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Bug#29856: Insufficient buffer space led to a server crash.
The subst_spvars function is used to create query string with SP variables substituted with their values. This string is used later for the binary log and for the query cache. The problem is that the query_cache_send_result_to_client function requires some additional space after the query to store database name and query cache flags. This space wasn't reserved by the subst_spvars function which led to a memory corruption and crash. Now the subst_spvars function reserves additional space for the query cache.
This commit is contained in:
evgen@moonbone.local
parent
4f579b8d0e
commit
123666299e
3 changed files with 327 additions and 72 deletions
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@ -1467,3 +1467,122 @@ insert into t1 values ('c');
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a
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drop table t1;
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set GLOBAL query_cache_size= default;
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SET GLOBAL query_cache_size=64*1024*1024;
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CREATE TABLE t1 (id INT);
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CREATE PROCEDURE proc29856(IN theUPC TEXT)
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BEGIN
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SET @stmtStr := '';
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SELECT CONCAT("SELECT id FROM t1 WHERE id IN (",theUPC,")") INTO @stmtStr;
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PREPARE stmt FROM @stmtStr;
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EXECUTE stmt;
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END |
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CALL proc29856('1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,
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25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,
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51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,
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77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,
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102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,
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121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,
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140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,
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159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,
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178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,
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197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,
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216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,
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235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,
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254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,
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273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,
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292,293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,
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311,312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,
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330,331,332,333,334,335,336,337,338,339,340,341,342,343,344,345,346,347,348,
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349,350,351,352,353,354,355,356,357,358,359,360,361,362,363,364,365,366,367,
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368,369,370,371,372,373,374,375,376,377,378,379,380,381,382,383,384,385,386,
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387,388,389,390,391,392,393,394,395,396,397,398,399,400,401,402,403,404,405,
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406,407,408,409,410,411,412,413,414,415,416,417,418,419,420,421,422,423,424,
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425,426,427,428,429,430,431,432,433,434,435,436,437,438,439,440,441,442,443,
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444,445,446,447,448,449,450,451,452,453,454,455,456,457,458,459,460,461,462,
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463,464,465,466,467,468,469,470,471,472,473,474,475,476,477,478,479,480,481,
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482,483,484,485,486,487,488,489,490,491,492,493,494,495,496,497,498,499,500,
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501,502,503,504,505,506,507,508,509,510,511,512,513,514,515,516,517,518,519,
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520,521,522,523,524,525,526,527,528,529,530,531,532,533,534,535,536,537,538,
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539,540,541,542,543,544,545,546,547,548,549,550,551,552,553,554,555,556,557,
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558,559,560,561,562,563,564,565,566,567,568,569,570,571,572,573,574,575,576,
