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Fix a segfault in fts3 that may occur if the snippet, offsets or matchinfo functions are used in a query that does not contain a MATCH clause.

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FossilOrigin-Name: 14ab536a96f81595ab8c3dcd4b72075f1a827c8b
This commit is contained in:
dan
2010-02-10 05:33:17 +00:00
parent 309e6555a5
commit 56f2996b48
4 changed files with 52 additions and 20 deletions
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27
test/fts3snippet.test
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@ -432,7 +432,34 @@ foreach {DO_MALLOC_TEST enc} {
{2 2 1 3 3 3 6 3 0 0 0 2 3 2}
{2 2 1 3 3 3 6 3 0 0 0 2 3 2}
}]
# EVIDENCE-OF: R-56101-59725 If used within a SELECT that uses the
# "query by rowid" or "linear scan" strategies, then the snippet and
# offsets both return an an empty string, and the matchinfo function
# returns a blob value zero bytes in size.
#
set r 1000000 ;# A rowid that exists in table ft
do_select_test $T.10.0 { SELECT rowid FROM ft WHERE rowid = $r } $r
do_select_test $T.10.1 {
SELECT length(offsets(ft)), typeof(offsets(ft)) FROM ft;
} {0 text 0 text 0 text}
do_select_test $T.10.2 {
SELECT length(offsets(ft)), typeof(offsets(ft)) FROM ft WHERE rowid = $r
} {0 text}
do_select_test $T.10.3 {
SELECT length(snippet(ft)), typeof(snippet(ft)) FROM ft;
} {0 text 0 text 0 text}
do_select_test $T.10.4 {
SELECT length(snippet(ft)), typeof(snippet(ft)) FROM ft WHERE rowid = $r;
} {0 text}
do_select_test $T.10.5 {
SELECT length(matchinfo(ft)), typeof(matchinfo(ft)) FROM ft;
} {0 blob 0 blob 0 blob}
do_select_test $T.10.6 {
SELECT length(matchinfo(ft)), typeof(matchinfo(ft)) FROM ft WHERE rowid = $r
} {0 blob}
}
set sqlite_fts3_enable_parentheses 0
finish_test