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[flang] Handle DATA-style default component /inits/ in time #159469

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Merged
merged 1 commit into from
Sep 23, 2025
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[flang] Handle DATA-style default component /inits/ in time #159469

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11 changes: 10 additions & 1 deletion flang/lib/Semantics/data-to-inits.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -943,10 +943,19 @@ void ConstructInitializer(const Symbol &symbol,

void ConvertToInitializers(
DataInitializations &inits, evaluate::ExpressionAnalyzer &exprAnalyzer) {
// Process DATA-style component /initializers/ now, so that they appear as
// default values in time for EQUIVALENCE processing in ProcessScopes.
for (auto &[symbolPtr, initialization] : inits) {
if (symbolPtr->owner().IsDerivedType()) {
ConstructInitializer(*symbolPtr, initialization, exprAnalyzer);
}
}
if (ProcessScopes(
exprAnalyzer.context().globalScope(), exprAnalyzer, inits)) {
for (auto &[symbolPtr, initialization] : inits) {
ConstructInitializer(*symbolPtr, initialization, exprAnalyzer);
if (!symbolPtr->owner().IsDerivedType()) {
ConstructInitializer(*symbolPtr, initialization, exprAnalyzer);
}
}
}
}
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16 changes: 16 additions & 0 deletions flang/test/Semantics/data24.f90
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@@ -0,0 +1,16 @@
! RUN: %flang_fc1 -fdebug-dump-symbols %s 2>&1 | FileCheck %s
! Ensure that DATA-style default component /initializers/ are processed
! before they are needed to handle EQUIVALENCE'd storage.
type t
sequence
integer :: j(10) /1,2,3,4,5,6,7,8,9,10/
end type
type(t) :: A
integer arr(10)
equivalence (A, arr)
end

!CHECK: .F18.0, SAVE (CompilerCreated) size=40 offset=0: ObjectEntity type: INTEGER(4) shape: 1_8:10_8 init:[INTEGER(4)::1_4,2_4,3_4,4_4,5_4,6_4,7_4,8_4,9_4,10_4]
!CHECK: a size=40 offset=0: ObjectEntity type: TYPE(t)
!CHECK: arr size=40 offset=0: ObjectEntity type: INTEGER(4) shape: 1_8:10_8
!CHECK: Equivalence Sets: (a,arr(1)) (.F18.0,a)