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Track type equivalences #97

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8969a29
[docs][field_ctor] add missing limitations in toc
fantazio Aug 11, 2026
a2f60a8
[docs][field_ctor] add equal_types limitation
fantazio Aug 11, 2026
f49805e
[src][deadType] keep track of equivalent types
fantazio Aug 11, 2026
35ef187
[src][deadType] track equivalence through includes
fantazio Aug 12, 2026
3ccb5ff
[src][deadType] track equivalence through module aliases
fantazio Aug 12, 2026
46d57c4
[examples][field_ctor] add all_internal eq_types
fantazio Aug 20, 2026
33e836c
[src][deadType] handle internal type equivalences
fantazio Aug 19, 2026
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11 changes: 11 additions & 0 deletions check/classic/classic.exp
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Original file line number Diff line number Diff line change
Expand Up @@ -269,6 +269,17 @@ Nothing else to report in this section
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:2: either.Right
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:3: both.left

./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:9: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:18: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:9: Alias.sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:17: Alias.product.unused

./examples/using_dune/preprocessed_lib/preprocessed.mli:14: constructors.Unused
./examples/using_dune/preprocessed_lib/preprocessed.mli:19: constr_with_eq.Unused
./examples/using_dune/preprocessed_lib/preprocessed.mli:23: record.unused
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15 changes: 13 additions & 2 deletions check/classic/classic.ref
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Original file line number Diff line number Diff line change
Expand Up @@ -269,6 +269,17 @@ Nothing else to report in this section
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:2: either.Right
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:3: both.left

./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:9: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:18: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:9: Alias.sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:17: Alias.product.unused

./examples/using_dune/preprocessed_lib/preprocessed.mli:14: constructors.Unused
./examples/using_dune/preprocessed_lib/preprocessed.mli:19: constr_with_eq.Unused
./examples/using_dune/preprocessed_lib/preprocessed.mli:23: record.unused
Expand Down Expand Up @@ -721,7 +732,7 @@ Nothing else to report in this section
--------------------------------------------------------------------------------


Total: 593
Success: 593
Total: 603
Success: 603
Failed: 0
Ratio: 100.%
11 changes: 11 additions & 0 deletions check/internal/internal.exp
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Original file line number Diff line number Diff line change
Expand Up @@ -221,6 +221,17 @@ Nothing else to report in this section
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:2: either.Right
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:3: both.left

./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:9: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:18: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:9: Alias.sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:17: Alias.product.unused

./examples/using_dune/preprocessed_lib/preprocessed.mli:14: constructors.Unused
./examples/using_dune/preprocessed_lib/preprocessed.mli:19: constr_with_eq.Unused
./examples/using_dune/preprocessed_lib/preprocessed.mli:23: record.unused
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15 changes: 13 additions & 2 deletions check/internal/internal.ref
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Original file line number Diff line number Diff line change
Expand Up @@ -221,6 +221,17 @@ Nothing else to report in this section
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:2: either.Right
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:3: both.left

./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:9: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:18: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:9: Alias.sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:17: Alias.product.unused

./examples/using_dune/preprocessed_lib/preprocessed.mli:14: constructors.Unused
./examples/using_dune/preprocessed_lib/preprocessed.mli:19: constr_with_eq.Unused
./examples/using_dune/preprocessed_lib/preprocessed.mli:23: record.unused
Expand Down Expand Up @@ -673,7 +684,7 @@ Nothing else to report in this section
--------------------------------------------------------------------------------


Total: 549
Success: 549
Total: 559
Success: 559
Failed: 0
Ratio: 100.%
64 changes: 64 additions & 0 deletions check/threshold-1/threshold-1.exp
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Original file line number Diff line number Diff line change
Expand Up @@ -612,6 +612,17 @@ Nothing else to report in this section
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:2: either.Right
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:3: both.left

./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:9: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:18: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:8: sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:16: product.unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:9: Alias.sum.Unused
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:17: Alias.product.unused

./examples/using_dune/preprocessed_lib/preprocessed.mli:14: constructors.Unused
./examples/using_dune/preprocessed_lib/preprocessed.mli:19: constr_with_eq.Unused
./examples/using_dune/preprocessed_lib/preprocessed.mli:23: record.unused
Expand Down Expand Up @@ -691,6 +702,59 @@ Nothing else to report in this section
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:2: either.Left
./examples/docs/fields_and_constructors/code_constructs/polymorphic_type/polymorphic_type_lib.mli:3: both.right

./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:3: sum.Used_by_explicit_equation
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:4: sum.Used_by_hidden_equation
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:5: sum.Used_by_include
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:6: sum.Used_by_module_alias
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:7: sum.Used_directly
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:8: sum.Used_externally
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:12: product.used_by_explicit_equation
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:13: product.used_by_hidden_equation
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:14: product.used_by_include
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:15: product.used_by_module_alias
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:16: product.used_directly
./examples/docs/fields_and_constructors/limitations/equal_types/all_internal.mli:17: product.used_externally
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:3: sum.Used_by_explicit_equation
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:4: sum.Used_by_hidden_equation
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:5: sum.Used_by_include
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:6: sum.Used_by_module_alias
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:7: sum.Used_directly
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:11: product.used_by_explicit_equation
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:12: product.used_by_hidden_equation
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:13: product.used_by_include
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:14: product.used_by_module_alias
./examples/docs/fields_and_constructors/limitations/equal_types/definitions.ml:15: product.used_directly
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:3: sum.Used_by_explicit_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:4: sum.Used_by_hidden_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:5: sum.Used_by_include
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:6: sum.Used_by_module_alias
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:7: sum.Used_directly
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:11: product.used_by_explicit_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:12: product.used_by_hidden_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:13: product.used_by_include
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:14: product.used_by_module_alias
./examples/docs/fields_and_constructors/limitations/equal_types/via_hidden_equations.mli:15: product.used_directly
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:3: sum.Used_by_explicit_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:4: sum.Used_by_hidden_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:5: sum.Used_by_include
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:6: sum.Used_by_module_alias
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:7: sum.Used_directly
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:11: product.used_by_explicit_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:12: product.used_by_hidden_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:13: product.used_by_include
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:14: product.used_by_module_alias
./examples/docs/fields_and_constructors/limitations/equal_types/via_include.mli:15: product.used_directly
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:4: Alias.sum.Used_by_explicit_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:5: Alias.sum.Used_by_hidden_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:6: Alias.sum.Used_by_include
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:7: Alias.sum.Used_by_module_alias
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:8: Alias.sum.Used_directly
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:12: Alias.product.used_by_explicit_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:13: Alias.product.used_by_hidden_equation
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:14: Alias.product.used_by_include
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:15: Alias.product.used_by_module_alias
./examples/docs/fields_and_constructors/limitations/equal_types/via_module_alias.mli:16: Alias.product.used_directly

./examples/using_dune/preprocessed_lib/preprocessed.mli:16: constructors.Internally_used
./examples/using_dune/preprocessed_lib/preprocessed.mli:17: constructors.Externally_used
./examples/using_dune/preprocessed_lib/preprocessed.mli:25: record.internally_used
Expand Down
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