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c++ - Optimization bug in exception handling

#include <stdio.h>

struct A
{ };

int main()
  int *i = 0;
    i = new int(0);
    throw A();
  catch (const A &a)
    printf("%d\n", *i);

Compiled with optimizations enabled (-o+all), the compiler assumes that i is
still NULL when the exception is caught:

                xor     ECX,ECX
                push    dword ptr [ECX]
                push    offset FLAT:_DATA
                call    near ptr _printf

Extracted from omniORB (it only occurs when an omniORB application exits
and omniORB tries to clean up...)

bye, Christof

http://cmeerw.org                                 JID: cmeerw jabber.at
mailto cmeerw at web.de

...and what have you contributed to the Net?
Dec 31 2002