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| author | drh <drh@noemail.net> | 2015-11-15 11:13:49 +0000 |
|---|---|---|
| committer | drh <drh@noemail.net> | 2015-11-15 11:13:49 +0000 |
| commit | f7ee8965a5f36fd6dbd9469784ab6e539cea950d (patch) | |
| tree | 819eb3288defc216e25f28d692bb912755e125a2 /src | |
| parent | 96ceaf8680363bb14919c04f3a2ae0c0054868f1 (diff) | |
| download | sqlite-f7ee8965a5f36fd6dbd9469784ab6e539cea950d.tar.gz sqlite-f7ee8965a5f36fd6dbd9469784ab6e539cea950d.zip | |
Fix the column name uniquifier so that it works with zero-length column names.
FossilOrigin-Name: 791761ebac26c82ab67bdf867117ec5b5d8b20b0
Diffstat (limited to 'src')
| -rw-r--r-- | src/select.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/select.c b/src/select.c index 2265d4c9f..126d4cc28 100644 --- a/src/select.c +++ b/src/select.c @@ -1651,8 +1651,10 @@ int sqlite3ColumnsFromExprList( cnt = 0; while( zName && sqlite3HashFind(&ht, zName)!=0 ){ nName = sqlite3Strlen30(zName); - for(j=nName-1; j>0 && sqlite3Isdigit(zName[j]); j--){} - if( zName[j]==':' ) nName = j; + if( nName>0 ){ + for(j=nName-1; j>0 && sqlite3Isdigit(zName[j]); j--){} + if( zName[j]==':' ) nName = j; + } zName = sqlite3MPrintf(db, "%.*z:%u", nName, zName, ++cnt); if( cnt>3 ) sqlite3_randomness(sizeof(cnt), &cnt); } |