BugOrBroken exception when replacing a value with a substitution

[dm3]

Given the config below, we want to make sure that app-test.component entry doesn't get merged with the app.component entry. To achieve this we use the reset-hack, resetting the app-test.component to a value of a different type and reassigning to the correct value:

test {
    component {
        type = test
        properties {
           url = test
        }
    }
}

app {
   component {
       type = app
       properties {
          host = prod
       }
   }
}

app-prod = ${app} {
    component.value = app-prod
}

app-test = ${app} {
    component = reset, component = ${test.component}
}

loading the above config results in:

om.typesafe.config.ConfigException$BugOrBroken: SimpleConfigObject.replaceChild did not find SimpleConfigObject({"component":"reset","component":${test.component}}) in SimpleConfigObject({"app":{"component":{"properties":{"host":"prod"},"type":"app"}},"app-prod":${app}{"component":{"value":"app-prod"}},"app-test":${app}{"component":"reset","component":${test.component}}})

The config loads fine if no substitution is performed on the app-test.component assignment after reset.

[havocp]

Thanks for the report! It fails here as you say with this test case:

    @Test
    def issue356(): Unit = {
        val s = """
test {
    component {
        type = test
        properties {
           url = test
        }
    }
}

app {
   component {
       type = app
       properties {
          host = prod
       }
   }
}

app-prod = ${app} {
    component.value = app-prod
}

app-test = ${app} {
    component = reset, component = ${test.component}
}
"""
        ConfigFactory.parseString(s).resolve()
    }

I can make it work by doing this, so you may have a workaround available:

tmp = {
    component = reset, component = ${test.component}
}

app-test = ${app} ${tmp}