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[flang] Catch deferred type parameters in ALLOCATE(type-spec::) #139334

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Merged
merged 1 commit into from
May 12, 2025
Merged

[flang] Catch deferred type parameters in ALLOCATE(type-spec::) #139334

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10 changes: 8 additions & 2 deletions 10 flang/lib/Semantics/check-allocate.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -116,13 +116,19 @@ static std::optional<AllocateCheckerInfo> CheckAllocateOptions(
// C937
if (auto it{FindCoarrayUltimateComponent(*derived)}) {
context
.Say("Type-spec in ALLOCATE must not specify a type with a coarray"
" ultimate component"_err_en_US)
.Say(
"Type-spec in ALLOCATE must not specify a type with a coarray ultimate component"_err_en_US)
.Attach(it->name(),
"Type '%s' has coarray ultimate component '%s' declared here"_en_US,
info.typeSpec->AsFortran(), it.BuildResultDesignatorName());
}
}
if (auto dyType{evaluate::DynamicType::From(*info.typeSpec)}) {
if (dyType->HasDeferredTypeParameter()) {
context.Say(
"Type-spec in ALLOCATE must not have a deferred type parameter"_err_en_US);
}
}
}

const parser::Expr *parserSourceExpr{nullptr};
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4 changes: 4 additions & 0 deletions 4 flang/test/Semantics/allocate01.f90
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Expand Up @@ -62,6 +62,7 @@ subroutine bar()
real, pointer, save :: okp3
real, allocatable, save :: oka3, okac4[:,:]
real, allocatable :: okacd5(:, :)[:]
character(:), allocatable :: chvar

!ERROR: Name in ALLOCATE statement must be a variable name
allocate(foo)
Expand Down Expand Up @@ -102,6 +103,8 @@ subroutine bar()
allocate(edc9%nok)
!ERROR: Entity in ALLOCATE statement must have the ALLOCATABLE or POINTER attribute
allocate(edc10)
!ERROR: Type-spec in ALLOCATE must not have a deferred type parameter
allocate(character(:) :: chvar)

! No errors expected below:
allocate(a_var)
Expand All @@ -117,4 +120,5 @@ subroutine bar()
allocate(edc9%ok(4))
allocate(edc10%ok)
allocate(rp)
allocate(character(123) :: chvar)
end subroutine
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