IY76552: Memory fault in nested loop within try block

Fixes are available

APAR status

Closed as program error.

Error description

-qeh=v6 user who have nasted try-catch where the catch handler
is exited via a break/continue/goto statement.

Core dump at runtime in nested loop and try block when compiling
and running the following source code:
Testcase:
--------
#include <iostream>
using namespace::std;
int func() {
    int retry;
    int i = 0;
    do {
        retry = 0;
        for( ; i < 1 ; i++ ) {
            try {
                try {
                    throw 2;
                } catch( const int& ex1 ) {
                    cout << "finc1:int exception : "<< ex1 <<
endl;
                    retry = 1;
                    break;
                }
            } catch( const char& ex2 ) {
                cout << "func2:char exception : " << ex2 <<endl;
            }
        }
    } while(retry);
    return 1;
}
int main(int argc, char* const* argv) {
    int rc = 0;
    try{
        throw 1;
    }catch( const int& ex3 ) {
        cout << "main:int exception : " << ex3 << endl;
        rc = func();
    }
    return rc;
}
$ xlC -g -c tp1.C
$ xlC -o tp1 tp1.o
$ ./tp1
main:int exception : 1
finc1:int exception : 2
Abort(coredump)

Local fix

To work around the problem, -qeh=v5 can be used. Or do not use
break/continue to exit from catch handler.

Problem summary

```
Same as submitter's text
```

Problem conclusion

The logic that was causing the runtime abend for nested
try-catch where the catch handler is exited via a
break/continue/goto statement is now fixed.

Temporary fix

Comments

APAR Information

APAR number
IY76552
Reported component name
VA C++ PROF FOR
Reported component ID
5765F5600
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2005-09-14
Closed date
2005-09-14
Last modified date
2007-04-30

APAR is sysrouted FROM one or more of the following:

IY72223
APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name
VA C++ PROF FOR
Fixed component ID
5765F5600

Applicable component levels

R600 PSY U811610
07/04/30 I 1000

Copyright and trademark information

IBM, the IBM logo and ibm.com are trademarks of International Business Machines Corp., registered in many jurisdictions worldwide. Other product and service names might be trademarks of IBM or other companies. A current list of IBM trademarks is available on the Web at "Copyright and trademark information" at www.ibm.com/legal/copytrade.shtml.

Document information

Product categories:

Software

Software Development

Analysis, Modeling, Design & Construction

VisualAge C++

Compiler

Software version:

600

Reference #:

IY76552

IBM Group:

Software Group

Modified date:

2007-04-30

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IY76552: Memory fault in nested loop within try block

Fixes are available

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name

Fixed component ID

Applicable component levels

R600 PSY U811610

Copyright and trademark information

Rate this page

Document information

Translate my page

Rate this page

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