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Fix possible null pointer dereferences in the fts5_expr() scalar function.

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FossilOrigin-Name: c5d44143599f3fe98492b2b900fa3d77925c7be545096251055ceeab899a41f1
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dan
2019-12-09 02:20:37 +00:00
parent bf9d0996b9
commit c19e22f397
4 changed files with 25 additions and 11 deletions
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4
ext/fts5/fts5_expr.c
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@ -2516,10 +2516,12 @@ static void fts5ExprFunction(
azConfig[1] = "main";
azConfig[2] = "tbl";
for(i=3; iArg<nArg; iArg++){
azConfig[i++] = (const char*)sqlite3_value_text(apVal[iArg]);
const char *z = (const char*)sqlite3_value_text(apVal[iArg]);
azConfig[i++] = (z ? z : "");
}
zExpr = (const char*)sqlite3_value_text(apVal[0]);
if( zExpr==0 ) zExpr = "";
rc = sqlite3Fts5ConfigParse(pGlobal, db, nConfig, azConfig, &pConfig, &zErr);
if( rc==SQLITE_OK ){