https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106965
Bug ID: 106965
Summary: g++ optimization removes assigning 0 to deleted
pointer- causes double free.
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: olddra3rd at mozmail dot com
Target Milestone: ---
Created attachment 53590
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53590&action=edit
source file of the function implementations.
Dear GNU, how are you?
Using gcc version 11.2.0 (Ubuntu 11.2.0-19ubuntu1) on a Ubuntu 22.04,
received a double free after using a destructor twice (one explicitly and one
at the end of function) with compiling optimizations..
Comp
Bug occurs when when the call happens on a different compilation unit:
int main()
{
X x1;
x1.~X();
return 0;
}
>From looking at the assembly - it seems assigning 0 to the pointer is removed
from the code.
Compilation flags:
g++ -O
Seems to work fine with clang++.
Have a great day!
