How to determine if class was compiled with debugging information?

How may I determine if class was compiled with debugging information? Aside from actually executing the class in a debugger.

As known, when compiling "javac -g ..." the class
files contain debugging information.
my Naive question is WHAT is this information?
could you please add any links to articles about this
debugging information?http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html#22856
http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html#5956

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Packages compiled with debug info

Hi,
How do we check if a package has been compiled with DEBUG information or not?
The package could have been compiled like this:
ALTER PACKAGE pk1 COMPILE DEBUG
Is there any table that I can check?
Thanks in advance.
Sanal Krishnan

Is this a 10g feature?It seems only user_plsql_object_settings is new in 10g.
all_plsql_object_settings is available in 9i:
michaels> select * from dict where table_name like '%PLSQL%'
TABLE_NAME                     COMMENTS
ALL_PLSQL_OBJECT_SETTINGS      Compiler settings of stored objects acce
                               ssible to the user
1 row selected.
michaels> select name, type,plsql_debug from sys.all_plsql_object_settings where owner = 'SYSTEM'
NAME                           TYPE         P
DEF$_PROPAGATOR_TRIG           TRIGGER
REPCATLOGTRIG                  TRIGGER
michaels> select * from v$version
BANNER
Oracle9i Enterprise Edition Release 9.2.0.8.0 - 64bit Production
PL/SQL Release 9.2.0.8.0 - Production
CORE     9.2.0.8.0     Production
TNS for HPUX: Version 9.2.0.8.0 - Production
NLSRTL Version 9.2.0.8.0 - Production

How to determine one class is a dynamic one or not?

hello,i got a simple question,like the title says.
how to determine one class is a dynamic one or not?
finally,i got an indirect solution.
package {
public dynamic class MyClass extends MySuperClass
public function MyClass()
super();
this.isDynamic=true;
this is a simple dynamic class,i defined a varible
directly,it is ok with dynamic class though i didn't declare it.
then in another class(parent class of this dynamic
class),where i try to determine the instance of this dynamic class
is a dynamic one or not.
i will use one function "checkIsDynamic" to check that
varible is exsit or not.then it will help me to determine what i
want know.
protected function checkIsDynamic():Boolean
try{this["isDynamic"]}
catch(er)
return false;
return true;
if another child class of MySuperClass didn't defined this
property,i can affirm it is not a dynamic class,or vice versa
this function also can be expanded to another one:
protected function checkProperty(prop:String):Boolean
try{this[prop]}
catch(er)
return false;
return true;
it is an useful solution,defined in parent class,and to check
the property is exist or not in child class.

try adding a property to a class instance.

Compiling with debug info

Hi!
I get a question about PL/SQl, How can I compile a Block PL/SQL with debug information, in SQL*Plus?
Thanks in Advance
- Pablo

From the symptoms you describe, it is possible that the shared library contains a bug, but it is more likely that the problem is in your code, passing bad data to the shared library.
The problem might be a compiler bug, but I think an error in your code is more likely.
For example, your code as written might have undefined behavior that works by accident when compiling without optimizing, but fails when the compiler improves the runtime code.
Some examples:
1. A classic MT programming error is failing to declare a variable volatile when it is shared by more than one thread. In each thread, the compiler assumes it can remember the value of the variable and not reload it between references.
2. "x = ++x + b;" Modifying a variable twice in an expression withtout sequence points has undefined behavior -- compiler optimization can affect the result.
3." foo(x, x+=3);" the order of evaluation of function arguments is unspecified, so the actual values passed to foo could depend on optimization.
With C++ 5.5, you get some warnings from system headers that you can't do anything about, which I suspect is why you have disabled some warnings. Unfortunately, you might be disabling warnings that you need to see. That is, some of the disabled warnings could point to invalid code that results in the program crash.
I suggest using w instead of w2 (to avoid uninteresting warnings), and fix your code to eliminate the warnings you get.
In the current compiler, C++ 5.7 in Sun Studio 10, we have made some adjustments to warnings to make w and w2 more useful. You should consider upgrading.You can get a 60-day free trial version here:
http://www.sun.com/software/products/studio/index.xml
Also get the current patches for it here:
http://developers.sun.com/prodtech/cc/downloads/patches/index.html

Compiling with debug option

How to give user Compiling with debug option, i have try to by giving grant debug any procedure and debug connect session but it failed.
Any ideas?
Edited by: rootsman on Jul 15, 2010 12:00 AM

Post the error screenshot..
eg:
grant DEBUG CONNECT SESSION to username;
grant DEBUG ANY PROCEDURE to username;
Check the below explanation:
DEBUGGING:
DEBUG CONNECT SESSION
Connect the current session to a debugger that uses the Java Debug Wire Protocol (JDWP).
DEBUG ANY PROCEDURE
Debug all PL/SQL and Java code in any database object; displayinformation on all SQL statements executed by the application
Note: Granting this privilege is equivalent to granting the DEBUG object privilege on all applicable objects in the database.

