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annotate Modules/_sqlite/util.c @ 82251:bb5a8564e186 2.7

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Issue #13153: Tkinter functions now raise TclError instead of ValueError when a unicode argument contains non-BMP character.
author Serhiy Storchaka <storchaka@gmail.com>
date Mon, 18 Feb 2013 13:00:08 +0200
parents 649937bb8f1c
children 44fe1f5b07e3
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1 /* util.c - various utility functions
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2 *
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3 * Copyright (C) 2005-2010 Gerhard Häring <gh@ghaering.de>
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4 *
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5 * This file is part of pysqlite.
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6 *
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7 * This software is provided 'as-is', without any express or implied
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8 * warranty. In no event will the authors be held liable for any damages
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9 * arising from the use of this software.
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10 *
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11 * Permission is granted to anyone to use this software for any purpose,
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12 * including commercial applications, and to alter it and redistribute it
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13 * freely, subject to the following restrictions:
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14 *
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15 * 1. The origin of this software must not be misrepresented; you must not
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16 * claim that you wrote the original software. If you use this software
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17 * in a product, an acknowledgment in the product documentation would be
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18 * appreciated but is not required.
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19 * 2. Altered source versions must be plainly marked as such, and must not be
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20 * misrepresented as being the original software.
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21 * 3. This notice may not be removed or altered from any source distribution.
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22 */
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23
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24 #include "module.h"
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25 #include "connection.h"
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26
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4c77d1016f60 Fixes issue #3103. In the sqlite3 module, made one more function static. All renaming public symbos now have the pysqlite prefix to avoid name clashes. This at least once created problems where the same symbol name appeared somewhere in Apache and the sqlite3 module was used from mod_python.
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27 int pysqlite_step(sqlite3_stmt* statement, pysqlite_Connection* connection)
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28 {
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29 int rc;
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30
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31 if (statement == NULL) {
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32 /* this is a workaround for SQLite 3.5 and later. it now apparently
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33 * returns NULL for "no-operation" statements */
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34 rc = SQLITE_OK;
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35 } else {
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36 Py_BEGIN_ALLOW_THREADS
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37 rc = sqlite3_step(statement);
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38 Py_END_ALLOW_THREADS
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39 }
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40
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41 return rc;
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42 }
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43
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44 /**
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45 * Checks the SQLite error code and sets the appropriate DB-API exception.
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46 * Returns the error code (0 means no error occurred).
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47 */
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48 int _pysqlite_seterror(sqlite3* db, sqlite3_stmt* st)
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49 {
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50 int errorcode;
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51
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52 /* SQLite often doesn't report anything useful, unless you reset the statement first */
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53 if (st != NULL) {
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54 (void)sqlite3_reset(st);
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55 }
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56
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57 errorcode = sqlite3_errcode(db);
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58
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59 switch (errorcode)
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60 {
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61 case SQLITE_OK:
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62 PyErr_Clear();
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63 break;
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64 case SQLITE_INTERNAL:
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65 case SQLITE_NOTFOUND:
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66 PyErr_SetString(pysqlite_InternalError, sqlite3_errmsg(db));
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67 break;
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68 case SQLITE_NOMEM:
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69 (void)PyErr_NoMemory();
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70 break;
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71 case SQLITE_ERROR:
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72 case SQLITE_PERM:
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73 case SQLITE_ABORT:
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74 case SQLITE_BUSY:
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75 case SQLITE_LOCKED:
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76 case SQLITE_READONLY:
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77 case SQLITE_INTERRUPT:
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78 case SQLITE_IOERR:
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79 case SQLITE_FULL:
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80 case SQLITE_CANTOPEN:
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81 case SQLITE_PROTOCOL:
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82 case SQLITE_EMPTY:
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83 case SQLITE_SCHEMA:
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84 PyErr_SetString(pysqlite_OperationalError, sqlite3_errmsg(db));
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85 break;
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86 case SQLITE_CORRUPT:
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87 PyErr_SetString(pysqlite_DatabaseError, sqlite3_errmsg(db));
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88 break;
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89 case SQLITE_TOOBIG:
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90 PyErr_SetString(pysqlite_DataError, sqlite3_errmsg(db));
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91 break;
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92 case SQLITE_CONSTRAINT:
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93 case SQLITE_MISMATCH:
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94 PyErr_SetString(pysqlite_IntegrityError, sqlite3_errmsg(db));
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95 break;
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96 case SQLITE_MISUSE:
