Bug 729012

Several problems related to debuginfo were found in the postgresql-8.4.7-2.el6 package. These issues might affect crash analysis done by Automatic Bug Reporting Tool and its retrace server, and also prevent proper debugging of crashes via GDB.

Debuginfo symbolic link pointing to another path
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Debuginfo package includes a symbolic link to each binary that has the debugging symbols stored there. For postgresql, one symbolic link does not point to the right binary, and that makes it impossible to use build ids from a coredump to get a list of packages required by it. Usually, this is a packaging error caused usually by placing identical binary into several locations instead of creating a symlink. If one copy of the binary is SUID/SGID, it is not possible to use symlink. You can add a dependency on bug #727872 and rebuild postgresql when that bug is fixed.

affected binary: /usr/lib/pgsql/test/regress/pg_regress
affected package: postgresql-test-8.4.7-2.el6.i686
referenced binary: /usr/lib/pgsql/pgxs/src/test/regress/pg_regress
referenced package: postgresql-devel-8.4.7-2.el6.i686
debuginfo symlink: /usr/lib/debug/.build-id/d3/e0e641035e9c7cfd8dafeaed34f677eaf607a6

This issue has been solved in Fedora by /usr/lib/rpm/find-debuginfo.sh creating additional symlinks for identical binaries. However, symlinks should be used instead of duplicating a binary when possible.

Debuginfo missing for binaries
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Debuginfo files for some binaries are not present in the debuginfo package. This might be caused by:
 - binary being compiled without debugging information
 - debugging information being removed from the binary by a build script
 - rpmbuild failing to extract debugging information from a binary in a buildroot because of permissions (eg. suid binaries, binaries without executable flag set)

List of binaries without corresponding debuginfo file:
- affected binary: /usr/lib/pgsql/test/regress/autoinc.so
  affected package: postgresql-test-8.4.7-2.el6.i686
  binary doesn't contain debug sections (it was probably stripped)
  affected binary file mode: 100755
- affected binary: /usr/lib/pgsql/test/regress/regress.so
  affected package: postgresql-test-8.4.7-2.el6.i686
  binary doesn't contain debug sections (it was probably stripped)
  affected binary file mode: 100755
- affected binary: /usr/lib/pgsql/test/regress/refint.so
  affected package: postgresql-test-8.4.7-2.el6.i686
  binary doesn't contain debug sections (it was probably stripped)
  affected binary file mode: 100755

This issue can be investigated by using eu-readelf tool from the elfutils package. Use `eu-readelf --notes /path/to/binary` to get build ID of a binary. Then check that the debuginfo package does not contain /usr/lib/debug/.build-id/<aa>/<bbbbbbbb>, where <aa> are the first two chars of the build ID, and <bbbbbbbb> is the rest of it. It should be a symlink pointing back to the binary.

(This bug was detected and filed by a script.)