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core: fix crash when computed nested map given in module block

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This crash resulted because the type switch checked for either of two
types but the type assertion within it assumed only one of them.

A straightforward (if inelegant) fix is to simply duplicate the relevant
case block and change the type assertion, thus allowing the types to match
up in all cases.

This fixes #13297.
This commit is contained in:
Martin Atkins 2017-04-04 12:01:13 -07:00
parent 6980e14191
commit c1c5c9a2f6
1 changed files with 9 additions and 4 deletions
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13
terraform/eval_variable.go
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@ -174,9 +174,15 @@ func (n *EvalVariableBlock) setUnknownVariableValueForPath(path string) error {
// Otherwise find the correct point in the tree and then set to unknown
var current interface{} = n.VariableValues[pathComponents[0]]
for i := 1; i < len(pathComponents); i++ {
switch current.(type) {
case []interface{}, []map[string]interface{}:
tCurrent := current.([]interface{})
switch tCurrent := current.(type) {
case []interface{}:
index, err := strconv.Atoi(pathComponents[i])
if err != nil {
return fmt.Errorf("Cannot convert %s to slice index in path %s",
pathComponents[i], path)
}
current = tCurrent[index]
case []map[string]interface{}:
index, err := strconv.Atoi(pathComponents[i])
if err != nil {
return fmt.Errorf("Cannot convert %s to slice index in path %s",
@ -184,7 +190,6 @@ func (n *EvalVariableBlock) setUnknownVariableValueForPath(path string) error {
}
current = tCurrent[index]
case map[string]interface{}:
tCurrent := current.(map[string]interface{})
if val, hasVal := tCurrent[pathComponents[i]]; hasVal {
current = val
continue