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Avoid access of a Xapian iterator's object when there's nothing there.
This eliminates a crash when a message (either corrupted or a non-mail file that wasn't properly detected as not being mail) has no In-Reply-To header, (and so few terms that trying to skip to the prefix of the In-Reply-To terms actually brings us to the end of the termlist).
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1 changed files with 5 additions and 4 deletions
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@ -285,6 +285,7 @@ _notmuch_message_get_in_reply_to (notmuch_message_t *message)
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i = message->doc.termlist_begin ();
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i.skip_to (prefix);
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if (i != message->doc.termlist_end ())
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in_reply_to = *i;
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/* It's perfectly valid for a message to have no In-Reply-To
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@ -332,9 +333,9 @@ notmuch_message_get_thread_id (notmuch_message_t *message)
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return message->thread_id;
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i = message->doc.termlist_begin ();
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i.skip_to (prefix);
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if (i != message->doc.termlist_end ())
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id = *i;
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if (i == message->doc.termlist_end () || id[0] != *prefix)
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@ -466,7 +467,7 @@ notmuch_message_get_tags (notmuch_message_t *message)
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i.skip_to (prefix);
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while (1) {
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while (i != end) {
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tag = *i;
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if (tag.empty () || tag[0] != *prefix)
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