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Read the initial filament start G-code through get_at() (#16080)

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A filament_start_gcode list shorter than the filament count made the Bambu start-of-export path throw std::out_of_range. Use get_at() like the other filament_start_gcode reads, and add a regression test.
This commit is contained in:
HMITCHR
2026-10-12 19:55:02 -05:00
committed by GitHub
parent a379ec4a67
commit 075b03975f
2 changed files with 27 additions and 1 deletions
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tests/fff_print/test_gcodewriter.cpp
+26
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@@ -1748,3 +1748,29 @@ TEST_CASE("Percent accelerations resolve against the option they are a percentag
REQUIRE(accelerations_by_role[role_name] == std::set<int>{ value });
}
}
TEST_CASE("Initial filament start G-code tolerates a list shorter than the filament count", "[GCodeWriter]")
{
// Two filaments but only one filament_start_gcode entry, and the only object prints on
// filament 2, so the BBL export starts on a filament past the end of the list.
DynamicPrintConfig config = multifilament_config(2);
config.set_key_value("filament_start_gcode", new ConfigOptionStrings({"; filament start"}));
Model model;
auto *obj = model.add_object();
obj->add_volume(cube(20));
obj->add_instance();
obj->config.set_key_value("extruder", new ConfigOptionInt(2));
Print print;
print.is_BBL_printer() = true;
arrange_objects_on_test_bed(model, config);
for (auto *mo : model.objects) {
mo->ensure_on_bed();
print.auto_assign_extruders(mo);
}
print.apply(model, config);
print.validate();
REQUIRE_NOTHROW(Slic3r::Test::gcode(print));
}