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Overview
| Comment: | Fix a NULL pointer dereference after a syntax error that can occur as a result of check-in [6b2ff26c25bb9da3] yesterday. This problem was discovered by the OSSFuzz. |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
d49afb8f9804e96662d1e3cadc4c6643 |
| User & Date: | drh 2017-12-24 18:56:28.786 |
Context
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2017-12-25
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| 13:43 | Fix an assertion fault on a syntax error input caused by check-in [6b2ff26c25bb9da3]. Problem discovered by OSSFuzz. (check-in: 90d6e4f10d user: drh tags: trunk) | |
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2017-12-24
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| 18:56 | Fix a NULL pointer dereference after a syntax error that can occur as a result of check-in [6b2ff26c25bb9da3] yesterday. This problem was discovered by the OSSFuzz. (check-in: d49afb8f98 user: drh tags: trunk) | |
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2017-12-23
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| 14:39 | Simplification to the error handling logic in the extension loader. (check-in: 07c773148d user: drh tags: trunk) | |
Changes
Changes to src/build.c.
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assert(pParse->nTab==1);
sqlite3MayAbort(pParse);
sqlite3VdbeAddOp3(v, OP_OpenWrite, 1, pParse->regRoot, iDb);
sqlite3VdbeChangeP5(v, OPFLAG_P2ISREG);
pParse->nTab = 2;
addrTop = sqlite3VdbeCurrentAddr(v) + 1;
sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, addrTop);
if( pParse->nErr ) return;
pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect);
if( pSelTab==0 ) return;
assert( p->aCol==0 );
p->nCol = pSelTab->nCol;
p->aCol = pSelTab->aCol;
pSelTab->nCol = 0;
pSelTab->aCol = 0;
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Changes to test/colname.test.
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do_test colname-9.310 {
execsql2 {SELECT BBb FROM (SELECT aaa AS Bbb FROM t1)}
} {Bbb 123}
do_execsql_test colname-9.320 {
CREATE TABLE t2 AS SELECT BBb FROM (SELECT aaa AS Bbb FROM t1);
SELECT name FROM pragma_table_info('t2');
} {Bbb}
# Issue detected by clusterfuzz on 2017-12-24 (Christmas Eve)
# caused by check-in https://sqlite.org/src/info/6b2ff26c25
#
# Prior to being fixed, the following CREATE TABLE was dereferencing
# a NULL pointer and segfaulting.
#
do_catchsql_test colname-9.400 {
CREATE TABLE t4 AS SELECT #0;
} {1 {near "#0": syntax error}}
# Make sure the quotation marks get removed from the column names
# when constructing a new table from an aggregate SELECT.
# Email from Juergen Palm on 2017-07-11.
#
do_execsql_test colname-10.100 {
|
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