Import Geant4 11.1.1 source tree

source/geometry/solids/Boolean/History

@@ -6,6 +6,10 @@ It must **not** be used as a substitute for writing good git commit messages!
 
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+## 2022-12-20 Ivana Hrivnacova (geom-bool-V11-00-08)
+- Fixed hang-out in G4MultiUnion, caused by oveflow of 'size-1' when 'size' value is zero
+  after changing G4int type to size_t
+
 ## 2022-11-10 Gabriele Cosmo (geom-bool-V11-00-07)
 - Fixed compilation warnings for implicit type conversions on macOS/XCode 14.1.
 

source/geometry/solids/Boolean/src/G4MultiUnion.cc

@@ -480,6 +480,12 @@ EInside G4MultiUnion::InsideWithExclusion(const G4ThreeVector& aPoint,
   // located around will correspond to kInside (cf. G4UnionSolid)
 
   std::size_t size = surfaces.size();
+
+  if (size == 0)
+  {
+    return EInside::kOutside;
+  }
+
   for (std::size_t i = 0; i < size - 1; ++i)
   {
     G4MultiUnionSurface& left = surfaces[i];
@@ -494,9 +500,7 @@ EInside G4MultiUnion::InsideWithExclusion(const G4ThreeVector& aPoint,
     }
   }
 
-  location = size ? EInside::kSurface : EInside::kOutside;
-
-  return location;
+  return EInside::kSurface;
 }
 
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