[Bug c/112543] warning pointer used after free() for printf("%p")

xry111 at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Wed Nov 15 22:36:09 GMT 2023


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112543

Xi Ruoyao <xry111 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |xry111 at gcc dot gnu.org

--- Comment #3 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
I think the warning message is correct.  It says "pointer ‘p’ used after...",
not "pointer 'p' dereferenced after ...".

And as Andreas explained, *using* the value of p (without dereferencing) is
enough to invoke an undefined behavior.

Closing as invalid.


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