The makeSubstitution method in the ExternalNamespaceImpl class substitutes the template argument corresponding to a reference that matches a template parameter. However, if a match is found, the loop is not exited. This can cause a null pointer exception on the next loop iteration if there is actually no template argument for the matched template parameter.
seidewitz
commented
5 years ago
The
makeSubstitutionmethod in theExternalNamespaceImplclass substitutes the template argument corresponding to a reference that matches a template parameter. However, if a match is found, the loop is not exited. This can cause a null pointer exception on the next loop iteration if there is actually no template argument for the matched template parameter.