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Additional steps to make sure calls to sqlite3ExprToRegister() are sane.

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FossilOrigin-Name: 1c42d7176b228791f99bc9971d92a9ab67b1e2956ca4f8d934bd1a3e596d6c80
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drh 2024-06-28 18:07:10 +00:00
parent 076bd5758b
commit f13e2d22fe
3 changed files with 15 additions and 11 deletions
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12
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@ -1,5 +1,5 @@
C Do\snot\sconvert\san\sexpression\snode\sthat\sis\salready\sTK_REGISTER\sinto\sa\nnew\sTK_REGISTER.\s\sThis\sis\sa\sfollow-up\sto\s[663f5dd32d9db832]\sthat\sfixes\sa\nbug\sdiscovered\sby\sdbsqlfuzz.
D 2024-06-28T17:14:00.360
C Additional\ssteps\sto\smake\ssure\scalls\sto\ssqlite3ExprToRegister()\sare\ssane.
D 2024-06-28T18:07:10.142
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F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@ -705,7 +705,7 @@ F src/date.c 13dd752847afb32ed70510ad7345a5b9c841f51ad904dba5d010f1fa3a6a324e
F src/dbpage.c 80e46e1df623ec40486da7a5086cb723b0275a6e2a7b01d9f9b5da0f04ba2782
F src/dbstat.c 3b677254d512fcafd4d0b341bf267b38b235ccfddbef24f9154e19360fa22e43
F src/delete.c cb766727c78e715f9fb7ec8a7d03658ed2a3016343ca687acfcec9083cdca500
F src/expr.c af9c9242be0df17280faf36c9810339de9df3d7a64ac8d33a5190a1400086ee5
F src/expr.c 02652ae4e3d7147d252ae4dd16642251b09289e10ec7cb5e977c7185457e17f0
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# Remove this line to create a well-formed Fossil manifest.

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@ -1 +1 @@
fcb669cfaa8a59ca710504d5aaa1936f65a6da8ff13473ad84458f97a6fd1f49
1c42d7176b228791f99bc9971d92a9ab67b1e2956ca4f8d934bd1a3e596d6c80

12
src/expr.c
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@ -4270,10 +4270,14 @@ void sqlite3ExprCodeMove(Parse *pParse, int iFrom, int iTo, int nReg){
void sqlite3ExprToRegister(Expr *pExpr, int iReg){
Expr *p = sqlite3ExprSkipCollateAndLikely(pExpr);
if( NEVER(p==0) ) return;
p->op2 = p->op;
p->op = TK_REGISTER;
p->iTable = iReg;
ExprClearProperty(p, EP_Skip);
if( p->op==TK_REGISTER ){
assert( p->iTable==iReg );
}else{
p->op2 = p->op;
p->op = TK_REGISTER;
p->iTable = iReg;
ExprClearProperty(p, EP_Skip);
}
}
/*