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This PR is a follow-up to #128655. It adds another test to ensure deterministic ordering in `.mod` files and includes related changes to prevent non-deterministic ordering caused by iterating over a set ordered by heap pointers. This issue is particularly noticeable when using Flang as a library and compiling the same files multiple times. The reduced test case is as minimal as possible. We were unable to reproduce the issue with a smaller set of files.
54 lines
1.2 KiB
Fortran
54 lines
1.2 KiB
Fortran
! This test verifies that both invocations produce a consistent order in the
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! generated `.mod` file. Previous versions of Flang exhibited non-deterministic
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! behavior due to iterating over a set ordered by heap pointers. This issue was
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! particularly noticeable when using Flang as a library.
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! RUN: rm -rf %t && mkdir -p %t
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! RUN: %flang_fc1 \
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! RUN: -fsyntax-only \
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! RUN: -J%t \
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! RUN: %S/Inputs/modfile73-a.f90 \
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! RUN: %S/Inputs/modfile73-b.f90 \
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! RUN: %S/Inputs/modfile73-c.f90
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! RUN: %flang_fc1 -fsyntax-only -J%t %s
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! RUN: cat %t/modfile73.mod | FileCheck %s
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! RUN: rm -rf %t && mkdir -p %t
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! RUN: %flang_fc1 \
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! RUN: -fsyntax-only \
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! RUN: -J%t \
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! RUN: %S/Inputs/modfile73-a.f90 \
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! RUN: %S/Inputs/modfile73-b.f90 \
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! RUN: %S/Inputs/modfile73-c.f90 \
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! RUN: %s
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! RUN: cat %t/modfile73.mod | FileCheck %s
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use modfile73ba
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end
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module modfile73
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use modfile73bb
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use modfile73c
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CONTAINS
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subroutine init_
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end
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subroutine delete_
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end
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subroutine assign_
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end
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function initialized_
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end
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function same_
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end
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function refcount_
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end
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function id_
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end
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function name_
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end
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subroutine tag_new_object
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end
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end
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! CHECK: !need$ {{.*}} n modfile73bb
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! CHECK-NEXT: !need$ {{.*}} n modfile73c
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