[Bug debug/22318] New: debug info wrong for doubles followed by bools

[Bug debug/22318] New: debug info wrong for doubles followed by bools

[charles at kde dot org]

This is a problem in gcc's default debug format.  It works fine with -gstabs.     
  
struct X  
{  
	bool x;  
	double d;  
};  
  
int main()  
{  
	X x;  
	x.d = 42.0;  
}  
  
When debugging with gdb, x.d will contain something wrong, (often something   
like 5.301466631257326e-315). If you change the bool to another type or   
remove that variable completely, the results are correct. If you move the bool  
to the end of the structure, the results are also correct.  
  
This bug does not affect the execution of the program.  
  
I guess it's something to do with how gcc writes debug info for the size of a   
bool in the structure, possibly related to packing.  
  
I'm also able to reproduce this on gcc 3.3.4.

-- 
           Summary: debug info wrong for doubles followed by bools
           Product: gcc
           Version: 3.3.6
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: debug
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: charles at kde dot org
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: gcc version 3.3.6 (Debian 1:3.3.6-7)


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22318

[Bug debug/22318] debug info wrong for doubles followed by bools

[charles at kde dot org]

------- Additional Comments From charles at kde dot org  2005-07-06 01:24 -------
Oh, and to add, if you change the double to an int, it works. 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22318

[Bug debug/22318] debug info wrong for doubles followed by bools

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-06 01:30 -------
Fixed in 3.4.0 and above.  3.3.x is only gcc releases which are effected so closing as fixed as 3.3.6 was 
the last release of 3.3.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
           Keywords|                            |wrong-debug
      Known to fail|                            |3.3.3
      Known to work|                            |4.0.0 4.1.0 3.2.3 3.4.0
         Resolution|                            |FIXED
   Target Milestone|---                         |3.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22318