In file included from /occt.git/wasm-make/inc\NCollection_BaseList.hxx:1:
/occt.git/src/NCollection/NCollection_BaseList.hxx:70:15: warning: definition of implicit copy constructor for 'Iterator' is deprecated because it has a user-declared copy assignment operator [-Wdeprecated-copy]
    Iterator& operator= (const Iterator& theIt)
              ^
/occt.git/src/NCollection/NCollection_TListIterator.hxx:27:36: note: in implicit copy constructor for 'NCollection_BaseList::Iterator' first required here
template <class TheItemType> class NCollection_TListIterator 
                                   ^
/occt.git/src/V3d/V3d_Viewer.hxx:244:62: note: in implicit move constructor for 'NCollection_TListIterator<opencascade::handle<V3d_View>>' first required here
  V3d_ListOfViewIterator ActiveViewIterator() const { return V3d_ListOfViewIterator (myActiveViews); }
                                                             ^
/occt.git\src\LDOM\LDOM_CharReference.cxx:38:8: warning: definition of implicit copy constructor for 'entityRef' is deprecated because it has a user-declared copy assignment operator [-Wdeprecated-copy]
  void operator= (const entityRef&);
       ^
/occt.git\src\LDOM\LDOM_CharReference.cxx:139:5: note: in implicit copy constructor for 'entityRef' first required here
    entityRef(NULL,     0),
    ^
1 warning generated.
/occt.git\src\ShapeAnalysis\ShapeAnalysis_Geom.cxx:140:5: warning: misleading indentation; statement is not part of the previous 'for' [-Wmisleading-indentation]
    gp_XYZ v1 ( gtrsf.Value(1,1), gtrsf.Value(2,1), gtrsf.Value(3,1) );
    ^
/occt.git\src\ShapeAnalysis\ShapeAnalysis_Geom.cxx:130:3: note: previous statement is here
  for (Standard_Integer i = 1; i <= 3; i ++)
  ^
1 warning generated.
/occt.git\src\CSLib\CSLib.cxx:540:5: warning: misleading indentation; statement is not part of the previous 'for' [-Wmisleading-indentation]
    return DerVecNor.Value(Nu,Nv);
    ^
/occt.git\src\CSLib\CSLib.cxx:455:1: note: previous statement is here
for ( Mderiv = 1;Mderiv <= Kderiv; Mderiv++)
^
1 warning generated.
/occt.git\src\SelectMgr\SelectMgr_ViewerSelector.cxx:55:10: warning: definition of implicit copy constructor for 'CompareResults' is deprecated because it has a user-declared copy assignment operator [-Wdeprecated-copy]
    void operator = (const CompareResults&);
         ^
/occt.git\src\SelectMgr\SelectMgr_ViewerSelector.cxx:910:56: note: in implicit copy constructor for '(anonymous namespace)::CompareResults' first required here
  std::sort (anIndexArray.begin(), anIndexArray.end(), CompareResults (mystored));
                                                       ^
1 warning generated.
/occt.git\src\AppDef\AppDef_LinearCriteria.cxx:366:5: warning: misleading indentation; statement is not part of the previous 'for' [-Wmisleading-indentation]
    if (ValCri[0] > myEstimation[0] * 2) {
    ^
/occt.git\src\AppDef\AppDef_LinearCriteria.cxx:355:3: note: previous statement is here
  for(i = 0; i <= 2; i++)
  ^
1 warning generated.
/occt.git\src\MoniTool\MoniTool_TypedValue.cxx:449:5: warning: misleading indentation; statement is not part of the previous 'if' [-Wmisleading-indentation]
    theeadds.Bind (val,num);
    ^
/occt.git\src\MoniTool\MoniTool_TypedValue.cxx:445:3: note: previous statement is here
  if (theenums->Value(num).Length() == 0)
  ^

...

clang++ --version
clang version 11.0.0 (Cswircachegitchromium.googlesource.com-external-github.com-llvm-llvm--project 7bf299c8d8d59304fb821f8811618cdeb1d1f1fd)
Target: x86_64-pc-windows-msvc
Thread model: posix