This tiny example shows a bug when upgrading from Kotlin 1.2.10 to 1.2.20
When build with 1.2.20 this error occurs
Caused by: org.springframework.boot.context.properties.bind.BindException: Failed to bind properties under 'larmic' to de.larmic.kotlin.bug.Configuration
at org.springframework.boot.context.properties.bind.Binder.handleBindError(Binder.java:227)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:203)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:187)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:169)
at org.springframework.boot.context.properties.ConfigurationPropertiesBinder.bind(ConfigurationPropertiesBinder.java:77)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.postProcessBeforeInitialization(ConfigurationPropertiesBindingPostProcessor.java:167)
... 41 more
Caused by: org.springframework.boot.context.properties.bind.validation.BindValidationException
at org.springframework.boot.context.properties.bind.validation.ValidationBindHandler.throwBindValidationException(ValidationBindHandler.java:128)
at org.springframework.boot.context.properties.bind.validation.ValidationBindHandler.validate(ValidationBindHandler.java:116)
at org.springframework.boot.context.properties.bind.validation.ValidationBindHandler.validate(ValidationBindHandler.java:97)
at org.springframework.boot.context.properties.bind.validation.ValidationBindHandler.onFinish(ValidationBindHandler.java:88)
at org.springframework.boot.context.properties.bind.Binder.handleBindResult(Binder.java:213)
at org.springframework.boot.context.properties.bind.Binder.bind(Binder.java:200)
... 45 more
When build with 1.2.10 no error occurs
When removing validation no exception occurs but properties are not injected.
See bugs:
Workaround: add <kotlin.compiler.incremental>false</kotlin.compiler.incremental> to properties in pom.xml