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fix segfault in ExpressionDelegate in case constraint property is invalidated

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wmayer
2018-10-04 23:34:19 +02:00
parent a0916a9a66
commit 48ec50db38
1 changed files with 3 additions and 1 deletions
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4
src/Mod/Sketcher/Gui/TaskSketcherConstrains.cpp
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@@ -378,7 +378,9 @@ protected:
App::ObjectIdentifier path = item->sketch->Constraints.createPath(item->ConstraintNbr);
App::PropertyExpressionEngine::ExpressionInfo expr_info = item->sketch->getExpression(path);
if (item->sketch->Constraints[item->ConstraintNbr]->isDriving && expr_info.expression) {
// in case the constraint property is invalidated it returns a null pointer
const Sketcher::Constraint* constraint = item->sketch->Constraints[item->ConstraintNbr];
if (constraint && constraint->isDriving && expr_info.expression) {
// Paint pixmap
int s = 2 * options.rect.height() / 4;
int margin = s;