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577,578,579,580,581,582,583,584,585,586,587,588,589,590,591,592,593,594,595,
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596,597,598,599,600,601,602,603,604,605,606,607,608,609,610,611,612,613,614,
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615,616,617,618,619,620,621,622,623,624,625,626,627,628,629,630,631,632,633,
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634,635,636,637,638,639,640,641,642,643,644,645,646,647,648,649,650,651,652,
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653,654,655,656,657,658,659,660,661,662,663,664,665,666,667,668,669,670,671,
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672,673,674,675,676,677,678,679,680,681,682,683,684,685,686,687,688,689,690,
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691,692,693,694,695,696,697,698,699,700,701,702,703,704,705,706,707,708,709,
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710,711,712,713,714,715,716,717,718,719,720,721,722,723,724,725,726,727,728,
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729,730,731,732,733,734,735,736,737,738,739,740,741,742,743,744,745,746,747,
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748,749,750,751,752,753,754,755,756,757,758,759,760,761,762,763,764,765,766,
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767,768,769,770,771,772,773,774,775,776,777,778,779,780,781,782,783,784,785,
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786,787,788,789,790,791,792,793,794,795,796,797,798,799,800,801,802,803,804,
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805,806,807,808,809,810,811,812,813,814,815,816,817,818,819,820,821,822,823,
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824,825,826,827,828,829,830,831,832,833,834,835,836,837,838,839,840,841,842,
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843,844,845,846,847,848,849,850,851,852,853,854,855,856,857,858,859,860,861,
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862,863,864,865,866,867,868,869,870,871,872,873,874,875,876,877,878,879,880,
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881,882,883,884,885,886,887,888,889,890,891,892,893,894,895,896,897,898,899,
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900,901,902,903,904,905,906,907,908,909,910,911,912,913,914,915,916,917,918,
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919,920,921,922,923,924,925,926,927,928,929,930,931,932,933,934,935,936,937,
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938,939,940,941,942,943,944,945,946,947,948,949,950,951,952,953,954,955,956,
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957,958,959,960,961,962,963,964,965,966,967,968,969,970,971,972,973,974,975,
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976,977,978,979,980,981,982,983,984,985,986,987,988,989,990,991,992,993,994,
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995,996,997,998,999,1000,1001,1002,1003,1004,1005,1006,1007,1008,1009,1010,
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1011,1012,1013,1014,1015,1016,1017,1018,1019,1020,1021,1022,1023,1024,1025,
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1026,1027,1028,1029,1030,1031,1032,1033,1034,1035,1036,1037,1038,1039,1040,
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1041,1042,1043,1044,1045,1046,1047,1048,1049,1050,1051,1052,1053,1054,1055,
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1056,1057,1058,1059,1060,1061,1062,1063,1064,1065,1066,1067,1068,1069,1070,
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1071,1072,1073,1074,1075,1076,1077,1078,1079,1080,1081,1082,1083,1084,1085,
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1086,1087,1088,1089,1090,1091,1092,1093,1094,1095,1096,1097,1098,1099,1100,
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1101,1102,1103,1104,1105,1106,1107,1108,1109,1110,1111,1112,1113,1114,1115,
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1116,1117,1118,1119,1120,1121,1122,1123,1124,1125,1126,1127,1128,1129,1130,
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1131,1132,1133,1134,1135,1136,1137,1138,1139,1140,1141,1142,1143,1144,1145,
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1146,1147,1148,1149,1150,1151,1152,1153,1154,1155,1156,1157,1158,1159,1160,
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1161,1162,1163,1164,1165,1166,1167,1168,1169,1170,1171,1172,1173,1174,1175,
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1176,1177,1178,1179,1180,1181,1182,1183,1184,1185,1186,1187,1188,1189,1190,
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1191,1192,1193,1194,1195,1196,1197,1198,1199,1200,1201,1202,1203,1204,1205,
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1206,1207,1208,1209,1210,1211,1212,1213,1214,1215,1216,1217,1218,1219,1220,
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1221,1222,1223,1224,1225,1226,1227,1228,1229,1230,1231,1232,1233,1234,1235,
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1236,1237,1238,1239,1240,1241,1242,1243,1244,1245,1246,1247,1248,1249,1250,
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1251,1252,1253,1254,1255,1256,1257,1258,1259,1260,1261,1262,1263,1264,1265,
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1266,1267,1268,1269,1270,1271,1272,1273,1274,1275,1276,1277,1278,1279,1280,
