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[3.10] bpo-42972: Track sqlite3 statement objects (GH-26475) (GH-26515)

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Allocate and track statement objects in pysqlite_statement_create.

By allocating and tracking creation of statement object in
pysqlite_statement_create(), the caller does not need to worry about GC
syncronization, and eliminates the possibility of getting a badly
created object. All related fault handling is moved to
pysqlite_statement_create().

Co-authored-by: Victor Stinner <vstinner@python.org>.
(cherry picked from commit fffa0f92ad)

Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>
This commit is contained in:
Erlend Egeberg Aasland 2021-06-03 18:38:09 +02:00 • committed by GitHub
parent 41317801a9
commit 84d80f5f30
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4 changed files with 40 additions and 48 deletions
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5
Modules/_sqlite/statement.h
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@ -29,9 +29,6 @@
#include "connection.h"
#include "sqlite3.h"
#define PYSQLITE_TOO_MUCH_SQL (-100)
#define PYSQLITE_SQL_WRONG_TYPE (-101)
typedef struct
{
PyObject_HEAD
@ -45,7 +42,7 @@ typedef struct
extern PyTypeObject *pysqlite_StatementType;
int pysqlite_statement_create(pysqlite_Statement* self, pysqlite_Connection* connection, PyObject* sql);
pysqlite_Statement *pysqlite_statement_create(pysqlite_Connection *connection, PyObject *sql);
int pysqlite_statement_bind_parameter(pysqlite_Statement* self, int pos, PyObject* parameter);
void pysqlite_statement_bind_parameters(pysqlite_Statement* self, PyObject* parameters);