https://issues.apache.org/bugzilla/show_bug.cgi?id=50960
Summary: read on System.in hangs for forked java task
Product: Ant
Version: 1.8.2
Platform: Macintosh
Status: NEW
Severity: regression
Priority: P2
Component: Core tasks
AssignedTo: [email protected]
ReportedBy: [email protected]
I just started using Ant 1.8.2 as it was installed along with the latest Java
Update for the Mac (JavaForMacOSX10.6Update4). Projects that worked fine with
Ant 1.8.1 no longer work in 1.8.2. The problem seems to be that a Java task
that forks a jvm hangs when it tries to read from System.in. Has anyone else
seen this problem?
Attached is a simple build.xml file that demonstrates the problem. It creates a
simple Java file that just calls readLine() and echos the input, compiles the
file, and runs it twice: once in a non-forked JVM, which works fine, and again
in a forked JVM, which hangs.
-- Ron --
Here is a sample output:
> ant
Buildfile: /Users/Ron/Development/Spots/tmp/ant-test/build.xml
compile:
[echo]
[echo] ant.version = Apache Ant(TM) version 1.8.2 compiled on December
20 2010
[echo] ant.home = /usr/share/ant
[echo] ant.library.dir = /usr/share/ant/lib
[echo] ant.java.version = 1.6
[echo]
[javac] Compiling 1 source file to /Users/Ron/Development/Spots/tmp/ant-test
good:
[echo] This will work: calling Java with fork=false
[java]
[java] Please enter some text and hit return:
asdf
[java] Text entered = asdf
bad:
[echo] This will hang: calling Java with fork=true
[java]
[java] Please enter some text and hit return:
asdf
ddfd
C-c C-c
---------------------------------------
On Mar 23, 2011, at 1:57 PM, Nicolas Lalevée wrote:
I can reproduce it locally. Could you please fill a bugzilla bug report [1],
I'll look deeper into it.
Nicolas
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