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Try to work around an Intel compiler issue. #15390

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Jun 21, 2023
Merged

Try to work around an Intel compiler issue. #15390

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f86ac42
Try to work around an Intel compiler issue.
bangerth Jun 20, 2023
8e8d4df
Work around an Intel18 compiler issue.
marcfehling Jun 20, 2023
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14 changes: 9 additions & 5 deletions source/dofs/dof_handler_policy.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -3529,14 +3529,18 @@ namespace internal
cell->active_fe_index(),
DoFAccessorImplementation::Implementation::
DoFIndexProcessor<dim, spacedim>(),
[&complete](auto &stored_index, auto received_index) {
if (*received_index != numbers::invalid_dof_index)

// Intel ICC 19 and earlier for some reason believe that
// numbers::invalid_dof_index is not a valid object
// inside the lambda function. Fix this by creating a
// local variable initialized by the global one.
[&complete, invalid_dof_index = numbers::invalid_dof_index](
auto &stored_index, const auto received_index) {
if (*received_index != invalid_dof_index)
{
# if !defined(__INTEL_COMPILER) || __INTEL_COMPILER >= 1900
Assert((stored_index == (numbers::invalid_dof_index)) ||
Assert((stored_index == (invalid_dof_index)) ||
(stored_index == *received_index),
ExcInternalError());
# endif
stored_index = *received_index;
}
else
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