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Clear CMSG_SPACE(sizeof(data)) in cmsghdr to appease valgrind. #7996

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merged 1 commit into from
Jul 1, 2019

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omoerbeek
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Short description

Valgrind complains if we don't clear the padding. It is debatable if that is right...

Tested to fix #7981: without this PR valgrind complains if run with local address 0.0.0.0, with this the complaints are gone.

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I have:

  • read the CONTRIBUTING.md document
  • compiled this code
  • tested this code
  • included documentation (including possible behaviour changes)
  • documented the code
  • added or modified regression test(s)
  • added or modified unit test(s)

@ahupowerdns
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looks good!

@omoerbeek omoerbeek merged commit 8547436 into PowerDNS:master Jul 1, 2019
@omoerbeek omoerbeek deleted the valgrind-memset-cmsg-space branch July 1, 2019 08:17
@Habbie Habbie mentioned this pull request Jul 1, 2019
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Habbie added a commit to Habbie/pdns that referenced this pull request Jul 1, 2019
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Investigate valgrind report wrt uninitalized mem in sendmsg
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