SLF4J / SLF4J-495 [Open] Binary compatibility between release and alpha version ============================== Here's what changed in this issue in the last few minutes. This issue has been created This issue is now assigned to you. View or comment on issue using this link https://jira.qos.ch/browse/SLF4J-495 ============================== Issue created ------------------------------ Alexander Krimm created this issue on 15/Jul/20 3:24 PM Summary: Binary compatibility between release and alpha version Issue Type: Bug Affects Versions: 2.0.0-alpha0, 2.0.0-alpha1 Assignee: SLF4J developers list Components: Core API Created: 15/Jul/20 3:24 PM Environment: Linux 64bit, openjdk 11.0.4 SLF4J: 2.0.0-alpha0 (compile-time), 1.7.30 (run-time) Logging Provider: log4j-slf4j-impl 1.13.3 Labels: configuration documentation Priority: Major Reporter: Alexander Krimm Description: As I understand [http://slf4j.org/manual.html#compatibility] it should be possible to compile a library against slf4j-api 2.0.0-alpha0 and at runtime have slf4j-api-1.7.30.jar and a corresponding implementation e.g. log4j-slf4j-impl-1.13.3.jar on the classpath. However, when using the fluent api, this setup throws whenever a (fluent) Logging statement is hit: {code} java.lang.NoSuchMethodError: 'org.slf4j.spi.LoggingEventBuilder org.slf4j.Logger.atInfo()' {code}   Is binary compatibility restricted to the same major version number, are alpha versions excluded? Effectively this seems to force all projects which have dependencies using the Fluent Logging API to also use the alpha logging API.   I really like the the new API, so I hope there's some way to set this up correctly. ============================== This message was sent by Atlassian Jira (v8.8.0#808000-sha1:e2c7e59)