agent, std::move(params), callbacks...);
     default:

src/slic3r/Utils/PresetUpdater.cpp

@@ -1620,7 +1620,7 @@ void PresetUpdater::priv::check_new_vendors(const std::set<std::string>& system_
                         Http::get(download_url_str)
                             .timeout_connect(5)
                             .on_progress(check_cancel)
-                            .on_error([&vendor_id, &retry_count, max_retries](std::string body, std::string error, unsigned http_status) {
+                            .on_error([&vendor_id, &retry_count](std::string body, std::string error, unsigned http_status) {
                                 BOOST_LOG_TRIVIAL(warning) << "[Orca Updater] download failed for new vendor " << vendor_id
                                                            << " (attempt " << retry_count << "/" << max_retries << "): " << error;
                             })