Bug 842583

Summary:	ecj - compile with -target 1.5 or greater
Product:	[Fedora] Fedora	Reporter:	Mikolaj Izdebski <mizdebsk>
Component:	ecj	Assignee:	Jon VanAlten <jon.vanalten>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	akurtako, dbhole, overholt
Target Milestone:	---
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Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-10-23 01:27:05 UTC	Type:	---
Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	842394

Description Mikolaj Izdebski 2012-07-24 09:22:54 UTC

Package ecj appears to be using Java generics,
but generates class files in format older than 49.0,
which corresponds to J2SE 5.0, in which generics were introduced.

Please update this package to generate classes in format 49.0 or
above. This corresponds to -target 1.5 option of javac (or ecj).

For more information, see bug #842394

Comment 1 Jon VanAlten 2012-10-23 01:27:05 UTC

I've reviewed ecj package in detail and I believe this is a false positive.  There are two very good reasons for this false positive.  First, in the sources there are java files which use generics.  However, these are files not needed for the package and are removed during rpm build (they are never compiled; I didn't dig too deep but I believe these have mainly to do with integrating this with eclipse itself, but this package exists only to provide ecj executable separately from eclipse).  Second, in the files remaining there are quite a bit of references in the comments to generics, documenting the compiler implementation.  I find it interesting that ecj is able to compile java code with generics, without using them in its own source code.  Since this is false positive, I'm closing this bug.