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1281,1282,1283,1284,1285,1286,1287,1288,1289,1290,1291,1292,1293,1294,1295,
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1296,1297,1298,1299,1300,1301,1302,1303,1304,1305,1306,1307,1308,1309,1310,
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1311,1312,1313,1314,1315,1316,1317,1318,1319,1320,1321,1322,1323,1324,1325,
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1326,1327,1328,1329,1330,1331,1332,1333,1334,1335,1336,1337,1338,1339,1340,
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1341,1342,1343,1344,1345,1346,1347,1348,1349,1350,1351,1352,1353,1354,1355,
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1356,1357,1358,1359,1360,1361,1362,1363,1364,1365,1366,1367,1368,1369,1370,
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1371,1372,1373,1374,1375,1376,1377,1378,1379,1380,1381,1382,1383,1384,1385,
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1386,1387,1388,1389,1390,1391,1392,1393,1394,1395,1396,1397,1398,1399,1400,
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1401,1402,1403,1404,1405,1406,1407,1408,1409,1410,1411,1412,1413,1414,1415,
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1416,1417,1418,1419,1420,1421,1422,1423,1424,1425,1426,1427,1428,1429,1430,
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1431,1432,1433,1434,1435,1436,1437,1438,1439,1440,1441,1442,1443,1444,1445,
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1446,1447,1448,1449,1450,1451,1452,1453,1454,1455,1456,1457,1458,1459,1460,
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1461,1462,1463,1464,1465,1466,1467,1468,1469,1470,1471,1472,1473,1474,1475,
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1476,1477,1478,1479,1480,1481,1482,1483,1484,1485,1486,1487,1488,1489,1490,
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1491,1492,1493,1494,1495,1496,1497,1498,1499,1500,1501,1502,1503,1504,1505,
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1506,1507,1508,1509,1510,1511,1512,1513,1514,1515,1516,1517,1518,1519,1520,
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1521,1522,1523,1524,1525,1526,1527,1528,1529,1530,1531,1532,1533,1534,1535,
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1536,1537,1538,1539,1540,1541,1542,1543,1544,1545,1546,1547,1548,1549,1550,
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1551,1552,1553,1554,1555,1556,1557,1558,1559,1560,1561,1562,1563,1564,1565,
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1566,1567,1568,1569,1570,1571,1572,1573,1574,1575,1576,1577,1578,1579,1580,
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1581,1582,1583,1584,1585,1586,1587,1588,1589,1590,1591,1592,1593,1594,1595,
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1596,1597,1598,1599,1600,1601,1602,1603,1604,1605,1606,1607,1608,1609,1610,
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1611,1612,1613,1614,1615,1616,1617,1618,1619,1620,1621,1622,1623,1624,1625,
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1626,1627,1628,1629,1630,1631,1632,1633,1634,1635,1636,1637,1638,1639,1640,
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1641,1642,1643,1644,1645,1646,1647,1648,1649,1650,1651,1652,1653,1654,1655,
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1656,1657,1658,1659,1660,1661,1662,1663,1664,1665,1666,1667,1668,1669,1670,
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1671,1672,1673,1674,1675,1676,1677,1678,1679,1680,1681,1682,1683,1684,1685,
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1686,1687,1688,1689,1690,1691,1692,1693,1694,1695,1696,1697,1698,1699,1700,
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1701,1702,1703,1704,1705,1706,1707,1708,1709,1710,1711,1712,1713,1714,1715,
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1716,1717,1718,1719,1720,1721,1722,1723,1724,1725,1726,1727,1728,1729,1730,
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1731,1732,1733,1734,1735,1736,1737,1738,1739,1740,1741,1742,1743,1744,1745,
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1746,1747,1748,1749,1750,1751,1752,1753,1754,1755,1756,1757,1758,1759,1760,
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1761,1762,1763,1764,1765,1766,1767,1768,1769,1770,1771,1772,1773,1774,1775,
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1776,1777,1778,1779,1780,1781,1782,1783,1784,1785,1786,1787,1788,1789,1790,
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1791,1792,1793,1794,1795,1796,1797,1798,1799,1800,1801,1802,1803,1804,1805,
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1806,1807,1808,1809,1810,1811');
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id
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DROP PROCEDURE proc29856;
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DROP TABLE t1;
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SET GLOBAL query_cache_size= default;
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@ -1028,4 +1028,128 @@ drop table t1;
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set GLOBAL query_cache_size= default;
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#
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# Bug#29856: Insufficient buffer space led to a server crash.