Copied objects are compiled with debug True

I had an issue with copied packages/triggers/procedures that when they were copied showed up as compiled with debug status.
My sql developer client has a default setting of compilng PL/SQL code with optimization level = 0 , while our database has a default = 2.
When modifying this level and setting it to 0, the debug flag is turned on, although not specified in the sql developer client)
preferences -> database -> PL/SQL -> Optimization Level = 2
select * from v$parameter where name like 'plsql%' returns
888         plsql_debug      1             FALSE    FALSE
889         plsql_optimize_level     3             2             2 after setting the level to 0 the same query returns:
888         plsql_debug      1             TRUE     TRUE
889         plsql_optimize_level     3             0             0this compile with debug behavior is shown on oracle 10 and 11 databases.

I also have sqldeveloper version 3.2.20.09 and look up the value for optimizer in the preferences menu via preferences -> database -> PL/SQL (just as in my first message)
BTW I can still reproduce this issue (and 15 other dbas and developers at where I work) on both oracle 10 and 11.
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
"CORE     10.2.0.4.0     Production"
TNS for Linux: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production
and
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
PL/SQL Release 11.2.0.2.0 - Production
"CORE     11.2.0.2.0     Production"
TNS for Linux: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production
BTW We've been using sqldeveloper here since version 2.x. We found a workaround by setting the value for Optimization Level to 2, although you might not reproduce the issue, I suggest to keep it for others, although it seems not many others experience this issue.

Fatal error compiler limit : debug information module size exceeded ?

Hy
I try to compile a model, size 6 Mo.
I can simulate it on my pc, but when I want to generate a dll with SIT I have a error fatal...
fatal error C1067: compiler limit : debug information module size exceeded
Do you have any idea ?
Thanks
FB

Hi,
Is this still linked to this thred? or do you still have the problem ?
Regards.
Richard Keromen
National Instruments France
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How can you tell what version of JDK a class was compiled under

Kind Folks,
I have a Java application purchased from a vendor that is certified to run under JDK/JRE 1.2xxx. I recently received some extensions to the application from the vendor's consulting arm but I am having problems with the extensions. I believe the extensions were compiled under JDK 1.3xxxx but I need tp prove it to the vendor. Is there a way I can verify what version of JDK a class file was compiled under?
John Fowler

...version of JDK a class file was compiled under? Not sure that makes sense. The class files will run the same under both. The only difference you would see is if you got a class not found or a method not found exception. If the class/method does not exist in 1.2 but does exist in 1.3 then that is where they were compiled. Manually verifying that would take a lot of work. Running it, as long as you excercise all of the functionality, (and presuming your app is not eating exceptions/errors when it shouldn't) then you should get an exception telling you of the error.

How to find out which PL/SQL Proc is Compiled with Debug?

Hi,
is there any View where i can see, which PL/SQL Proc is compiled with the debug flag?
Thanks
Marco
Message was edited by:
mpatzwah

Alternatively:
select name, plsql_debug from sys.all_plsql_object_settings

How to unpack an installer previously compiled with Inno Setup?

Hi,
I want to know how can I unpack a previously compiled installer (exe file) made with Inno Setup to extract and recover some DLL files into the installer. I found a tool called InnoExtractor
that supposedly
does this, but I don't know how is work. Any help is appreciate. This tool can by downloaded from here:
http://www.softpedia.com/get/Compression-tools/InnoExtractor.shtml
Regards and I'll wait your support. Thanks in advance.

Hello GonKong,
I am afraid that this is not the proper forum for this issue, since it is related to the tool which belongs to third-party.
I would recommend you consider connecting with the publisher of Inno Setup or InnoExtractor to get supports.
Regards.
Carl
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Can't find library when compiled with debugging

