From aa29c86e49377af479d697e4e046d55a3cf09265 Mon Sep 17 00:00:00 2001 From: dan Date: Thu, 25 Apr 2013 20:34:02 +0000 Subject: [PATCH] Rebalance FTS expressions after parsing to limit recursion during evaluation. Avoid recursion when deleting FTS expression trees. Enforce a limit on the depth of an expression tree. FossilOrigin-Name: f968d43f80cc2f236e7d09ba1e8278343e2b6976 --- ext/fts3/fts3_expr.c | 323 ++++++++++++++++++++++++++++++++++++----- manifest | 20 ++- manifest.uuid | 2 +- test/fts3expr3.test | 202 ++++++++++++++++++++++++++ test/permutations.test | 1 + 5 files changed, 504 insertions(+), 44 deletions(-) create mode 100644 test/fts3expr3.test diff --git a/ext/fts3/fts3_expr.c b/ext/fts3/fts3_expr.c index 04f38483a3..c767d7e71e 100644 --- a/ext/fts3/fts3_expr.c +++ b/ext/fts3/fts3_expr.c @@ -640,8 +640,10 @@ static int fts3ExprParse( } pNot->eType = FTSQUERY_NOT; pNot->pRight = p; + p->pParent = pNot; if( pNotBranch ){ pNot->pLeft = pNotBranch; + pNotBranch->pParent = pNot; } pNotBranch = pNot; p = pPrev; @@ -729,6 +731,7 @@ static int fts3ExprParse( pIter = pIter->pLeft; } pIter->pLeft = pRet; + pRet->pParent = pIter; pRet = pNotBranch; } } @@ -745,6 +748,223 @@ exprparse_out: return rc; } +/* +** Return SQLITE_ERROR if the maximum depth of the expression tree passed +** as the only argument is more than nMaxDepth. +*/ +static int fts3ExprCheckDepth(Fts3Expr *p, int nMaxDepth){ + int rc = SQLITE_OK; + if( p ){ + if( nMaxDepth==0 ){ + rc = SQLITE_ERROR; + }else{ + rc = fts3ExprCheckDepth(p->pLeft, nMaxDepth-1); + if( rc==SQLITE_OK ){ + rc = fts3ExprCheckDepth(p->pRight, nMaxDepth-1); + } + } + } + return rc; +} + +/* +** This function attempts to transform the expression tree at (*pp) to +** an equivalent but more balanced form. The tree is modified in place. +** If successful, SQLITE_OK is returned and (*pp) set to point to the +** new root expression node. +** +** nMaxDepth is the maximum allowable depth of the balanced sub-tree. +** +** Otherwise, if an error occurs, an SQLite error code is returned and +** expression (*pp) freed. +*/ +static int fts3ExprBalance(Fts3Expr **pp, int nMaxDepth){ + int rc = SQLITE_OK; /* Return code */ + Fts3Expr *pRoot = *pp; /* Initial root node */ + Fts3Expr *pFree = 0; /* List of free nodes. Linked by pParent. */ + int eType = pRoot->eType; /* Type of node in this tree */ + + if( nMaxDepth==0 ){ + rc = SQLITE_ERROR; + } + + if( rc==SQLITE_OK && (eType==FTSQUERY_AND || eType==FTSQUERY_OR) ){ + Fts3Expr **apLeaf; + apLeaf = (Fts3Expr **)sqlite3_malloc(sizeof(Fts3Expr *) * nMaxDepth); + if( 0==apLeaf ){ + rc = SQLITE_NOMEM; + }else{ + memset(apLeaf, 0, sizeof(Fts3Expr *) * nMaxDepth); + } + + if( rc==SQLITE_OK ){ + int i; + Fts3Expr *p; + + /* Set $p to point to the left-most leaf in the tree of eType nodes. */ + for(p=pRoot; p->eType==eType; p=p->pLeft){ + assert( p->pParent==0 || p->pParent->pLeft==p ); + assert( p->pLeft && p->pRight ); + } + + /* This loop runs once for each leaf in the tree of eType nodes. */ + while( 1 ){ + int iLvl; + Fts3Expr *pParent = p->pParent; /* Current parent of p */ + + assert( pParent==0 || pParent->pLeft==p ); + p->pParent = 0; + if( pParent ){ + pParent->pLeft = 0; + }else{ + pRoot = 0; + } + rc = fts3ExprBalance(&p, nMaxDepth-1); + if( rc!