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#
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SET GLOBAL query_cache_size=64*1024*1024;
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CREATE TABLE t1 (id INT);
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DELIMITER |;
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CREATE PROCEDURE proc29856(IN theUPC TEXT)
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BEGIN
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SET @stmtStr := '';
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SELECT CONCAT("SELECT id FROM t1 WHERE id IN (",theUPC,")") INTO @stmtStr;
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PREPARE stmt FROM @stmtStr;
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EXECUTE stmt;
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END |
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DELIMITER ;|
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CALL proc29856('1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,
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25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,
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51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,
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77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,
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102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,
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121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,
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140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,
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159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,
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178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,
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197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,
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216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,
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235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,
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254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,
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273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,
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292,293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,
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311,312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,
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330,331,332,333,334,335,336,337,338,339,340,341,342,343,344,345,346,347,348,
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349,350,351,352,353,354,355,356,357,358,359,360,361,362,363,364,365,366,367,
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368,369,370,371,372,373,374,375,376,377,378,379,380,381,382,383,384,385,386,
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387,388,389,390,391,392,393,394,395,396,397,398,399,400,401,402,403,404,405,
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406,407,408,409,410,411,412,413,414,415,416,417,418,419,420,421,422,423,424,
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425,426,427,428,429,430,431,432,433,434,435,436,437,438,439,440,441,442,443,
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444,445,446,447,448,449,450,451,452,453,454,455,456,457,458,459,460,461,462,
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463,464,465,466,467,468,469,470,471,472,473,474,475,476,477,478,479,480,481,
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482,483,484,485,486,487,488,489,490,491,492,493,494,495,496,497,498,499,500,
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501,502,503,504,505,506,507,508,509,510,511,512,513,514,515,516,517,518,519,
