Bug#388596: gcj-4.1: CharsetEncoder.canEncode() gives different results than Sun version  
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Author Message
Marcus Better
PostPosted: 2006-9-21 20:40:00 Top
java-programmer, Bug#388596: gcj-4.1: CharsetEncoder.canEncode() gives different results than Sun version Package: gcj-4.1
Version: 4.1.1-13
Severity: normal

The following test program gives different results with gcj and Sun JDK:

// A.java
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;

public class A {
public static void main(String[] args) throws java.io.IOException
{
CharsetEncoder enc = Charset.forName("US-ASCII").newEncoder();
System.out.println(enc.canEncode('\u00e4'));
}
}
// end

$ javac A.java
$ /usr/lib/jvm/java-1.5.0-sun/bin/java A
false
$ /usr/lib/jvm/java-gcj/bin/java A
true

The Sun version seems to return something like (c > 31 && c < 127),
which makes sense, whereas gcj always gives true.

This breaks lots of code, such as Apache JaxMe 2 version 0.51
(specifically the MarshallerTest in the test suite, which generated
invalid XML with gcj).

-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.17-1-686
Locale: LANG=sv_SE.UTF-8, LC_CTYPE=sv_SE.UTF-8 (charmap=UTF-8)

Versions of packages gcj-4.1 depends on:
ii gcc-4.1 4.1.1-13 The GNU C compiler
ii gcj-4.1-base 4.1.1-13 The GNU Compiler Collection (gcj b
ii gij-4.1 4.1.1-13 The GNU Java bytecode interpreter
ii java-common 0.25 Base of all Java packages
ii libc6 2.3.6.ds1-4 GNU C Library: Shared libraries
ii libc6-dev 2.3.6.ds1-4 GNU C Library: Development Librari
ii libgcc1 1:4.1.1-13 GCC support library
ii libgcj7-dev 4.1.1-13 Java development headers and stati
ii libgcj7-jar 4.1.1-13 Java runtime library for use with
ii zlib1g 1:1.2.3-13 compression library - runtime

Versions of packages gcj-4.1 recommends:
ii fastjar 1:4.1.1-13 Jar creation utility

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