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Bug 522581 - Cannot run ant build file from generic project
Summary: Cannot run ant build file from generic project
Status: VERIFIED FIXED
Alias: None
Product: JDT
Classification: Eclipse Project
Component: Debug (show other bugs)
Version: 4.7   Edit
Hardware: Other Linux
: P3 normal with 2 votes (vote)
Target Milestone: 4.7.2   Edit
Assignee: Sarika Sinha CLA
QA Contact:
URL:
Whiteboard:
Keywords:
: 526492 526539 527220 529440 (view as bug list)
Depends on:
Blocks:
 
Reported: 2017-09-21 09:23 EDT by Richard Evans CLA
Modified: 2018-02-09 05:23 EST (History)
13 users (show)

See Also:

Attachments
Screen grab showing error (13.37 KB, image/png)
2017-09-21 09:23 EDT, Richard Evans CLA 		no flags Details
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Description Richard Evans CLA 2017-09-21 09:23:46 EDT 
Created attachment 270288 [details]
Screen grab showing error

Create a new General Project (new Project -> General -> Project) named, for example, 'btest'.

In the top level of the new project, create an Ant build file build.xml containing, for example:

<project name="btest" default="hello" basedir=".">
  <target name="hello">
  </target>
</project>

In the Package Explorer, right click on build.xml and select Run As -> Ant Build

The build fails immediately with the error:

'Launching btest build.xml' has encountered a problem.

Launch configuration btest build.xml references non-existing project btest.

(see attached screen grab).

Also fails when run from External Tools menu.

This worked as recently as Eclipse 4.6.3.
Comment 1 Sarika Sinha CLA 2017-09-26 00:40:34 EDT 
Thanks for reporting, I am able to reproduce this.
Looks like the impact of moving to new Ant version.
We are basically getting 
	at java.net.DualStackPlainSocketImpl.waitForNewConnection(Native Method)
	at java.net.DualStackPlainSocketImpl.socketAccept(Unknown Source)
	at java.net.AbstractPlainSocketImpl.accept(Unknown Source)
	at java.net.PlainSocketImpl.accept(Unknown Source)
	at java.net.ServerSocket.implAccept(Unknown Source)
	at java.net.ServerSocket.accept(Unknown Source)
	at org.eclipse.ant.internal.launching.launchConfigurations.RemoteAntBuildListener$ServerConnection.run(RemoteAntBuildListener.java:89)
Comment 2 Richard Evans CLA 2017-09-27 05:07:34 EDT 
Interesting if related to ant version - ant builds work fine from Java projects, it seems to be the Eclipse project type which is a problem.
Comment 3 Marcus Storre CLA 2017-10-16 06:09:24 EDT 
I can confirm that this bug occured, when updating from 4.7.1 to 4.7.1a
Comment 4 Sarika Sinha CLA 2017-10-16 07:48:30 EDT 
(In reply to Marcus Storre from comment #3)
> I can confirm that this bug occured, when updating from 4.7.1 to 4.7.1a

You are using Java 9?
Comment 5 Marcus Storre CLA 2017-10-16 08:25:09 EDT 
Using Java 8u144
Comment 6 Dominique Gibeau CLA 2017-10-17 10:59:45 EDT 
Got the same problem in one of my PHP projects right after updating to 4.7.1a. Reverted to 4.7.1 and it's working again.
Comment 7 Sarika Sinha CLA 2017-10-18 03:21:07 EDT 
As a workaround, you can run the ant file in the "Same JRE as workspace".
It works fine.
Comment 8 Sarika Sinha CLA 2017-10-28 01:35:10 EDT 
*** Bug 526539 has been marked as a duplicate of this bug. ***
Comment 9 Sarika Sinha CLA 2017-10-28 01:38:54 EDT 
As we have workaround to run in the same JRE.
Comment 10 Sarika Sinha CLA 2017-10-28 01:39:14 EDT 
*** Bug 526492 has been marked as a duplicate of this bug. ***
Comment 11 Eclipse Genie CLA 2017-10-30 02:19:47 EDT 
New Gerrit change created: https://git.eclipse.org/r/110712
Comment 12 Sarika Sinha CLA 2017-10-30 02:50:31 EDT 
Moving to JDT Debug (Launching).
Comment 14 Eclipse Genie CLA 2017-10-31 00:16:33 EDT 
New Gerrit change created: https://git.eclipse.org/r/110782
Comment 15 Eclipse Genie CLA 2017-10-31 01:18:11 EDT 
Gerrit change https://git.eclipse.org/r/110782 was merged to [R4_7_maintenance].
Commit: http://git.eclipse.org/c/jdt/eclipse.jdt.debug.git/commit/?id=14f3c86acf31fe752b63f40fc5de3b50270adbbb
Comment 16 Sarika Sinha CLA 2017-11-08 23:04:49 EST 
Eclipse SDK
Version: Oxygen.2 (4.7.2)
Build id: M20171108-1700
OS: Windows 7, v.6.1, x86_64 / win32
Comment 17 Sarika Sinha CLA 2017-11-13 22:42:22 EST 
*** Bug 527220 has been marked as a duplicate of this bug. ***
Comment 18 Sarika Sinha CLA 2018-01-05 06:02:10 EST 
*** Bug 529440 has been marked as a duplicate of this bug. ***
Comment 19 Thomas Jacob CLA 2018-02-09 05:23:48 EST 
As an alternative work-around, you can change the project containing the build.xml to a Java project, by adding <nature>org.eclipse.jdt.core.javanature</nature> to the list of <natures> in the .project file, and then restarting Eclipse.