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Fixed a bug that results in a false positive "recursive type definiti… #9722

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merged 1 commit into from
Jan 17, 2025

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…on" error under certain circumstances when the number of declarations for a symbol exceeds the internal threshold of 16. This addresses #9721.

…on" error under certain circumstances when the number of declarations for a symbol exceeds the internal threshold of 16. This addresses #9721.
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Diff from mypy_primer, showing the effect of this PR on open source code:

sympy (https://github.com/sympy/sympy)
-   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:120:18 - error: Argument of type "Equality | Unknown" cannot be assigned to parameter "expr" of type "Expr" in function "add"
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:120:18 - error: Argument of type "Equality | Unknown | Relational | Unequality | Integer" cannot be assigned to parameter "expr" of type "Expr" in function "add"
-     Type "Equality | Unknown" is not assignable to type "Expr"
+     Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
-       "Equality" is not assignable to "Expr" (reportArgumentType)
+       "Relational" is not assignable to "Expr" (reportArgumentType)
-   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:123:18 - error: Argument of type "Equality | Unknown" cannot be assigned to parameter "expr" of type "Expr" in function "add"
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:123:18 - error: Argument of type "Equality | Unknown | Relational | Unequality | Integer" cannot be assigned to parameter "expr" of type "Expr" in function "add"
-     Type "Equality | Unknown" is not assignable to type "Expr"
+     Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
-       "Equality" is not assignable to "Expr" (reportArgumentType)
+       "Relational" is not assignable to "Expr" (reportArgumentType)
-   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:126:9 - error: Argument of type "Equality | Unknown" cannot be assigned to parameter "expr" of type "Expr" in function "add"
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:126:9 - error: Argument of type "Equality | Unknown | Relational | Unequality | Integer" cannot be assigned to parameter "expr" of type "Expr" in function "add"
-     Type "Equality | Unknown" is not assignable to type "Expr"
+     Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
-       "Equality" is not assignable to "Expr" (reportArgumentType)
+       "Relational" is not assignable to "Expr" (reportArgumentType)
-   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:132:9 - error: Argument of type "Equality | Unknown" cannot be assigned to parameter "expr" of type "Expr" in function "add"
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:132:9 - error: Argument of type "Equality | Unknown | Relational | Unequality | Integer" cannot be assigned to parameter "expr" of type "Expr" in function "add"
-     Type "Equality | Unknown" is not assignable to type "Expr"
+     Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
-       "Equality" is not assignable to "Expr" (reportArgumentType)
+       "Relational" is not assignable to "Expr" (reportArgumentType)
-   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:895:12 - error: Operator "/" not supported for types "Equality | Unknown" and "Literal[2]"
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:895:12 - error: Operator "/" not supported for types "Equality | Unknown | Relational | Unequality | Integer" and "Literal[2]"
+     Operator "/" not supported for types "Equality" and "Literal[2]"
+     Operator "/" not supported for types "Relational" and "Literal[2]"
-     Operator "/" not supported for types "Equality" and "Literal[2]" (reportOperatorIssue)
+     Operator "/" not supported for types "Unequality" and "Literal[2]" (reportOperatorIssue)
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1863:12 - error: Cannot access attribute "combsimp" for class "Relational"
+     Attribute "combsimp" is unknown (reportAttributeAccessIssue)
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1863:12 - error: Cannot access attribute "combsimp" for class "Unequality"
+     Attribute "combsimp" is unknown (reportAttributeAccessIssue)
+     Attribute "factor" is unknown (reportAttributeAccessIssue)
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1911:14 - error: Cannot access attribute "factor" for class "Relational"
+     Attribute "factor" is unknown (reportAttributeAccessIssue)
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1911:14 - error: Cannot access attribute "factor" for class "Unequality"
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1918:14 - error: Cannot access attribute "combsimp" for class "Relational"
+     Attribute "combsimp" is unknown (reportAttributeAccessIssue)
