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Merge pull request #53567 from maleck13/code-gen-nil-pointer-fix

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Automatic merge from submit-queue (batch tested with PRs 53567, 53197, 52944, 49593). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Address code-gen issue 7 nil pointer when incorrect pkg name

**What this PR does / why we need it**:
When using the code-gen tool, if the comments in the ```doc.go``` file has a misspelled pkg name, it ends with a nil pointer. This can be difficult to debug. This PR fixes that by logging an error and continuing. 
https://github.com/kubernetes/code-generator/issues/7

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:
I was not sure whether just exiting here would be correct behaviour as reading the code , I noticed in other places it continues if the pkg is nil.
Also perhaps I should use the ```glog.V(5).info```  ?

```release-note
`NONE`
```
This commit is contained in:
Kubernetes Submit Queue 2017-10-09 11:18:43 -07:00 committed by GitHub
commit bd9788f8f8
1 changed files with 5 additions and 1 deletions
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6
staging/src/k8s.io/code-generator/cmd/conversion-gen/generators/conversion.go
View File

@ -291,7 +291,11 @@ func Packages(context *generator.Context, arguments *args.GeneratorArgs) generat
// Make sure our peer-packages are added and fully parsed.
for _, pp := range peerPkgs {
context.AddDir(pp)
getManualConversionFunctions(context, context.Universe[pp], manualConversions)
p := context.Universe[pp]
if nil == p {
glog.Fatalf("failed to find pkg: %s", pp)
}
getManualConversionFunctions(context, p, manualConversions)
}
unsafeEquality := TypesEqual(memoryEquivalentTypes)