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[flang][runtime] Allow child NAMELIST input to advance records #153963

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Merged
merged 1 commit into from
Aug 18, 2025
Merged

[flang][runtime] Allow child NAMELIST input to advance records #153963

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1 change: 1 addition & 0 deletions flang-rt/include/flang-rt/runtime/io-stmt.h
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Original file line number Diff line number Diff line change
Expand Up @@ -696,6 +696,7 @@ class ChildListIoStatementState : public ChildIoStatementState<DIR>,
RT_API_ATTRS ChildListIoStatementState(
ChildIo &, const char *sourceFile = nullptr, int sourceLine = 0);
using ListDirectedStatementState<DIR>::GetNextDataEdit;
RT_API_ATTRS bool AdvanceRecord(int = 1);
RT_API_ATTRS int EndIoStatement();
};

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20 changes: 17 additions & 3 deletions flang-rt/lib/runtime/io-stmt.cpp
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Expand Up @@ -1095,10 +1095,14 @@ ChildListIoStatementState<DIR>::ChildListIoStatementState(
}

template <Direction DIR>
bool ChildUnformattedIoStatementState<DIR>::Receive(
char *data, std::size_t bytes, std::size_t elementBytes) {
bool ChildListIoStatementState<DIR>::AdvanceRecord(int n) {
#if !defined(RT_DEVICE_AVOID_RECURSION)
return this->child().parent().Receive(data, bytes, elementBytes);
// Allow child NAMELIST input to advance
if (DIR == Direction::Input && this->mutableModes().inNamelist) {
return this->child().parent().AdvanceRecord(n);
} else {
return false;
}
#else
this->ReportUnsupportedChildIo();
#endif
Expand All @@ -1114,6 +1118,16 @@ template <Direction DIR> int ChildListIoStatementState<DIR>::EndIoStatement() {
return ChildIoStatementState<DIR>::EndIoStatement();
}

template <Direction DIR>
bool ChildUnformattedIoStatementState<DIR>::Receive(
char *data, std::size_t bytes, std::size_t elementBytes) {
#if !defined(RT_DEVICE_AVOID_RECURSION)
return this->child().parent().Receive(data, bytes, elementBytes);
#else
this->ReportUnsupportedChildIo();
#endif
}

template class InternalIoStatementState<Direction::Output>;
template class InternalIoStatementState<Direction::Input>;
template class InternalFormattedIoStatementState<Direction::Output>;
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