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Description of problems:

1. The value of "ret" variable is not defined at these places in cr_read() in file compression_wrapper.c:
1152: if (cr_file->stat && ret != CR_CW_ERR)
1164:     return ret;

Solution:
Initialize "ret" variable to CR_CW_ERR value at the beginning of the function or set "ret" variable to CR_CW_ERR value before break at line 1138:

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2. There are resource leaks in function dump_merged_metadata() in file mergerepo.c.
Allocation of resources:
878: cr_ContentStat *pri_zck_stat = cr_contentstat_new(CR_CHECKSUM_SHA256, NULL);
879: cr_ContentStat *fil_zck_stat = cr_contentstat_new(CR_CHECKSUM_SHA256, NULL);
880: cr_ContentStat *oth_zck_stat = cr_contentstat_new(CR_CHECKSUM_SHA256, NULL);
These resources leaks on more places in the function.

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3. There is resource leak in cr_metadata_locate_and_load_xml() in file load_metadata.c.
Allocation:
673: ml = cr_locate_metadata(repopath, TRUE, &tmp_err);
It leaks at line 683.

Version-Release number of selected component (if applicable):
createrepo_c-0.15.1-1.el8

Created a PR here: https://github.com/rpm-software-management/createrepo_c/pull/199

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (createrepo_c bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2020:4700