=SQLITE_OK ) break; + + for(iLvl=0; p && iLvlpLeft = apLeaf[iLvl]; + pFree->pRight = p; + pFree->pLeft->pParent = pFree; + pFree->pRight->pParent = pFree; + + p = pFree; + pFree = pFree->pParent; + p->pParent = 0; + apLeaf[iLvl] = 0; + } + } + if( p ){ + sqlite3Fts3ExprFree(p); + rc = SQLITE_ERROR; + break; + } + + /* If that was the last leaf node, break out of the loop */ + if( pParent==0 ) break; + + /* Set $p to point to the next leaf in the tree of eType nodes */ + for(p=pParent->pRight; p->eType==eType; p=p->pLeft); + + /* Remove pParent from the original tree. */ + assert( pParent->pParent==0 || pParent->pParent->pLeft==pParent ); + pParent->pRight->pParent = pParent->pParent; + if( pParent->pParent ){ + pParent->pParent->pLeft = pParent->pRight; + }else{ + assert( pParent==pRoot ); + pRoot = pParent->pRight; + } + + /* Link pParent into the free node list. It will be used as an + ** internal node of the new tree. */ + pParent->pParent = pFree; + pFree = pParent; + } + + if( rc==SQLITE_OK ){ + p = 0; + for(i=0; ipParent = 0; + }else{ + pFree->pRight = p; + pFree->pLeft = apLeaf[i]; + pFree->pLeft->pParent = pFree; + pFree->pRight->pParent = pFree; + + p = pFree; + pFree = pFree->pParent; + p->pParent = 0; + } + } + } + pRoot = p; + }else{ + /* An error occurred. Delete the contents of the apLeaf[] array + ** and pFree list. Everything else is cleaned up by the call to + ** sqlite3Fts3ExprFree(pRoot) below. */ + Fts3Expr *pDel; + for(i=0; ipParent; + sqlite3_free(pDel); + } + } + + assert( pFree==0 ); + sqlite3_free( apLeaf ); + } + } + + if( rc!=SQLITE_OK ){ + sqlite3Fts3ExprFree(pRoot); + pRoot = 0; + } + *pp = pRoot; + return rc; +} + +/* +** This function is similar to sqlite3Fts3ExprParse(), with the following +** differences: +** +** 1. It does not do expression rebalancing. +** 2. It does not check that the expression does not exceed the +** maximum allowable depth. +** 3. Even if it fails, *ppExpr may still be set to point to an +** expression tree. It should be deleted using sqlite3Fts3ExprFree() +** in this case. +*/ +static int fts3ExprParseUnbalanced( + sqlite3_tokenizer *pTokenizer, /* Tokenizer module */ + int iLangid, /* Language id for tokenizer */ + char **azCol, /* Array of column names for fts3 table */ + int bFts4, /* True to allow FTS4-only syntax */ + int nCol, /* Number of entries in azCol[] */ + int iDefaultCol, /* Default column to query */ + const char *z, int n, /* Text of MATCH query */ + Fts3Expr **ppExpr /* OUT: Parsed query structure */ +){ + static const int MAX_EXPR_DEPTH = 12; + int nParsed; + int rc; + ParseContext sParse; + + memset(&sParse, 0, sizeof(ParseContext)); + sParse.pTokenizer = pTokenizer; + sParse.iLangid = iLangid; + sParse.azCol = (const char **)azCol; + sParse.nCol = nCol; + sParse.iDefaultCol = iDefaultCol; + sParse.bFts4 = bFts4; + if( z==0 ){ + *ppExpr = 0; + return SQLITE_OK; + } + if( n<0 ){ + n = (int)strlen(z); + } + rc = fts3ExprParse(&sParse, z, n, ppExpr, &nParsed); + assert( rc==SQLITE_OK || *ppExpr==0 ); + + /* Check for mismatched parenthesis */ + if( rc==SQLITE_OK && sParse.nNest ){ + rc = SQLITE_ERROR; + } + + return rc; +} + /* ** Parameters z and n contain a