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[flang] Fixed a crash with undeclared variable in implicit-do loop #149513

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Merged
merged 9 commits into from
Jul 18, 2025
Merged

[flang] Fixed a crash with undeclared variable in implicit-do loop #149513

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a155a35
[flang] Control alignment of constant folded reals
eugeneepshteyn Jul 17, 2025
43102f9
Added comment
eugeneepshteyn Jul 17, 2025
5df6817
Merge branch 'llvm:main' into fold-real-align
eugeneepshteyn Jul 17, 2025
26432b5
Comment update
eugeneepshteyn Jul 17, 2025
270cdfc
[flang]
eugeneepshteyn Jul 18, 2025
fc450bc
Actual fix
eugeneepshteyn Jul 18, 2025
95dd942
Added test
eugeneepshteyn Jul 18, 2025
38133c4
Restored the files accidentally grabbed from another branch
eugeneepshteyn Jul 18, 2025
8a0cac8
Undo unnecessary change
eugeneepshteyn Jul 18, 2025
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4 changes: 3 additions & 1 deletion flang/lib/Semantics/check-do-forall.cpp
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Expand Up @@ -1180,7 +1180,9 @@ void DoForallChecker::Leave(const parser::IoControlSpec &ioControlSpec) {
void DoForallChecker::Leave(const parser::OutputImpliedDo &outputImpliedDo) {
const auto &control{std::get<parser::IoImpliedDoControl>(outputImpliedDo.t)};
const parser::Name &name{control.name.thing.thing};
context_.CheckIndexVarRedefine(name.source, *name.symbol);
if (name.symbol) {
context_.CheckIndexVarRedefine(name.source, *name.symbol);
}
}

void DoForallChecker::Leave(const parser::StatVariable &statVariable) {
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7 changes: 7 additions & 0 deletions flang/test/Semantics/resolve40.f90
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Expand Up @@ -96,3 +96,10 @@ subroutine s12(x)
!BECAUSE: 'x' is an INTENT(IN) dummy argument
read(*,nml=nl)
end

subroutine s13()
implicit none
!ERROR: No explicit type declared for 'i'
!ERROR: No explicit type declared for 'i'
print *, (i, i = 1, 2)
end