Hi all,
Compiling this code segment cannot find a library when using -g
bash-3.2$ cat tester.cc
#include <iostream>
#include <string>
using namespace std ;
static void
myRoutine()
string str= "this is in routine" ;
string str3 ;
str3 = str.substr(11,7) ;
if(str.substr(0,4) == "this") cout << "Have a hit" << endl ;
cout << "this is str3 - " << str3 << endl ;
int main(int argc, char **argv)
string str = "this is a test" ;
string str1, str2 ;
str1 = str.substr(0,4) ;
str2 = str.substr(10,4) ;
cout << "this is str1 - " << str1 << endl ;
cout << "this is str2 - " << str2 << endl ;
myRoutine() ;
return 0 ;
bash-3.2$ CC -g -o tester tester.cc
bash-3.2$ ldd tester
     libCstd.so.1 =>     /usr/lib/libCstd.so.1
     libCstd.so.1 (SUNW_1.4.2) =>     (version not found)
     libCrun.so.1 =>     /usr/lib/libCrun.so.1
     libm.so.2 =>     /usr/lib/libm.so.2
     libc.so.1 =>     /usr/lib/libc.so.1
If I comment out:
if(str.substr(0,4) == "this") cout << "Have a hit" << endl ;
bash-3.2$ cat tester.cc
#include <iostream>
#include <string>
using namespace std ;
static void
myRoutine()
string str= "this is in routine" ;
string str3 ;
str3 = str.substr(11,7) ;
// if(str.substr(0,4) == "this") cout << "Have a hit" << endl ;
cout << "this is str3 - " << str3 << endl ;
int main(int argc, char **argv)
string str = "this is a test" ;
string str1, str2 ;
str1 = str.substr(0,4) ;
str2 = str.substr(10,4) ;
cout << "this is str1 - " << str1 << endl ;
cout << "this is str2 - " << str2 << endl ;
myRoutine() ;
return 0 ;
bash-3.2$ CC -g -o tester tester.cc
bash-3.2$ ldd tester
     libCstd.so.1 =>     /usr/lib/libCstd.so.1
     libCrun.so.1 =>     /usr/lib/libCrun.so.1
     libm.so.2 =>     /usr/lib/libm.so.2
     libc.so.1 =>     /usr/lib/libc.so.1
Or if I remove -g:
bash-3.2$ cat tester.cc
#include <iostream>
#include <string>
using namespace std ;
static void
myRoutine()
string str= "this is in routine" ;
string str3 ;
str3 = str.substr(11,7) ;
if(str.substr(0,4) == "this") cout << "Have a hit" << endl ;
cout << "this is str3 - " << str3 << endl ;
int main(int argc, char **argv)
string str = "this is a test" ;
string str1, str2 ;
str1 = str.substr(0,4) ;
str2 = str.substr(10,4) ;
cout << "this is str1 - " << str1 << endl ;
cout << "this is str2 - " << str2 << endl ;
myRoutine() ;
return 0 ;
bash-3.2$ CC -o tester tester.cc
bash-3.2$ ldd tester
     libCstd.so.1 =>     /usr/lib/libCstd.so.1
     libCrun.so.1 =>     /usr/lib/libCrun.so.1
     libm.so.2 =>     /usr/lib/libm.so.2
     libc.so.1 =>     /usr/lib/libc.so.1
then I can run successfully
Any thoughts or hints?
bash-3.2$ CC -V
CC: Sun Ceres C++ 5.10 SunOS_i386 2008/07/10
Usage: CC [ options ] files. Use 'CC -flags' for details
bash-3.2$ uname -a
SunOS alpha 5.11 snv_86 i86pc i386 i86pc
Thanks,
Jim

Ack! Please ignore my earlier posting. I did not play close enough attention to details in your post. I apologize for the confusion. Let me start over:
The Studio Express release you have contains a newer version of the C++ runtime library libCstd.so.1 than is available yet in Solaris patches. We bump the internal version number when we add new interfaces. The internal version number of the Studio Express library is SUNW_1.3.2. The version of the latest release Solaris patch is SUNW_1.3.1.
Some new string class operator functions are in version SUNW_1.3.2. I think these are also defined as inline functions in the compiler headers. When you compile with -g, inlining is disabled, and you create a dependency on library version SUNW_1.3.2. (Compiling with -g0 allows function inlining, and might resolve your problem, but read on.)
We have not released a libCstd.so.1 with internal version SUNW_1.4.2, so I don't understand how that version number could appear in an error message. Did you really see that version, or is it a transcription error? For now, let's assume it is a transcription error.
When you compile and link with CC, the program gets a runpath pointing into the compiler installation area. At program run time, the loader looks for libraries in directories listed in the runpath, with /lib and /usr/lib as last resort. The "ldd" command reports what the runtime loader will do regarding dependent libraries.
If the compiler is installed in /opt, a 32-bit program gets a runpath that includes /opt/SUNWspro/lib. In that directory in Sun Studio Express is a symbolic link that points to ../prod/usr/lib/libCstd.so.1, the library with version SUNW_1.3.2.
If you try this:
% /opt/SUNWspro/bin/CC hello.cc
% ldd a.out
you should see, among other things,
libCrun.so.1 => /opt/SUNWspro/lib/libCstd.so.1
(Depending on the OS version, you might see
libCrun.so.1 => /opt/SUNWspro/prod/usr/lib/libCstd.so.1 instead.)
But if ldd can't resolve the library, you probably have a corrupted Sun Studio Express installation. In that case, uninstall it, and reinstall from a fresh download.
If you run the program on a different computer where Sun Studio Express is not installed, the loader won't be able to find the right library version, and you will get "not found" results. I addressed this issue in another thread:
http://forums.sun.com/thread.jspa?threadID=5340163

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Thanks a lot!

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Hi Mdjco,
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Also another question is after the vendor insert the digital signature, it automatically asked to save (which I found out why from help) and then it opens up the email and sends the form as XML. I will need it to send as PDF, possible??
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Compiling with debug and runtime performance degradation

Just a quick question: Does including debug information in class files degrade runtime performance in any way?
Thanks!

Quick answer: it depends on what your application does.
Mostly, it shouldn't matter but you should always profile and time your
application to find the truth.

How to setup a Class B network with WRT54GX ver. 2

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If the router can't change, what should I do? Any other router support Class B network?
Thanks!

bcow wrote:
I did but it doesn't work. It seems don't have 255.255.0.0 to select.
would you state more clear of how to do it? Thanks!
It does not have that because it does not support it... the router runs on CLASS C only because it was designed and made for SOHO only... bussiness lines of Linksys or Cisco can do that....but not this router...
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How to determine if class was compiled with debugging information?

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