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97 PyErr_SetString(pysqlite_ProgrammingError, sqlite3_errmsg(db));
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98 break;
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99 default:
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100 PyErr_SetString(pysqlite_DatabaseError, sqlite3_errmsg(db));
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101 break;
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102 }
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103
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104 return errorcode;
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105 }
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106
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107 #ifdef WORDS_BIGENDIAN
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108 # define IS_LITTLE_ENDIAN 0
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109 #else
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110 # define IS_LITTLE_ENDIAN 1
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111 #endif
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112
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113 PyObject *
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114 _pysqlite_long_from_int64(sqlite3_int64 value)
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115 {
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116 #ifdef HAVE_LONG_LONG
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117 # if SIZEOF_LONG_LONG < 8
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118 if (value > PY_LLONG_MAX || value < PY_LLONG_MIN) {
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119 return _PyLong_FromByteArray(&value, sizeof(value),
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120 IS_LITTLE_ENDIAN, 1 /* signed */);
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121 }
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122 # endif
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123 # if SIZEOF_LONG < SIZEOF_LONG_LONG
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124 if (value > LONG_MAX || value < LONG_MIN)
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125 return PyLong_FromLongLong(value);
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126 # endif
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127 #else
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128 # if SIZEOF_LONG < 8
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129 if (value > LONG_MAX || value < LONG_MIN) {
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130 return _PyLong_FromByteArray(&value, sizeof(value),
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131 IS_LITTLE_ENDIAN, 1 /* signed */);
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132 }
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133 # endif
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134 #endif
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135 return PyInt_FromLong(value);
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136 }
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137
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Serhiy Storchaka <storchaka@gmail.com>
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138 sqlite3_int64
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parents: 68256
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139 _pysqlite_long_as_int64(PyObject * py_val)
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
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parents: 68256
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140 {
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
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parents: 68256
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141 int overflow;
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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142 #ifdef HAVE_LONG_LONG
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
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parents: 68256
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143 PY_LONG_LONG value = PyLong_AsLongLongAndOverflow(py_val, &overflow);
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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144 #else
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parents: 68256
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145 long value = PyLong_AsLongAndOverflow(py_val, &overflow);
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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146 #endif
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
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parents: 68256
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147 if (value == -1 && PyErr_Occurred())
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
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148 return -1;
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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149 if (!overflow) {
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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150 #ifdef HAVE_LONG_LONG
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parents: 68256
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151 # if SIZEOF_LONG_LONG > 8
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
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parents: 68256
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152 if (-0x8000000000000000LL <= value && value <= 0x7FFFFFFFFFFFFFFFLL)
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parents: 68256
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153 # endif
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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154 #else
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Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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155 # if SIZEOF_LONG > 8
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
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parents: 68256
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156 if (-0x8000000000000000L <= value && value <= 0x7FFFFFFFFFFFFFFFL)
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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157 # endif
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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158 #endif
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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159 return value;
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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160 }
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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161 else if (sizeof(value) < sizeof(sqlite3_int64)) {
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Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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162 sqlite3_int64 int64val;
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parents: 68256
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163 if (_PyLong_AsByteArray((PyLongObject *)py_val,
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parents: 68256
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164 (unsigned char *)&int64val, sizeof(int64val),
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parents: 68256
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165 IS_LITTLE_ENDIAN, 1 /* signed */) >= 0) {
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
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parents: 68256
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166 return int64val;
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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167 }
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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168 }
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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169 PyErr_SetString(PyExc_OverflowError,
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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170 "Python int too large to convert to SQLite INTEGER");
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
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parents: 68256
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171 return -1;
649937bb8f1c Issue #17073: Fix some integer overflows in sqlite3 module.
Serhiy Storchaka <storchaka@gmail.com>
parents: 68256
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172 }