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[flang] Round derived type byte sizes up to alignment multiple #67571

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Merged
merged 1 commit into from
Oct 17, 2023
Merged

[flang] Round derived type byte sizes up to alignment multiple #67571

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2 changes: 2 additions & 0 deletions flang/lib/Semantics/compute-offsets.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -116,6 +116,8 @@ void ComputeOffsetsHelper::Compute(Scope &scope) {
DoSymbol(*symbol);
}
}
// Ensure that the size is a multiple of the alignment
offset_ = Align(offset_, alignment_);
scope.set_size(offset_);
scope.SetAlignment(alignment_);
// Assign offsets in COMMON blocks, unless this scope is a BLOCK construct,
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10 changes: 8 additions & 2 deletions flang/test/Semantics/offsets02.f90
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Expand Up @@ -8,11 +8,17 @@ subroutine s1
real(8) :: a
real(4) :: b
end type
!CHECK: x1 size=12 offset=0:
!CHECK: y1 size=12 offset=16:
type t2
type(t1) c
real(4) d
end type
!CHECK: x1 size=16 offset=0:
!CHECK: y1 size=16 offset=16:
type(t1) :: x1, y1
!CHECK: z1 size=160 offset=32:
type(t1) :: z1(10)
!CHECK: z2 size=24 offset=192
type(t2) z2
end

! Like t1 but t2 does not need to be aligned on 64-bit boundary
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