3DPrinting/PrusaSlicer-NonPlainar
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Fixed a crash in a constructor of FullPrintConfig due to an incorrect use

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of virtual inheritance. Note that an invocation of ConfigBase::optptr()
is routed to FullPrintConfig::optptr() for all classes of the FullPrintConfig
hierarchy. FullPrintConfig::optptr() in turn invokes optptr()
of PrintObjectConfig, PrintRegionConfig, PrintConfig and HostConfig.
Due to the use of virtual inheritance, this all happens, when
PrintObjectConfig gets constructed as part of FullPrintConfig, but
at that time PrintRegionConfig, PrintConfig and HostConfig are not
constructed yet. Accessing them at that time leads to crashes,
when compiled with Visual Studio 2013 compiler. For some reason
the code generated by gcc does not crash, but I believe the behavior
is undefined and it is better to be fixed anyway.

The patch solves the problem by calling set_defaults() by the topmost
object, which not only fixes the crashes, but also avoids repeated
initialization.
This commit is contained in:
bubnikv 2016-08-21 19:09:31 +02:00
parent 3e8575c931
commit bd23fe9c44
1 changed files with 30 additions and 15 deletions
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45
xs/src/libslic3r/PrintConfig.hpp
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@ -126,9 +126,10 @@ class PrintObjectConfig : public virtual StaticPrintConfig
ConfigOptionInt support_material_threshold;
ConfigOptionFloat xy_size_compensation;
PrintObjectConfig() : StaticPrintConfig() {
this->set_defaults();
};
PrintObjectConfig(bool initialize = true) : StaticPrintConfig() {
if (initialize)
this->set_defaults();
}
virtual ConfigOption* optptr(const t_config_option_key &opt_key, bool create = false) {
OPT_PTR(dont_support_bridges);
@ -195,9 +196,10 @@ class PrintRegionConfig : public virtual StaticPrintConfig
ConfigOptionInt top_solid_layers;
ConfigOptionFloatOrPercent top_solid_infill_speed;
PrintRegionConfig() : StaticPrintConfig() {
this->set_defaults();
};
PrintRegionConfig(bool initialize = true) : StaticPrintConfig() {
if (initialize)
this->set_defaults();
}
virtual ConfigOption* optptr(const t_config_option_key &opt_key, bool create = false) {
OPT_PTR(bottom_solid_layers);
@ -266,9 +268,10 @@ class GCodeConfig : public virtual StaticPrintConfig
ConfigOptionBool use_relative_e_distances;
ConfigOptionBool use_volumetric_e;
GCodeConfig() : StaticPrintConfig() {
this->set_defaults();
};
GCodeConfig(bool initialize = true) : StaticPrintConfig() {
if (initialize)
this->set_defaults();
}
virtual ConfigOption* optptr(const t_config_option_key &opt_key, bool create = false) {
OPT_PTR(before_layer_gcode);
@ -366,9 +369,10 @@ class PrintConfig : public GCodeConfig
ConfigOptionBools wipe;
ConfigOptionFloat z_offset;
PrintConfig() : GCodeConfig() {
this->set_defaults();
};
PrintConfig(bool initialize = true) : GCodeConfig(false) {
if (initialize)
this->set_defaults();
}
virtual ConfigOption* optptr(const t_config_option_key &opt_key, bool create = false) {
OPT_PTR(avoid_crossing_perimeters);
@ -438,9 +442,10 @@ class HostConfig : public virtual StaticPrintConfig
ConfigOptionString serial_port;
ConfigOptionInt serial_speed;
HostConfig() : StaticPrintConfig() {
this->set_defaults();
};
HostConfig(bool initialize = true) : StaticPrintConfig() {
if (initialize)
this->set_defaults();
}
virtual ConfigOption* optptr(const t_config_option_key &opt_key, bool create = false) {
OPT_PTR(octoprint_host);
@ -456,6 +461,16 @@ class FullPrintConfig
: public PrintObjectConfig, public PrintRegionConfig, public PrintConfig, public HostConfig
{
public:
FullPrintConfig(bool initialize = true) :
PrintObjectConfig(false),
PrintRegionConfig(false),
PrintConfig(false),
HostConfig(false)
{
if (initialize)
this->set_defaults();
}
virtual ConfigOption* optptr(const t_config_option_key &opt_key, bool create = false) {
ConfigOption* opt;
if ((opt = PrintObjectConfig::optptr(opt_key, create)) != NULL) return opt;