pointer to and length of a buffer containing ** an fts3 query expression, respectively. This function attempts to parse the @@ -779,29 +999,20 @@ int sqlite3Fts3ExprParse( const char *z, int n, /* Text of MATCH query */ Fts3Expr **ppExpr /* OUT: Parsed query structure */ ){ - int nParsed; - int rc; - ParseContext sParse; - - memset(&sParse, 0, sizeof(ParseContext)); - sParse.pTokenizer = pTokenizer; - sParse.iLangid = iLangid; - sParse.azCol = (const char **)azCol; - sParse.nCol = nCol; - sParse.iDefaultCol = iDefaultCol; - sParse.bFts4 = bFts4; - if( z==0 ){ - *ppExpr = 0; - return SQLITE_OK; + static const int MAX_EXPR_DEPTH = 12; + int rc = fts3ExprParseUnbalanced( + pTokenizer, iLangid, azCol, bFts4, nCol, iDefaultCol, z, n, ppExpr + ); + + /* Rebalance the expression. And check that its depth does not exceed + ** MAX_EXPR_DEPTH. */ + if( rc==SQLITE_OK && *ppExpr ){ + rc = fts3ExprBalance(ppExpr, MAX_EXPR_DEPTH); + if( rc==SQLITE_OK ){ + rc = fts3ExprCheckDepth(*ppExpr, MAX_EXPR_DEPTH); + } } - if( n<0 ){ - n = (int)strlen(z); - } - rc = fts3ExprParse(&sParse, z, n, ppExpr, &nParsed); - - /* Check for mismatched parenthesis */ - if( rc==SQLITE_OK && sParse.nNest ){ - rc = SQLITE_ERROR; + if( rc!=SQLITE_OK ){ sqlite3Fts3ExprFree(*ppExpr); *ppExpr = 0; } @@ -810,16 +1021,40 @@ int sqlite3Fts3ExprParse( } /* -** Free a parsed fts3 query expression allocated by sqlite3Fts3ExprParse(). +** Free a single node of an expression tree. */ -void sqlite3Fts3ExprFree(Fts3Expr *p){ - if( p ){ - assert( p->eType==FTSQUERY_PHRASE || p->pPhrase==0 ); - sqlite3Fts3ExprFree(p->pLeft); - sqlite3Fts3ExprFree(p->pRight); - sqlite3Fts3EvalPhraseCleanup(p->pPhrase); - sqlite3_free(p->aMI); - sqlite3_free(p); +static void fts3FreeExprNode(Fts3Expr *p){ + assert( p->eType==FTSQUERY_PHRASE || p->pPhrase==0 ); + sqlite3Fts3EvalPhraseCleanup(p->pPhrase); + sqlite3_free(p->aMI); + sqlite3_free(p); +} + +/* +** Free a parsed fts3 query expression allocated by sqlite3Fts3ExprParse(). +** +** This function would be simpler if it recursively called itself. But +** that would mean passing a sufficiently large expression to ExprParse() +** could cause a stack overflow. +*/ +void sqlite3Fts3ExprFree(Fts3Expr *pDel){ + Fts3Expr *p; + assert( pDel==0 || pDel->pParent==0 ); + for(p=pDel; p && (p->pLeft||p->pRight); p=(p->pLeft ? p->pLeft : p->pRight)){ + assert( p->pParent==0 || p==p->pParent->pRight || p==p->pParent->pLeft ); + } + while( p ){ + Fts3Expr *pParent = p->pParent; + fts3FreeExprNode(p); + if( pParent && p==pParent->pLeft && pParent->pRight ){ + p = pParent->pRight; + while( p && (p->pLeft || p->pRight) ){ + assert( p==p->pParent->pRight || p==p->pParent->pLeft ); + p = (p->pLeft ? p->pLeft : p->pRight); + } + }else{ + p = pParent; + } } } @@ -871,6 +1106,9 @@ static int queryTestTokenizer( ** the returned expression text and then freed using sqlite3_free(). */ static char *exprToString(Fts3Expr *pExpr, char *zBuf){ + if( pExpr==0 ){ + return sqlite3_mprintf(""); + } switch( pExpr->eType ){ case FTSQUERY_PHRASE: { Fts3Phrase *pPhrase = pExpr->pPhrase; @@ -978,10 +1216,19 @@ static void fts3ExprTest( azCol[ii] = (char *)sqlite3_value_text(argv[ii+2]); } - rc = sqlite3Fts3ExprParse( - pTokenizer, 0, azCol, 0, nCol, nCol, zExpr, nExpr, &pExpr - ); + if( sqlite3_user_data(context) ){ + rc = sqlite3Fts3ExprParse( + pTokenizer, 0, azCol, 0, nCol, nCol, zExpr, nExpr, &pExpr + ); + assert( rc==SQLITE_OK || pExpr==0 ); + }else{ + rc = fts3ExprParseUnbalanced( + pTokenizer, 0, azCol, 0, nCol, nCol, zExpr, nExpr, &pExpr + ); + } + if( rc!