mirrors/sqlite
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

In the query flattener, avoid invalidating an expression if an OOM occurs.

Browse Source 
This prevents problems in higher-level routines that might not check for
the OOM after processing a subquery.
dbsqlfuzz fb70fa8602421f87673e0670b0712ff2b5240ea0

FossilOrigin-Name: d564d8882ef18b55ebf93e838426b485281c7ebe3a9b321a2f984ed0f229cc25
This commit is contained in:
drh 2021-04-19 15:05:27 +00:00
parent 0a746cc528
commit 60b95335e2
3 changed files with 17 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
manifest
View File

@ -1,5 +1,5 @@
C Ensure\sthat\sall\srecords\sare\supdated\sby\ssetting\sthe\sOPFLAG_SAVEPOSITION\sflag\swhen\supdating\srecords\sas\spart\sof\sALTER\sTABLE\sDROP\sCOLUMN.
D 2021-04-18T05:30:39.861
C In\sthe\squery\sflattener,\savoid\sinvalidating\san\sexpression\sif\san\sOOM\soccurs.\nThis\sprevents\sproblems\sin\shigher-level\sroutines\sthat\smight\snot\scheck\sfor\nthe\sOOM\safter\sprocessing\sa\ssubquery.\ndbsqlfuzz\sfb70fa8602421f87673e0670b0712ff2b5240ea0
D 2021-04-19T15:05:27.545
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@ -542,7 +542,7 @@ F src/printf.c 78fabb49b9ac9a12dd1c89d744abdc9b67fd3205e62967e158f78b965a29ec4b
F src/random.c 80f5d666f23feb3e6665a6ce04c7197212a88384
F src/resolve.c e299d53c4077fc32bc63741b5b27fdf8a1328cb8e812b9fafb55441c4c73a80a
F src/rowset.c ba9515a922af32abe1f7d39406b9d35730ed65efab9443dc5702693b60854c92
F src/select.c ab7dcf61ffe21e51c4ed8df5f22aaff6473d27d19f62914f38ebcb30fe404c44
F src/select.c 8b466a1c0d48d2210e93b7af46f5586fb7f80ccc0bc0f9859a4a2a7038d18d47
F src/shell.c.in 9320b476fde0f7c46700e5695b69b435f1e46843a1513cdd187ac426cdbee016
F src/sqlite.h.in 18ec33e32001721fd4e9c4705a24a85dff04956ac2c0a21775058884ba845b09
F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
@ -1913,7 +1913,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 4ec9ef4bcd12bd9ba5e1a2424f75479070d12c25f1272548c6cf3f89be826b8c
R ad21a6d9a36497d430b1bdf7e1327f29
U dan
Z 9d80b290d00ddd51864fc31db6dbc49c
P 354a4db5cb769c6aed386f43ee26d7e42342e92f781eef100c09751dc5b51751
R d34f55f4a0ce3de7a5176125f81c3be7
U drh
Z ca72275528f30884ea5a49fdd0fac3b4

2
manifest.uuid
View File

@ -1 +1 @@
354a4db5cb769c6aed386f43ee26d7e42342e92f781eef100c09751dc5b51751
d564d8882ef18b55ebf93e838426b485281c7ebe3a9b321a2f984ed0f229cc25

19
src/select.c
View File

@ -3627,10 +3627,11 @@ static Expr *substExpr(
}
testcase( ExprHasProperty(pCopy, EP_Subquery) );
pNew = sqlite3ExprDup(db, pCopy, 0);
if( pNew && pSubst->isLeftJoin ){
if( pNew==0 ) return pExpr;
if( pSubst->isLeftJoin ){
ExprSetProperty(pNew, EP_CanBeNull);
}
if( pNew && ExprHasProperty(pExpr,EP_FromJoin) ){
if( ExprHasProperty(pExpr,EP_FromJoin) ){
sqlite3SetJoinExpr(pNew, pExpr->iRightJoinTable);
}
sqlite3ExprDelete(db, pExpr);
@ -3638,15 +3639,13 @@ static Expr *substExpr(
/* Ensure that the expression now has an implicit collation sequence,
** just as it did when it was a column of a view or sub-query. */
if( pExpr ){
if( pExpr->op!=TK_COLUMN && pExpr->op!=TK_COLLATE ){
CollSeq *pColl = sqlite3ExprCollSeq(pSubst->pParse, pExpr);
pExpr = sqlite3ExprAddCollateString(pSubst->pParse, pExpr,
(pColl ? pColl->zName : "BINARY")
);
}
ExprClearProperty(pExpr, EP_Collate);
if( pExpr->op!=TK_COLUMN && pExpr->op!=TK_COLLATE ){
CollSeq *pColl = sqlite3ExprCollSeq(pSubst->pParse, pExpr);
pExpr = sqlite3ExprAddCollateString(pSubst->pParse, pExpr,
(pColl ? pColl->zName : "BINARY")
);
}
ExprClearProperty(pExpr, EP_Collate);
}
}
}else{