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When an error occurs while rewriting the parser tree for window functions

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in the sqlite3WindowRewrite() routine, make sure that pParse->nErr is set,
and make sure that this shuts down any subsequent code generation that might
depend on the transformations that were implemented.  This fixes a problem
discovered by the Yongheng and Rui fuzzer.

FossilOrigin-Name: e2bddcd4c55ba3cbe0130332679ff4b048630d0ced9a8899982edb5a3569ba7f
This commit is contained in:
drh
2019-12-19 20:37:32 +00:00
parent 34ab941e5b
commit 8654186b02
5 changed files with 17 additions and 11 deletions
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6
src/window.c
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@@ -934,7 +934,7 @@ int sqlite3WindowRewrite(Parse *pParse, Select *p){
pTab = sqlite3DbMallocZero(db, sizeof(Table));
if( pTab==0 ){
return SQLITE_NOMEM;
return sqlite3ErrorToParser(db, SQLITE_NOMEM);
}
p->pSrc = 0;
@@ -1039,6 +1039,10 @@ int sqlite3WindowRewrite(Parse *pParse, Select *p){
sqlite3DbFree(db, pTab);
}
if( rc && pParse->nErr==0 ){
assert( pParse->db->mallocFailed );
return sqlite3ErrorToParser(pParse->db, SQLITE_NOMEM);
}
return rc;
}