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520,521,522,523,524,525,526,527,528,529,530,531,532,533,534,535,536,537,538,
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539,540,541,542,543,544,545,546,547,548,549,550,551,552,553,554,555,556,557,
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558,559,560,561,562,563,564,565,566,567,568,569,570,571,572,573,574,575,576,
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577,578,579,580,581,582,583,584,585,586,587,588,589,590,591,592,593,594,595,
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596,597,598,599,600,601,602,603,604,605,606,607,608,609,610,611,612,613,614,
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615,616,617,618,619,620,621,622,623,624,625,626,627,628,629,630,631,632,633,
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634,635,636,637,638,639,640,641,642,643,644,645,646,647,648,649,650,651,652,
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653,654,655,656,657,658,659,660,661,662,663,664,665,666,667,668,669,670,671,
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672,673,674,675,676,677,678,679,680,681,682,683,684,685,686,687,688,689,690,
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691,692,693,694,695,696,697,698,699,700,701,702,703,704,705,706,707,708,709,
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710,711,712,713,714,715,716,717,718,719,720,721,722,723,724,725,726,727,728,
|
||||
729,730,731,732,733,734,735,736,737,738,739,740,741,742,743,744,745,746,747,
|
||||
748,749,750,751,752,753,754,755,756,757,758,759,760,761,762,763,764,765,766,
|
||||
767,768,769,770,771,772,773,774,775,776,777,778,779,780,781,782,783,784,785,
|
||||
786,787,788,789,790,791,792,793,794,795,796,797,798,799,800,801,802,803,804,
|
||||
805,806,807,808,809,810,811,812,813,814,815,816,817,818,819,820,821,822,823,
|
||||
824,825,826,827,828,829,830,831,832,833,834,835,836,837,838,839,840,841,842,
|
||||
843,844,845,846,847,848,849,850,851,852,853,854,855,856,857,858,859,860,861,
|
||||
862,863,864,865,866,867,868,869,870,871,872,873,874,875,876,877,878,879,880,
|
||||
881,882,883,884,885,886,887,888,889,890,891,892,893,894,895,896,897,898,899,
|
||||
900,901,902,903,904,905,906,907,908,909,910,911,912,913,914,915,916,917,918,
|
||||
919,920,921,922,923,924,925,926,927,928,929,930,931,932,933,934,935,936,937,
|
||||
938,939,940,941,942,943,944,945,946,947,948,949,950,951,952,953,954,955,956,
|
||||
957,958,959,960,961,962,963,964,965,966,967,968,969,970,971,972,973,974,975,
|
||||
976,977,978,979,980,981,982,983,984,985,986,987,988,989,990,991,992,993,994,
|
||||
995,996,997,998,999,1000,1001,1002,1003,1004,1005,1006,1007,1008,1009,1010,
|
||||
1011,1012,1013,1014,1015,1016,1017,1018,1019,1020,1021,1022,1023,1024,1025,
|
||||
1026,1027,1028,1029,1030,1031,1032,1033,1034,1035,1036,1037,1038,1039,1040,
|
||||
1041,1042,1043,1044,1045,1046,1047,1048,1049,1050,1051,1052,1053,1054,1055,
|
||||
1056,1057,1058,1059,1060,1061,1062,1063,1064,1065,1066,1067,1068,1069,1070,
|
||||
1071,1072,1073,1074,1075,1076,1077,1078,1079,1080,1081,1082,1083,1084,1085,
|
||||
1086,1087,1088,1089,1090,1091,1092,1093,1094,1095,1096,1097,1098,1099,1100,
|
||||
1101,1102,1103,1104,1105,1106,1107,1108,1109,1110,1111,1112,1113,1114,1115,
|
||||
1116,1117,1118,1119,1120,1121,1122,1123,1124,1125,1126,1127,1128,1129,1130,
|
||||
1131,1132,1133,1134,1135,1136,1137,1138,1139,1140,1141,1142,1143,1144,1145,
|
||||
1146,1147,1148,1149,1150,1151,1152,1153,1154,1155,1156,1157,1158,1159,1160,
|
||||
1161,1162,1163,1164,1165,1166,1167,1168,1169,1170,1171,1172,1173,1174,1175,
|
||||
1176,1177,1178,1179,1180,1181,1182,1183,1184,1185,1186,1187,1188,1189,1190,
|
||||
1191,1192,1193,1194,1195,1196,1197,1198,1199,1200,1201,1202,1203,1204,1205,
|
||||
1206,1207,1208,1209,1210,1211,1212,1213,1214,1215,1216,1217,1218,1219,1220,
|
||||
1221,1222,1223,1224,1225,1226,1227,1228,1229,1230,1231,1232,1233,1234,1235,
|
||||
