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x/net/ipv4: missing error handling in the Header.Marshal method #36525

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perillo opened this issue Jan 13, 2020 · 1 comment
Open

x/net/ipv4: missing error handling in the Header.Marshal method #36525

perillo opened this issue Jan 13, 2020 · 1 comment
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@perillo
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perillo commented Jan 13, 2020

In the ipv4.Header.Marshal method, the code does not handle the possible error returned by h.Src.To4(). On the other hand, the possible error returned by h.Dst.To4() is handled correctly.

Another small issue is that the slice returned by To4() is still sliced (ip[:net.IPv4len]); this is unnecessary.

See https://github.com/golang/net/blob/master/ipv4/header.go#L92
@gopherbot gopherbot added this to the Unreleased milestone Jan 13, 2020
@cagedmantis cagedmantis added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Jan 13, 2020
@cagedmantis cagedmantis modified the milestones: Unreleased, Backlog Jan 13, 2020
@cagedmantis
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/cc @mikioh @ianlancetaylor

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