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https://issues.apache.org/jira/browse/MCOMPILER-485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17492318#comment-17492318
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Daniel Widdis commented on MCOMPILER-485:
-----------------------------------------
Here's a quick reproducer project: [dbwiddis/foo: Minimal repository for
reproducing bugs (github.com)|https://github.com/dbwiddis/foo]
# Clone the project
# On windows, run ./mvnw.cmd clean verify
Result:
[INFO] --- maven-compiler-plugin:3.10.0:compile (default-compile) @ foo ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 2 source files to
C:\Users\dawiddis.REDMOND\git\foo\target\classes
[INFO]
[INFO] --- bnd-maven-plugin:6.1.0:bnd-process (default) @ foo ---
[ERROR] C:\Users\dawiddis.REDMOND\git\foo\pom.xml [0:0]: Classes found in the
wrong directory: \{foo/bar/package-info.class=foo\bar\package-info}
[
> Incorrect internal string format in generated package-info.class files on
> Windows
> ---------------------------------------------------------------------------------
>
> Key: MCOMPILER-485
> URL: https://issues.apache.org/jira/browse/MCOMPILER-485
> Project: Maven Compiler Plugin
> Issue Type: Bug
> Affects Versions: 3.10.0
> Environment: Windows, or any operating system with a file separator
> character other than a forward slash
> Reporter: Daniel Widdis
> Priority: Major
>
> In 3.10.0, a new feature to generate package-info classes was added in
> [[MCOMPILER-205] |https://github.com/apache/maven-compiler-plugin/pull/88]
> Unfortunately, the binary class file is incorrectly generated using Java's
> file toString() which uses a platform dependent file separator character: on
> Windows, these Strings contain a backslash. See [this
> line|https://github.com/gnodet/maven-compiler-plugin/blob/8521ef8fdd12cc0b85c1ace17114ed3d3ffd0b0c/src/main/java/org/apache/maven/plugin/compiler/AbstractCompilerMojo.java#L1356]
> which passes the platform-dependent file name (minus the root path and .java
> extension) to the ClassWriter.
> The Java class file specification (4.2.1) specifies the internal format: "In
> this internal form, the ASCII periods (.) that normally separate the
> identifiers which make up the binary name are replaced by ASCII forward
> slashes (/)."
> This invalid class file format causes problems in downstream plugins, e.g.,
> the bnd-maven-plugin fails with an error: Classes found in the wrong
> directory:
> \{oshi/jna/platform/unix/package-info.class=oshi\jna\platform\unix\package-info
> ... (and hundreds more) ... }
> Steps to reproduce:
> # Perform a build on any Windows machine using maven-compiler-plugin 3.10.0
> # Inspect any of the generated package-info.class files in target/classes
> using a text editor
> Expected behavior:
> Internal strings representing package names use forward slashes
> Observed behavior:
> Internal strings representing package names use backward slashes
>
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