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Overview
| Comment: | Fix misplaced testcase() macros from the previous check-in. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
3aed949a18a251c5795f21f0385c205a |
| User & Date: | drh 2018-02-10 02:31:30 |
Context
|
2018-02-12
| ||
| 13:30 | Fix a possible infinite loop in VACUUM that can come up when the schema has been carefully corrupted. Problem discovered by OSSFuzz. Test cases in TH3. check-in: 27754b74 user: drh tags: trunk | |
|
2018-02-10
| ||
| 17:41 | Add the start of the "zonefile" extension. check-in: c125b4c3 user: dan tags: zonefile | |
| 02:31 | Fix misplaced testcase() macros from the previous check-in. check-in: 3aed949a user: drh tags: trunk | |
|
2018-02-09
| ||
| 23:25 | Improve the performance of the built-in REPLACE() function in cases where it does many substitutions that make the string larger. OSSFuzz is reporting intermittant timeouts when running a test where it does a REPLACE() on a 930KB random blob. Perhaps this enhancement will fix that. check-in: fab2c2b0 user: drh tags: trunk | |
Changes
Changes to src/func.c.
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cntExpand = 0;
for(i=j=0; i<=loopLimit; i++){
if( zStr[i]!=zPattern[0] || memcmp(&zStr[i], zPattern, nPattern) ){
zOut[j++] = zStr[i];
}else{
if( nRep>nPattern ){
nOut += nRep - nPattern;
if( nOut-1>db->aLimit[SQLITE_LIMIT_LENGTH] ){
sqlite3_result_error_toobig(context);
sqlite3_free(zOut);
return;
}
testcase( nOut-1==db->aLimit[SQLITE_LIMIT_LENGTH] );
testcase( nOut-2==db->aLimit[SQLITE_LIMIT_LENGTH] );
cntExpand++;
if( (cntExpand&(cntExpand-1))==0 ){
/* Grow the size of the output buffer only on substitutions
** whose index is a power of two: 1, 2, 4, 8, 16, 32, ... */
u8 *zOld;
zOld = zOut;
zOut = sqlite3_realloc64(zOut, (int)nOut + (nOut - nStr - 1));
|
> > < < |
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cntExpand = 0;
for(i=j=0; i<=loopLimit; i++){
if( zStr[i]!=zPattern[0] || memcmp(&zStr[i], zPattern, nPattern) ){
zOut[j++] = zStr[i];
}else{
if( nRep>nPattern ){
nOut += nRep - nPattern;
testcase( nOut-1==db->aLimit[SQLITE_LIMIT_LENGTH] );
testcase( nOut-2==db->aLimit[SQLITE_LIMIT_LENGTH] );
if( nOut-1>db->aLimit[SQLITE_LIMIT_LENGTH] ){
sqlite3_result_error_toobig(context);
sqlite3_free(zOut);
return;
}
cntExpand++;
if( (cntExpand&(cntExpand-1))==0 ){
/* Grow the size of the output buffer only on substitutions
** whose index is a power of two: 1, 2, 4, 8, 16, 32, ... */
u8 *zOld;
zOld = zOut;
zOut = sqlite3_realloc64(zOut, (int)nOut + (nOut - nStr - 1));
|