[Bug tree-optimization/96945] unused std::vector is not always optimized away

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96945

--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jan Hubicka <hubi...@gcc.gnu.org>:

https://gcc.gnu.org/g:2264b68796aa6f1a609987cf7edb9183bf070e7e

commit r15-5176-g2264b68796aa6f1a609987cf7edb9183bf070e7e
Author: Jan Hubicka <hubi...@ucw.cz>
Date:   Tue Nov 12 15:58:02 2024 +0100

    Verify that empty std::vector is optimized away

    With __builtin_operator_new we now can optimize away unused std::vectors.
    This adds testcases mentioned in the PR.

            PR tree-optimization/96945

    gcc/testsuite/ChangeLog:

            * g++.dg/tree-ssa/pr96945.C: New test.