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[flang] Silence bogus error message #111057

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Merged
merged 1 commit into from
Oct 7, 2024
Merged

[flang] Silence bogus error message #111057

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4 changes: 3 additions & 1 deletion flang/lib/Semantics/tools.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1649,7 +1649,9 @@ bool HasDefinedIo(common::DefinedIo which, const DerivedTypeSpec &derived,
}
}
}
return false;
// Check for inherited defined I/O
const auto *parentType{derived.typeSymbol().GetParentTypeSpec()};
return parentType && HasDefinedIo(which, *parentType, scope);
}

void WarnOnDeferredLengthCharacterScalar(SemanticsContext &context,
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11 changes: 5 additions & 6 deletions flang/test/Semantics/io14.f90
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Expand Up @@ -9,6 +9,8 @@ module m
procedure :: fwrite
generic :: write(formatted) => fwrite
end type
type, extends(t) :: t2
end type
contains
subroutine fwrite(x, unit, iotype, vlist, iostat, iomsg)
class(t), intent(in) :: x
Expand All @@ -19,19 +21,16 @@ subroutine fwrite(x, unit, iotype, vlist, iostat, iomsg)
character(*), intent(in out) :: iomsg
write(unit, *, iostat=iostat, iomsg=iomsg) '(', iotype, ':', vlist, ':', x%n, ')'
end subroutine
subroutine subr(x, y, z)
subroutine subr(x, y, z, w)
class(t), intent(in) :: x
class(base), intent(in) :: y
class(*), intent(in) :: z
class(t2), intent(in) :: w
print *, x ! ok
print *, w ! ok
!ERROR: Derived type 'base' in I/O may not be polymorphic unless using defined I/O
print *, y
!ERROR: I/O list item may not be unlimited polymorphic
print *, z
end subroutine
end

program main
use m
call subr(t(123),t(234),t(345))
end
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