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1918:14 - error: Cannot access attribute "combsimp" for class "Unequality"
+     Attribute "combsimp" is unknown (reportAttributeAccessIssue)
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1932:12 - error: Cannot access attribute "combsimp" for class "Relational"
+     Attribute "combsimp" is unknown (reportAttributeAccessIssue)
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1932:12 - error: Cannot access attribute "combsimp" for class "Unequality"
+     Attribute "combsimp" is unknown (reportAttributeAccessIssue)
-   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1992:22 - error: Argument of type "Equality | Unknown | NaN | Sum" cannot be assigned to parameter "x" of type "ConvertibleToFloat" in function "__new__"
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1992:22 - error: Argument of type "Equality | Unknown | Relational | Unequality | Integer | NaN | Sum" cannot be assigned to parameter "x" of type "ConvertibleToFloat" in function "__new__"
-     Type "Equality | Unknown | NaN | Sum" is not assignable to type "ConvertibleToFloat"
+     Type "Equality | Unknown | Relational | Unequality | Integer | NaN | Sum" is not assignable to type "ConvertibleToFloat"
-       Type "Equality" is not assignable to type "ConvertibleToFloat"
+       Type "Relational" is not assignable to type "ConvertibleToFloat"
-         "Equality" is not assignable to "str"
+         "Relational" is not assignable to "str"
-         "Equality" is incompatible with protocol "Buffer"
+         "Relational" is incompatible with protocol "Buffer"
-         "Equality" is incompatible with protocol "SupportsFloat"
+         "Relational" is incompatible with protocol "SupportsFloat"
-         "Equality" is incompatible with protocol "SupportsIndex"
+         "Relational" is incompatible with protocol "SupportsIndex"
+     Attribute "gammasimp" is unknown (reportAttributeAccessIssue)
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2074:56 - error: Cannot access attribute "gammasimp" for class "Relational"
+     Attribute "gammasimp" is unknown (reportAttributeAccessIssue)
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2074:56 - error: Cannot access attribute "gammasimp" for class "Unequality"
-   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2973:37 - error: Operator "*" not supported for types "Literal[2]" and "Equality | Unknown | NaN | Sum"
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2973:37 - error: Operator "*" not supported for types "Literal[2]" and "Equality | Unknown | Relational | Unequality | Integer | NaN | Sum"
+     Operator "*" not supported for types "Literal[2]" and "Equality"
+     Operator "*" not supported for types "Literal[2]" and "Relational"
-     Operator "*" not supported for types "Literal[2]" and "Equality" (reportOperatorIssue)
+     Operator "*" not supported for types "Literal[2]" and "Unequality" (reportOperatorIssue)
-   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2978:17 - error: Operator "*" not supported for types "Literal[2]" and "Equality | Unknown | NaN | Sum"
+   /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2978:17 - error: Operator "*" not supported for types "Literal[2]" and "Equality | Unknown | Relational | Unequality | Integer | NaN | Sum"
+     Operator "*" not supported for types "Literal[2]" and "Equality"
+     Operator "*" not supported for types "Literal[2]" and "Relational"
-     Operator "*" not supported for types "Literal[2]" and "Equality" (reportOperatorIssue)
+     Operator "*" not supported for types "Literal[2]" and "Unequality" (reportOperatorIssue)
-   /tmp/mypy_primer/projects/sympy/sympy/vector/implicitregion.py:114:20 - error: Operator "**" not supported for "None" (reportOptionalOperand)
-   /tmp/mypy_primer/projects/sympy/sympy/vector/implicitregion.py:114:28 - error: Operator "*" not supported for types "Literal[4]" and "One | Zero | Expr | Unknown | Any | None"
-     Operator "*" not supported for types "Literal[4]" and "None" (reportOperatorIssue)
-   /tmp/mypy_primer/projects/sympy/sympy/vector/implicitregion.py:128:16 - error: Argument of type "Unknown | FiniteSet | Set | Union | Intersection | Complement | ConditionSet" cannot be assigned to parameter "obj" of type "Sized" in function "len"
+   /tmp/mypy_primer/projects/sympy/sympy/vector/implicitregion.py:128:16 - error: Argument of type "Unknown | FiniteSet | ConditionSet" cannot be assigned to parameter "obj" of type "Sized" in function "len"
-     Type "Unknown | FiniteSet | Set | Union | Intersection | Complement | ConditionSet" is not assignable to type "Sized"
+     Type "Unknown | FiniteSet | ConditionSet" is not assignable to type "Sized"
-       "Set" is incompatible with protocol "Sized"
+       "ConditionSet" is incompatible with protocol "Sized"

... (truncated 56 lines) ...

@erictraut erictraut merged commit 8e70199 into main Jan 17, 2025
17 checks passed
@erictraut erictraut deleted the issue-9721 branch January 17, 2025 19:06
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