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Fix a buffer overread during compilation of CREATE VIRTUAL TABLE statements that featured an explicit database name but no virtual table arguments. For example, "CREATE VIRTUAL TABLE main.ft USING fts4".

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FossilOrigin-Name: f095cde579e7417306e11b5c1d2dd90b6bb547d5
This commit is contained in:
dan
2014-11-27 11:36:36 +00:00
parent 3f2d22e1a3
commit d89b834f54
5 changed files with 74 additions and 12 deletions
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7
src/vtab.c
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@@ -332,7 +332,12 @@ void sqlite3VtabBeginParse(
addModuleArgument(db, pTable, sqlite3NameFromToken(db, pModuleName));
addModuleArgument(db, pTable, 0);
addModuleArgument(db, pTable, sqlite3DbStrDup(db, pTable->zName));
pParse->sNameToken.n = (int)(&pModuleName->z[pModuleName->n] - pName1->z);
assert( (pParse->sNameToken.z==pName2->z && pName2->z!=0)
|| (pParse->sNameToken.z==pName1->z && pName2->z==0)
);
pParse->sNameToken.n = (int)(
&pModuleName->z[pModuleName->n] - pParse->sNameToken.z
);
#ifndef SQLITE_OMIT_AUTHORIZATION
/* Creating a virtual table invokes the authorization callback twice.