1236,1237,1238,1239,1240,1241,1242,1243,1244,1245,1246,1247,1248,1249,1250,
|
||||
1251,1252,1253,1254,1255,1256,1257,1258,1259,1260,1261,1262,1263,1264,1265,
|
||||
1266,1267,1268,1269,1270,1271,1272,1273,1274,1275,1276,1277,1278,1279,1280,
|
||||
1281,1282,1283,1284,1285,1286,1287,1288,1289,1290,1291,1292,1293,1294,1295,
|
||||
1296,1297,1298,1299,1300,1301,1302,1303,1304,1305,1306,1307,1308,1309,1310,
|
||||
1311,1312,1313,1314,1315,1316,1317,1318,1319,1320,1321,1322,1323,1324,1325,
|
||||
1326,1327,1328,1329,1330,1331,1332,1333,1334,1335,1336,1337,1338,1339,1340,
|
||||
1341,1342,1343,1344,1345,1346,1347,1348,1349,1350,1351,1352,1353,1354,1355,
|
||||
1356,1357,1358,1359,1360,1361,1362,1363,1364,1365,1366,1367,1368,1369,1370,
|
||||
1371,1372,1373,1374,1375,1376,1377,1378,1379,1380,1381,1382,1383,1384,1385,
|
||||
1386,1387,1388,1389,1390,1391,1392,1393,1394,1395,1396,1397,1398,1399,1400,
|
||||
1401,1402,1403,1404,1405,1406,1407,1408,1409,1410,1411,1412,1413,1414,1415,
|
||||
1416,1417,1418,1419,1420,1421,1422,1423,1424,1425,1426,1427,1428,1429,1430,
|
||||
1431,1432,1433,1434,1435,1436,1437,1438,1439,1440,1441,1442,1443,1444,1445,
|
||||
1446,1447,1448,1449,1450,1451,1452,1453,1454,1455,1456,1457,1458,1459,1460,
|
||||
1461,1462,1463,1464,1465,1466,1467,1468,1469,1470,1471,1472,1473,1474,1475,
|
||||
1476,1477,1478,1479,1480,1481,1482,1483,1484,1485,1486,1487,1488,1489,1490,
|
||||
1491,1492,1493,1494,1495,1496,1497,1498,1499,1500,1501,1502,1503,1504,1505,
|
||||
1506,1507,1508,1509,1510,1511,1512,1513,1514,1515,1516,1517,1518,1519,1520,
|
||||
1521,1522,1523,1524,1525,1526,1527,1528,1529,1530,1531,1532,1533,1534,1535,
|
||||
1536,1537,1538,1539,1540,1541,1542,1543,1544,1545,1546,1547,1548,1549,1550,
|
||||
1551,1552,1553,1554,1555,1556,1557,1558,1559,1560,1561,1562,1563,1564,1565,
|
||||
1566,1567,1568,1569,1570,1571,1572,1573,1574,1575,1576,1577,1578,1579,1580,
|
||||
1581,1582,1583,1584,1585,1586,1587,1588,1589,1590,1591,1592,1593,1594,1595,
|
||||
1596,1597,1598,1599,1600,1601,1602,1603,1604,1605,1606,1607,1608,1609,1610,
|
||||
1611,1612,1613,1614,1615,1616,1617,1618,1619,1620,1621,1622,1623,1624,1625,
|
||||
1626,1627,1628,1629,1630,1631,1632,1633,1634,1635,1636,1637,1638,1639,1640,
|
||||
1641,1642,1643,1644,1645,1646,1647,1648,1649,1650,1651,1652,1653,1654,1655,
|
||||
1656,1657,1658,1659,1660,1661,1662,1663,1664,1665,1666,1667,1668,1669,1670,
|
||||
1671,1672,1673,1674,1675,1676,1677,1678,1679,1680,1681,1682,1683,1684,1685,
|
||||
1686,1687,1688,1689,1690,1691,1692,1693,1694,1695,1696,1697,1698,1699,1700,
|
||||
1701,1702,1703,1704,1705,1706,1707,1708,1709,1710,1711,1712,1713,1714,1715,
|
||||
1716,1717,1718,1719,1720,1721,1722,1723,1724,1725,1726,1727,1728,1729,1730,
|
||||
1731,1732,1733,1734,1735,1736,1737,1738,1739,1740,1741,1742,1743,1744,1745,
|
||||
1746,1747,1748,1749,1750,1751,1752,1753,1754,1755,1756,1757,1758,1759,1760,
|
||||
1761,1762,1763,1764,1765,1766,1767,1768,1769,1770,1771,1772,1773,1774,1775,
|
||||
1776,1777,1778,1779,1780,1781,1782,1783,1784,1785,1786,1787,1788,1789,1790,
|
||||
1791,1792,1793,1794,1795,1796,1797,1798,1799,1800,1801,1802,1803,1804,1805,
|
||||
1806,1807,1808,1809,1810,1811');
|
||||
DROP PROCEDURE proc29856;
|
||||
DROP TABLE t1;
|
||||
SET GLOBAL query_cache_size= default;
|
||||
|
||||
# End of 5.0 tests
|
||||
|
|
|
|||
156
sql/sp_head.cc
156
sql/sp_head.cc
|
|
@ -767,7 +767,8 @@ int cmp_splocal_locations(Item_splocal * const *a, Item_splocal * const *b)
|
|||
|
||||
|
||||
/*
|
||||
Replace thd->query{_length} with a string that one can write to the binlog.
|
||||
Replace thd->query{_length} with a string that one can write to the binlog
|
||||
or the query cache.
|
||||
|
||||
SYNOPSIS
|
||||
subst_spvars()
|
||||
|
|
@ -779,7 +780,9 @@ int cmp_splocal_locations(Item_splocal * const *a, Item_splocal * const *b)
|
|||
DESCRIPTION
|
||||
|
||||
The binlog-suitable string is produced by replacing references to SP local
|
||||
variables with NAME_CONST('sp_var_name', value) calls.
