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[flang] Enforce C1503 #128962

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Merged
merged 1 commit into from
Feb 27, 2025
Merged

[flang] Enforce C1503 #128962

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8 changes: 8 additions & 0 deletions flang/lib/Semantics/check-declarations.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1496,6 +1496,14 @@ void CheckHelper::CheckSubprogram(
messages_.Say(details.result().name(),
"A function interface may not declare an assumed-length CHARACTER(*) result"_err_en_US);
}
if (symbol.attrs().test(Attr::ABSTRACT) &&
(symbol.name() == "integer" || symbol.name() == "unsigned" ||
symbol.name() == "real" || symbol.name() == "complex" ||
symbol.name() == "character" ||
symbol.name() == "logical")) { // F'2023 C1503
messages_.Say(
"An ABSTRACT interface may not have the same name as an intrinsic type"_err_en_US);
}
}
CheckExternal(symbol);
CheckModuleProcedureDef(symbol);
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6 changes: 6 additions & 0 deletions flang/test/Semantics/abstract02.f90
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Expand Up @@ -4,6 +4,12 @@ program test
abstract interface
subroutine abstract
end subroutine
!ERROR: An ABSTRACT interface may not have the same name as an intrinsic type
function integer()
end
!ERROR: An ABSTRACT interface may not have the same name as an intrinsic type
subroutine logical
end
end interface
procedure(abstract), pointer :: p
!ERROR: Abstract procedure interface 'abstract' may not be referenced
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