Bug#414178: No debugging symbols of local variables in constructor and destructors.

[Nicolás Maquiavelo <panfaust@hotmail.com>]

Package: g++
Version: 4:4.1.1-15

I tried to debug this simple program, and i cannot print the local variables 
in constructor and destructor methods. I write "print i" in the gdb command 
line and I get "No symbol found". I tested this code on Debian etch but, was 
tested by other guy who uses Fedora, and he get the same result. We tested 
it with both gdb 6.5 and gdb 6.6, so it seems g++ bug. I suggest to forward 
this bug to gcc developers as soon as possible.

---------------------------------file 
show_bug.cpp---------------------------------------------------------
/***
* This test program demonstrates a problem encountered with g+ v4.1.1 on
* Fedora Core 6 x86_64 using both gdb 6.5 and gdb 6.6.  The value of a
* local variable in a constructor or destructor is not printable, however
* the value of a local variable in a simple member function is printable.
* For testing the code was compiled as:
*     g++  -O0 -ggdb3 show_bug.cpp
*/
#include <iostream>

class Show_Bug
{
public:
 Show_Bug();

 void
   show_ints() ;

 ~Show_Bug();

} ; /* class Show_Bug */


Show_Bug::Show_Bug()
{
 // Trying to display the value of i in this scope results in the message:
 // No symbol "i" in current context.
 int i = 0 ;

 for (i=0; i<3; i++)
 {
   std::cout << i << std::endl;
 }

} /* Show_Bug::Show_Bug() */


void
Show_Bug::show_ints()
{
 // Trying to display the value of i in this scope works fine
 int i = 0 ;

 for (i=0; i<3; i++)
 {
   std::cout << i << std::endl;
 }

} /* Show_Bug::show_ints() */

Show_Bug::~Show_Bug()
{

 // Trying to display the value of i in this scope results in the message:
 // No symbol "i" in current context.
 int i = 0 ;

 for (i=4; i<6; i++)
 {
   std::cout << i << std::endl;
 }

}


int
main()
{
 Show_Bug tst ;

 tst.show_ints() ;

 return 0 ;

} /* main */
---------------End of 
file--------------------------------------------------------------------

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