|
||||
variables with NAME_CONST('sp_var_name', value) calls. To make this string
|
||||
suitable for the query cache this function allocates some additional space
|
||||
for the query cache flags.
|
||||
|
||||
RETURN
|
||||
FALSE on success
|
||||
|
|
@ -792,80 +795,89 @@ static bool
|
|||
subst_spvars(THD *thd, sp_instr *instr, LEX_STRING *query_str)
|
||||
{
|
||||
DBUG_ENTER("subst_spvars");
|
||||
if (thd->prelocked_mode == NON_PRELOCKED && mysql_bin_log.is_open())
|
||||
|
||||
Dynamic_array<Item_splocal*> sp_vars_uses;
|
||||
char *pbuf, *cur, buffer[512];
|
||||
String qbuf(buffer, sizeof(buffer), &my_charset_bin);
|
||||
int prev_pos, res, buf_len;
|
||||
|
||||
/* Find all instances of Item_splocal used in this statement */
|
||||
for (Item *item= instr->free_list; item; item= item->next)
|
||||
{
|
||||
Dynamic_array<Item_splocal*> sp_vars_uses;
|
||||
char *pbuf, *cur, buffer[512];
|
||||
String qbuf(buffer, sizeof(buffer), &my_charset_bin);
|
||||
int prev_pos, res;
|
||||
|
||||
/* Find all instances of Item_splocal used in this statement */
|
||||
for (Item *item= instr->free_list; item; item= item->next)
|
||||
if (item->is_splocal())
|
||||
{
|
||||
if (item->is_splocal())
|
||||
{
|
||||
Item_splocal *item_spl= (Item_splocal*)item;
|
||||
if (item_spl->pos_in_query)
|
||||
sp_vars_uses.append(item_spl);
|
||||
}
|
||||
Item_splocal *item_spl= (Item_splocal*)item;
|
||||
if (item_spl->pos_in_query)
|
||||
sp_vars_uses.append(item_spl);
|
||||
}
|
||||
if (!sp_vars_uses.elements())
|
||||
DBUG_RETURN(FALSE);
|
||||
|
||||
/* Sort SP var refs by their occurences in the query */
|
||||
sp_vars_uses.sort(cmp_splocal_locations);
|
||||
|
||||
/*
|
||||
Construct a statement string where SP local var refs are replaced
|
||||
with "NAME_CONST(name, value)"
|
||||
*/
|
||||
qbuf.length(0);
|
||||
cur= query_str->str;
|
||||
prev_pos= res= 0;
|
||||
for (Item_splocal **splocal= sp_vars_uses.front();
|
||||
splocal < sp_vars_uses.back(); splocal++)
|
||||
{
|
||||
Item *val;
|
||||
|
||||
char str_buffer[STRING_BUFFER_USUAL_SIZE];
|
||||
String str_value_holder(str_buffer, sizeof(str_buffer),
|
||||
&my_charset_latin1);
|
||||
String *str_value;
|
||||
|
||||
/* append the text between sp ref occurences */
|
||||
res|= qbuf.append(cur + prev_pos, (*splocal)->pos_in_query - prev_pos);
|
||||
prev_pos= (*splocal)->pos_in_query + (*splocal)->m_name.length;
|
||||
|
||||
/* append the spvar substitute */
|
||||
res|= qbuf.append(STRING_WITH_LEN(" NAME_CONST('"));
|
||||
res|= qbuf.append((*splocal)->m_name.str, (*splocal)->m_name.length);
|
||||
res|= qbuf.append(STRING_WITH_LEN("',"));
|
||||
res|= (*splocal)->fix_fields(thd, (Item **) splocal);
|
||||
|
||||
if (res)
|
||||
break;
|
||||
|
||||
val= (*splocal)->this_item();
|
||||
DBUG_PRINT("info", ("print %p", val));
|
||||
