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gh-145187: Fix crash on invalid type parameter bound expression in conditional block (GH-145188)

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Fix parsing crash found by oss-fuzz
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Stan Ulbrych 2026-02-24 20:44:57 +00:00 • committed by GitHub
parent 56c4f10d6e
commit 5e61a16c10
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3 changed files with 12 additions and 3 deletions
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6
Python/codegen.c
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@ -1244,11 +1244,11 @@ codegen_type_param_bound_or_default(compiler *c, expr_ty e,
ADDOP_LOAD_CONST_NEW(c, LOC(e), defaults);
RETURN_IF_ERROR(codegen_setup_annotations_scope(c, LOC(e), key, name));
if (allow_starred && e->kind == Starred_kind) {
VISIT(c, expr, e->v.Starred.value);
ADDOP_I(c, LOC(e), UNPACK_SEQUENCE, (Py_ssize_t)1);
VISIT_IN_SCOPE(c, expr, e->v.Starred.value);
ADDOP_I_IN_SCOPE(c, LOC(e), UNPACK_SEQUENCE, (Py_ssize_t)1);
}
else {
VISIT(c, expr, e);
VISIT_IN_SCOPE(c, expr, e);
}
ADDOP_IN_SCOPE(c, LOC(e), RETURN_VALUE);
PyCodeObject *co = _PyCompile_OptimizeAndAssemble(c, 1);