Le 23 mars 2011 à 07:13, Ron Goldman a écrit : > 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? > > Below 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.
I can reproduce it locally. Could you please fill a bugzilla bug report [1], I'll look deeper into it. Nicolas [1] https://issues.apache.org/bugzilla/enter_bug.cgi?product=Ant > > -- 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 >> > > And here's the build.xml file: > > <?xml version="1.0" encoding="UTF-8" standalone="no"?> > <project basedir="." default="test-all" name="java-input-bug"> > > <!-- > Build file to demonstrate a bug with ant version 1.8.2 running in Mac > OS X 10.6 > using the latest JavaForMacOSX10.6Update4, Java version 1.6.0_24. > > Do "ant bad" to run a Java app that just reads in a line of text & > echos it. > If run in a forked JVM the program hangs waiting for input. > > Doing "ant good" to run it in a non-forked JVM works fine, as does > directly > executing it with the command "java Test". > > Everything works fine with ant version 1.8.1. > --> > > <target name="compile"> > <echo> > ant.version = ${ant.version} > ant.home = ${ant.home} > ant.library.dir = ${ant.library.dir} > ant.java.version = ${ant.java.version} > </echo> > <echo file="Test.java"> > import java.io.*; > public class Test { > public static void main(String[] args) throws IOException { > System.out.println("\nPlease enter some text and hit return:"); > String line = new BufferedReader(new > InputStreamReader(System.in)).readLine(); > System.out.println("Text entered = " + line); > } > } > </echo> > <javac srcdir="." > destdir="." > includeAntRuntime="no" > includeJavaRuntime="no" > debug="false" > fork="yes"/> > </target> > > <target name="bad" depends="compile"> > <echo message="This will hang: calling Java with fork=true"/> > <java classname="Test" > classpath="." > fork="true" > failonerror="true"/> > </target> > > <target name="good" depends="compile"> > <echo message="This will work: calling Java with fork=false"/> > <java classname="Test" > classpath="." > fork="false" > failonerror="true"/> > </target> > > <target name="test-all" depends="good, bad"/> > > </project> > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@ant.apache.org > For additional commands, e-mail: user-h...@ant.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@ant.apache.org For additional commands, e-mail: user-h...@ant.apache.org