str_value= sp_get_item_value(thd, val, &str_value_holder);
|
||||
if (str_value)
|
||||
res|= qbuf.append(*str_value);
|
||||
else
|
||||
res|= qbuf.append(STRING_WITH_LEN("NULL"));
|
||||
res|= qbuf.append(')');
|
||||
if (res)
|
||||
break;
|
||||
}
|
||||
res|= qbuf.append(cur + prev_pos, query_str->length - prev_pos);
|
||||
if (res)
|
||||
DBUG_RETURN(TRUE);
|
||||
|
||||
if (!(pbuf= thd->strmake(qbuf.ptr(), qbuf.length())))
|
||||
DBUG_RETURN(TRUE);
|
||||
|
||||
thd->query= pbuf;
|
||||
thd->query_length= qbuf.length();
|
||||
}
|
||||
if (!sp_vars_uses.elements())
|
||||
DBUG_RETURN(FALSE);
|
||||
|
||||
/* Sort SP var refs by their occurences in the query */
|
||||
sp_vars_uses.sort(cmp_splocal_locations);
|
||||
|
||||
/*
|
||||
Construct a statement string where SP local var refs are replaced
|
||||
with "NAME_CONST(name, value)"
|
||||
*/
|
||||
qbuf.length(0);
|
||||
cur= query_str->str;
|
||||
prev_pos= res= 0;
|
||||
for (Item_splocal **splocal= sp_vars_uses.front();
|
||||
splocal < sp_vars_uses.back(); splocal++)
|
||||
{
|
||||
Item *val;
|
||||
|
||||
char str_buffer[STRING_BUFFER_USUAL_SIZE];
|
||||
String str_value_holder(str_buffer, sizeof(str_buffer),
|
||||
&my_charset_latin1);
|
||||
String *str_value;
|
||||
|
||||
/* append the text between sp ref occurences */
|
||||
res|= qbuf.append(cur + prev_pos, (*splocal)->pos_in_query - prev_pos);
|
||||
prev_pos= (*splocal)->pos_in_query + (*splocal)->m_name.length;
|
||||
|
||||
/* append the spvar substitute */
|
||||
res|= qbuf.append(STRING_WITH_LEN(" NAME_CONST('"));
|
||||
res|= qbuf.append((*splocal)->m_name.str, (*splocal)->m_name.length);
|
||||
res|= qbuf.append(STRING_WITH_LEN("',"));
|
||||
res|= (*splocal)->fix_fields(thd, (Item **) splocal);
|
||||
|
||||
if (res)
|
||||
break;
|
||||
|
||||
val= (*splocal)->this_item();
|
||||
DBUG_PRINT("info", ("print %p", val));
|
||||
str_value= sp_get_item_value(thd, val, &str_value_holder);
|
||||
if (str_value)
|
||||
res|= qbuf.append(*str_value);
|
||||
else
|
||||
res|= qbuf.append(STRING_WITH_LEN("NULL"));
|
||||
res|= qbuf.append(')');
|
||||
if (res)
|
||||
break;
|
||||
}
|
||||
res|= qbuf.append(cur + prev_pos, query_str->length - prev_pos);
|
||||
if (res)
|
||||
DBUG_RETURN(TRUE);
|
||||
|
||||
/*
|
||||
Allocate additional space at the end of the new query string for the
|
||||
query_cache_send_result_to_client function.
|
||||
*/
|
||||
buf_len= qbuf.length() + thd->db_length + 1 + QUERY_CACHE_FLAGS_SIZE + 1;
|
||||
if ((pbuf= alloc_root(thd->mem_root, buf_len)))
|
||||
{
|
||||
memcpy(pbuf, qbuf.ptr(), qbuf.length());
|
||||
pbuf[qbuf.length()]= 0;
|
||||
}
|
||||
else
|
||||
DBUG_RETURN(TRUE);
|
||||
|
||||
thd->query= pbuf;
|
||||
thd->query_length= qbuf.length();
|
||||
|
||||
DBUG_RETURN(FALSE);
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue