[Bug c++/13865] [tree-ssa] dtor runs prematurely for loop-scoped variable

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2004-01-26 14:52 -------
Confirmed indeed. And just to make sure that we don't have any copy 
constructors running: 
------------------- 
#include <stdio.h> 
 
struct A { 
    A(int val) : mValue(val) { printf("A ctor\n"); } 
    A(const A&a) : mValue(a.mValue) { printf("A copy ctor\n"); } 
    ~A() { printf("A dtor\n"); } 
 
    int mValue; 
}; 
 
int main() 
{ 
  int i = 0; 
  for (A a = A(i); a.mValue != 2; a = A(++i)) { 
    printf("iteration %d\n", i); 
  } 
} 
------------------------- 
When run this never produces the "A copy ctor" output. 
 
This may well be the cause of some memory corruption people have seen in 
their codes when using tree-ssa. 
 
W. 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gerald at pfeifer dot com
           Priority|P2                          |P1
   Last reconfirmed|2004-01-26 13:09:59         |2004-01-26 14:52:16
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13865