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Fix crash on printer switch from stale filament/extruder indices (#14103)

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Switching to a printer with fewer filaments (e.g. H2D -> X2D) threw
std::out_of_range in check_filament_printable. Clear stale per-volume
extruder config on count shrink and bound-check filament indices at the
read sites.
This commit is contained in:
SoftFever
2026-06-08 18:57:52 +08:00
committed by GitHub
parent 0d586b28c4
commit 1e1d9cbaf8
4 changed files with 33 additions and 3 deletions
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15
src/slic3r/GUI/PartPlate.cpp
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@@ -1931,11 +1931,20 @@ bool PartPlate::check_filament_printable(const DynamicPrintConfig &config, wxStr
std::vector<int> used_filaments = get_extruders(true); // 1 base
if (!used_filaments.empty()) {
const std::vector<std::string>& filament_types = config.option<ConfigOptionStrings>("filament_type")->values;
const std::vector<int>& filament_printables = config.option<ConfigOptionInts>("filament_printable")->values;
const std::vector<int>& filament_map = get_real_filament_maps(config);
// This runs synchronously mid printer-switch (load_current_preset -> reload_scene), before the
// filament-count reconciliation clears stale per-object assignments, so the plate objects can
// still reference filament indices beyond the freshly selected printer config. Skip those to
// avoid an out-of-range access. Matches BambuStudio's guards in the same function.
const int filament_count = std::min({(int) filament_types.size(), (int) filament_printables.size(), (int) filament_map.size()});
for (auto filament_idx : used_filaments) {
int filament_id = filament_idx - 1;
std::string filament_type = config.option<ConfigOptionStrings>("filament_type")->values.at(filament_id);
int filament_printable_status = config.option<ConfigOptionInts>("filament_printable")->values.at(filament_id);
std::vector<int> filament_map = get_real_filament_maps(config);
if (filament_id < 0 || filament_id >= filament_count)
continue;
std::string filament_type = filament_types[filament_id];
int filament_printable_status = filament_printables[filament_id];
int extruder_idx = filament_map[filament_id] - 1;
if (!(filament_printable_status >> extruder_idx & 1)) {
wxString extruder_name = extruder_idx == 0 ? _L("left") : _L("right");