/*
* Copyright ( c ) 2014 , 2016 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
/*
* @ test
* @ bug 8033930 8033913
* @ summary bad formatting of StackMapTable entries
* @ modules jdk . jdeps / com . sun . tools . javap
*/
import java.io.*;
import java.util.*;
public class StackMapTableTest {
public static void main(String... args) throws Exception {
new StackMapTableTest().run();
}
void run() throws Exception {
String testClasses = System.getProperty("test.classes" );
String out = javap("-v" , "-classpath" , testClasses, A.class .getName());
String nl = System.getProperty("line.separator" );
out = out.replaceAll(nl, "\n" );
if (out.contains("\n\n\n" ))
error("double blank line found" );
String expect =
" StackMapTable: number_of_entries = 2\n" +
" frame_type = 252 /* append */\n" +
" offset_delta = 2\n" +
" locals = [ int ]\n" +
" frame_type = 250 /* chop */\n" +
" offset_delta = 18\n" ;
if (!out.contains(expect))
error("expected text not found" );
if (errors > 0 )
throw new Exception(errors + " errors found" );
}
String javap(String... args) throws Exception {
StringWriter sw = new StringWriter();
PrintWriter out = new PrintWriter(sw);
int rc = com.sun.tools.javap.Main.run(args, out);
out.close();
System.out.println(sw.toString());
if (rc < 0 )
throw new Exception("javap exited, rc=" + rc);
return sw.toString();
}
void error(String msg) {
System.out.println("Error: " + msg);
errors++;
}
int errors;
/** Simple test class to run through javap. */
public class A {
public void a() {
for (int i = 0 ; i < 10 ; i++) {
System.out.println(i);
}
}
public void b() {
}
public void c() {
}
}
}
Messung V0.5 in Prozent C=89 H=93 G=90
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-06-10)
¤
*© Formatika GbR, Deutschland