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libdm: check for empty aux_data in _parse_aux_data_group()

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If after extracting stats arguments and group tags nothing remains
of aux_data but '-' set the region->aux_data field to the empty
string to match behaviour for non-grouped regions.
This commit is contained in:
Bryn M. Reeves 2016-07-06 16:29:06 +01:00
parent c1a66d4fc6
commit bf1dfea393
1 changed files with 1 additions and 1 deletions
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libdm/libdm-stats.c
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@ -692,7 +692,7 @@ static int _parse_aux_data_group(struct dm_stats *dms,
}
/* separate group tag from user aux_data */
if (strlen(end))
if ((strlen(end) > 1) || strncmp(end, "-", 1))
c = dm_strdup(end);
else
c = dm_strdup("");