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* [Bug c++/14167] New: Unneeded C++ types are output in debug info due to use of static constants
@ 2004-02-17  4:50 drow at gcc dot gnu dot org
  2004-02-17  5:07 ` [Bug c++/14167] " pinskia at gcc dot gnu dot org
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: drow at gcc dot gnu dot org @ 2004-02-17  4:50 UTC (permalink / raw)
  To: gcc-bugs

Take this testcase:
class Class1 {
  static const int var1 = 1;
  static const int var2 = var1;
};

class Class2 {
  static const int var1 = 1;
  static const int var2 = 1;
};

Compile it with -gdwarf-2.  Debug information for Class2 will not be emitted,
which is OK, because Class2 is unused.  Debug information for Class1 will be
emitted, because Class1::var1 is marked as used in the initializer for Class1::var2,
which causes Class1::var1 to be emitted, which causes all of Class1 to be emitted.

It gets marked used in finish_id_expression as I expected:
2581          if (TREE_CODE (decl) == VAR_DECL
2582              || TREE_CODE (decl) == PARM_DECL
2583              || TREE_CODE (decl) == RESULT_DECL)
2584            mark_used (decl);

Is the used marker necessary in integral constant-expressions?  Where else?

This is the source of about 60% of the (60k!) debug information emitted for the
"trivial" C++ program:
#include <iostream>
int main() { return 0; }

-- 
           Summary: Unneeded C++ types are output in debug info due to use
                    of static constants
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: drow at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14167


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug c++/14167] Unneeded C++ types are output in debug info due to use of static constants
  2004-02-17  4:50 [Bug c++/14167] New: Unneeded C++ types are output in debug info due to use of static constants drow at gcc dot gnu dot org
@ 2004-02-17  5:07 ` pinskia at gcc dot gnu dot org
  2004-08-11 22:10 ` pinskia at gcc dot gnu dot org
  2005-05-12  2:06 ` pinskia at gcc dot gnu dot org
  2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-02-17  5:07 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-02-17 05:07 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-02-17 05:07:39
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14167


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug c++/14167] Unneeded C++ types are output in debug info due to use of static constants
  2004-02-17  4:50 [Bug c++/14167] New: Unneeded C++ types are output in debug info due to use of static constants drow at gcc dot gnu dot org
  2004-02-17  5:07 ` [Bug c++/14167] " pinskia at gcc dot gnu dot org
@ 2004-08-11 22:10 ` pinskia at gcc dot gnu dot org
  2005-05-12  2:06 ` pinskia at gcc dot gnu dot org
  2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-08-11 22:10 UTC (permalink / raw)
  To: gcc-bugs



-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
   Last reconfirmed|2004-05-19 19:59:32         |2004-08-11 22:09:57
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14167


^ permalink raw reply	[flat|nested] 4+ messages in thread
* [Bug c++/14167] Unneeded C++ types are output in debug info due to use of static constants
  2004-02-17  4:50 [Bug c++/14167] New: Unneeded C++ types are output in debug info due to use of static constants drow at gcc dot gnu dot org
  2004-02-17  5:07 ` [Bug c++/14167] " pinskia at gcc dot gnu dot org
  2004-08-11 22:10 ` pinskia at gcc dot gnu dot org
@ 2005-05-12  2:06 ` pinskia at gcc dot gnu dot org
  2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-05-12  2:06 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-12 02:06 -------
I think this has now been fixed (I tried to reproduce this with the testcase but I don't know if I did the 
correct thing to check).

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14167


^ permalink raw reply	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2005-05-12  2:06 UTC | newest]

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2004-02-17  4:50 [Bug c++/14167] New: Unneeded C++ types are output in debug info due to use of static constants drow at gcc dot gnu dot org
2004-02-17  5:07 ` [Bug c++/14167] " pinskia at gcc dot gnu dot org
2004-08-11 22:10 ` pinskia at gcc dot gnu dot org
2005-05-12  2:06 ` pinskia at gcc dot gnu dot org

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