=SQLITE_OK && rc!=SQLITE_NOMEM ){ + sqlite3Fts3ExprFree(pExpr); sqlite3_result_error(context, "Error parsing expression", -1); }else if( rc==SQLITE_NOMEM || !(zBuf = exprToString(pExpr, 0)) ){ sqlite3_result_error_nomem(context); @@ -1004,9 +1251,15 @@ exprtest_out: ** with database connection db. */ int sqlite3Fts3ExprInitTestInterface(sqlite3* db){ - return sqlite3_create_function( + int rc = sqlite3_create_function( db, "fts3_exprtest", -1, SQLITE_UTF8, 0, fts3ExprTest, 0, 0 ); + if( rc==SQLITE_OK ){ + rc = sqlite3_create_function(db, "fts3_exprtest_rebalance", + -1, SQLITE_UTF8, (void *)1, fts3ExprTest, 0, 0 + ); + } + return rc; } #endif diff --git a/manifest b/manifest index f702eb82f2..3441db13bd 100644 --- a/manifest +++ b/manifest @@ -1,5 +1,5 @@ -C Fix\sharmless\scompiler\swarnings. -D 2013-04-22T23:38:50.007 +C Rebalance\sFTS\sexpressions\safter\sparsing\sto\slimit\srecursion\sduring\sevaluation.\sAvoid\srecursion\swhen\sdeleting\sFTS\sexpression\strees.\sEnforce\sa\slimit\son\sthe\sdepth\sof\san\sexpression\stree. +D 2013-04-25T20:34:02.667 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f F Makefile.in 87591ea5bf7d6ed521ad42d5bc69c124debe11a5 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23 @@ -59,7 +59,7 @@ F ext/fts3/fts3.c 784aadfb4c2a217c3eb1feaecac924989f29728f F ext/fts3/fts3.h 3a10a0af180d502cecc50df77b1b22df142817fe F ext/fts3/fts3Int.h 352c8a83ee4c6a14ced1759a39dd890ab947cbe0 F ext/fts3/fts3_aux.c b02632f6dd0e375ce97870206d914ea6d8df5ccd -F ext/fts3/fts3_expr.c 6cb4410f87676ae633bd7923bbc78526cb839c4d +F ext/fts3/fts3_expr.c a01c0a2e00d0e848f7cdda3b4114fe03b560f59b F ext/fts3/fts3_hash.c 8dd2d06b66c72c628c2732555a32bc0943114914 F ext/fts3/fts3_hash.h 39cf6874dc239d6b4e30479b1975fe5b22a3caaf F ext/fts3/fts3_icu.c e319e108661147bcca8dd511cd562f33a1ba81b5 @@ -494,6 +494,7 @@ F test/fts3drop.test 1b906e293d6773812587b3dc458cb9e8f3f0c297 F test/fts3e.test 1f6c6ac9cc8b772ca256e6b22aaeed50c9350851 F test/fts3expr.test 5e745b2b6348499d9ef8d59015de3182072c564c F test/fts3expr2.test 18da930352e5693eaa163a3eacf96233b7290d1a +F test/fts3expr3.test aed4e71aa40ac1dcba860d1c43e7e23aa812eb1c F test/fts3fault.test cb72dccb0a3b9f730f16c5240f3fcb9303eb1660 F test/fts3fault2.test 3198eef2804deea7cac8403e771d9cbcb752d887 F test/fts3first.test dbdedd20914c8d539aa3206c9b34a23775644641 @@ -670,7 +671,7 @@ F test/pageropt.test 6b8f6a123a5572c195ad4ae40f2987007923bbd6 F test/pagesize.test 1dd51367e752e742f58e861e65ed7390603827a0 F test/pcache.test 065aa286e722ab24f2e51792c1f093bf60656b16 F test/pcache2.test a83efe2dec0d392f814bfc998def1d1833942025 -F test/permutations.test d2918e9ee6d0008292e5a70e90eed23b0440ca88 +F test/permutations.test 3d0bab9c49c1ec08b868059e30a3e1956f2162e2 F test/pragma.test 60d29cd3d8098a2c20bf4c072810f99e3bf2757a F test/pragma2.test 3a55f82b954242c642f8342b17dffc8b47472947 F test/printf.test ec9870c4dce8686a37818e0bf1aba6e6a1863552 @@ -1054,7 +1055,10 @@ F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4 F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381 F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac -P 49cfa14fceeef2d55b449eb927c283ce6f650c07 -R 83c630a254d9cc209b10e1a83d85002b -U drh -Z a7a8588b07b6fce1e57eced049fe41f1 +P 1a1cf5aa86734c832d845e07780262a178188d56 +R 821db2ca4e9de1c38e42323dffba1c12 +T *branch * fts3-expr-rebalance +T *sym-fts3-expr-rebalance * +T -sym-trunk * +U dan +Z 130034041e106884ea2e83109b05e05e diff --git a/manifest.uuid b/manifest.uuid index fa38fa5b2c..7824179050 100644 --- a/manifest.uuid +++ b/manifest.uuid @@ -1 +1 @@ -1a1cf5aa86734c832d845e07780262a178188d56 \ No newline at end of file +f968d43f80cc2f236e7d09ba1e8278343e2b6976 \ No newline at end of file diff --git a/test/fts3expr3.test b/test/fts3expr3.test new file mode 100644 index 0000000000..51a6adf58e --- /dev/null +++ b/test/fts3expr3.test @@ -0,0 +1,202 @@ +# 2009 January 1 +# +# The author disclaims copyright to this source code. In place of +# a legal notice, here is a blessing: +# +# May you do good and not evil. +# May you find forgiveness for yourself and forgive others. +# May you share freely, never taking more than you give. +# +#************************************************************************* +# This file implements regression tests for SQLite library. The +# focus of this script is testing the part of the FTS3 expression +# parser that rebalances large expressions. +# +# $Id: fts3expr2.test,v 1.2 2009/06/05 17:09:12 drh Exp $ +# + +set testdir [file dirname $argv0] +source $testdir/tester.tcl +source $testdir/malloc_common.tcl +set ::testprefix fts3expr3 + +# If SQLITE_ENABLE_FTS3 is defined, omit this file. +ifcapable !fts3 { + finish_test + return +} + +set sqlite_fts3_enable_parentheses 1 + +proc strip_phrase_data {L} { + if {[lindex $L 0] eq "PHRASE"} { + return [list P [lrange $L 3 end]] + } + return [list \ + [lindex $L 0] \ + [strip_phrase_data [lindex $L 1]] \ + [strip_phrase_data [lindex $L 2]] \ + ] +} +proc test_fts3expr2 {expr} { + strip_phrase_data [ + db one {SELECT fts3_exprtest_rebalance('simple', $expr, 'a', 'b', 'c')} + ] +} + +proc balanced_exprtree_structure {nEntry} { + set L [list] + for {set i 1} {$i <= $nEntry} {incr i} { + lappend L xxx + } + while {[llength $L] > 1} { + set N [list] + if {[llength $L] % 2} { + foreach {a b} [lrange $L 0 end-1] { lappend N [list AND $a $b] } + lappend N [lindex $L end] + } else { + foreach {a b} $L { lappend N [list AND $a $b] } + } + set L $N + } + return [lindex $L 0] +} + +proc balanced_and_tree {nEntry} { + set query [balanced_exprtree_structure $nEntry] + if {$query == "xxx"} { + return "P 1" + } + for {set i 1} {$i <= $nEntry} {incr i} { + regsub xxx $query "{P $i}" query + } + return $query +} + +proc random_tree_structure {nEntry bParen op} { + set query xxx + for {set i 1} {$i < $nEntry} {incr i} { + set x1 [expr int(rand()*4.0)] + set x2 [expr int(rand()*2.0)] + if {$x1==0 && $bParen} { + set query "($query)" + } + if {$x2} { + set query "xxx $op $query" + } else { + set query "$query $op xxx" + } + } + return $query +} + +proc random_and_query {nEntry {bParen 0}} { + set query [random_tree_structure $nEntry $bParen AND] + for {set i 1} {$i <= $nEntry} {incr i} { + regsub xxx $query $i query + } + return $query +} + +proc random_or_query {nEntry} { + set query [random_tree_structure $nEntry 1 OR] + for {set i 1} {$i <= $nEntry} {incr i} { + regsub xxx $query $i query + } + return $query +} + +proc random_andor_query {nEntry} { + set query [random_tree_structure $nEntry 1 AND] + for {set i 1} {$i <= $nEntry} {incr i} { + regsub xxx $query "([random_or_query $nEntry])" query + } + return $query +} + +proc balanced_andor_tree {nEntry} { + set tree [balanced_exprtree_structure $nEntry] + set node "{[balanced_and_tree $nEntry]}" + regsub -all AND $node OR node + regsub -all xxx $tree $node tree + return $tree +} + +# Test that queries like "1 AND 2 AND 3 AND 4..." are transformed to +# balanced trees by FTS. +# +for {set i 1} {$i < 100} {incr i} { + do_test 1.$i { + test_fts3expr2 [random_and_query $i] + } [balanced_and_tree $i] +} + +# Same again, except with parenthesis inserted at arbitrary points. +# +for {set i 1} {$i < 100} {incr i} { + do_test 2.$i { + test_fts3expr2 [random_and_query $i 1] + } [balanced_and_tree $i] +} + +# Now attempt to balance two AND trees joined by an OR. +# +for {set i 1} {$i < 100} {incr i} { + do_test 3.$i { + test_fts3expr2 "[random_and_query $i 1] OR [random_and_query $i 1]" + } [list OR [balanced_and_tree $i] [balanced_and_tree $i]] +} + +# Try trees of AND nodes with leaves that are themselves trees of OR nodes. +# +for {set i 2} {$i < 32} {incr i} { + do_test 3.$i { + test_fts3expr2 [random_andor_query $i] + } [balanced_andor_tree $i] +} + +# These exceed the depth limit. +# +for {set i 33} {$i < 40} {incr i} { + do_test 3.$i { + list [catch {test_fts3expr2 [random_andor_query $i]} msg] $msg + } {1 {Error parsing expression}} +} + +# This also exceeds the depth limit. +# +do_test 4.1 { + set q "1" + for {set i 2} {$i < 5000} {incr i} { + append q " AND $i" + } + list [catch {test_fts3expr2 $q} msg] $msg +} {1 {Error parsing expression}} + +proc create_toggle_tree {nDepth} { + if {$nDepth == 0} { return xxx } + set nNew [expr $nDepth-1] + if {$nDepth % 2} { + return "([create_toggle_tree $nNew]) OR ([create_toggle_tree $nNew])" + } + return "([create_toggle_tree $nNew]) AND ([create_toggle_tree $nNew])" +} + +do_test 4.2 { + list [catch {test_fts3expr2 [create_toggle_tree 17]} msg] $msg +} {1 {Error parsing expression}} + +set query [random_andor_query 12] +set result [balanced_andor_tree 12] +do_faultsim_test fts3expr3-fault-1 -faults oom-* -body { + test_fts3expr2 $::query +} -test { + faultsim_test_result [list 0 $::result] +} + +set sqlite_fts3_enable_parentheses 0 +finish_test + + + + diff --git a/test/permutations.test b/test/permutations.test index 9334fc49e6..3a3be27aff 100644 --- a/test/permutations.test +++ b/test/permutations.test @@ -186,6 +186,7 @@ test_suite "fts3" -prefix "" -description { fts3ak.test fts3al.test fts3am.test fts3an.test fts3ao.test fts3atoken.test fts3b.test fts3c.test fts3cov.test fts3d.test fts3defer.test fts3defer2.test fts3e.test fts3expr.test fts3expr2.test + fts3expr3.test fts3near.test fts3query.test fts3shared.test fts3snippet.test fts3sort.test fts3fault.test fts3malloc.test fts3matchinfo.test