https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87671
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
That does seem to explain the difference. With GCC 8 GDB thinks that 'ptr' is
passed in the register %rsi so the value in the register is the value of the
unique_ptr's member. With GCC 9 it correctly knows that the param is passed by
invisible reference, and so the value in the register is the address of the
unique_ptr on the stack.
This was fixed on trunk by r263164 so is a dup of PR 86687
*** This bug has been marked as a duplicate of bug 86687 ***
