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config: only walk if non-nil

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This commit is contained in:
Mitchell Hashimoto 2014-08-11 21:55:47 -07:00
parent 2fd545bca1
commit 3e3be5e2a3
1 changed files with 7 additions and 5 deletions
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12
config/config.go
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@ -127,11 +127,13 @@ func (c *Config) Validate() error {
}
w := &interpolationWalker{F: fn}
if err := reflectwalk.Walk(v.Default, w); err == nil {
if interp {
errs = append(errs, fmt.Errorf(
"Variable '%s': cannot contain interpolations",
v.Name))
if v.Default != nil {
if err := reflectwalk.Walk(v.Default, w); err == nil {
if interp {
errs = append(errs, fmt.Errorf(
"Variable '%s': cannot contain interpolations",
v.Name))
}
}
}
}