[Bug tree-optimization/126194] [15 Regression] LTO/DSE removes temporary initialization observed by placement delete cleanup

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126194

--- Comment #19 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-16 branch has been updated by Alexandre Oliva
<[email protected]>:

https://gcc.gnu.org/g:52f2f1a7249f1e8be4010fc2f7d6386e14eda77a

commit r16-9471-g52f2f1a7249f1e8be4010fc2f7d6386e14eda77a
Author: Alexandre Oliva <[email protected]>
Date:   Fri Jul 31 01:42:14 2026 -0300

    testsuite: tolerate argc==0 [PR126194]

    Some embedded targets set argc to zero when calling main, but then
    pr126194 testcase fails because it uses argc > 0 to enable the code
    that allows the test to pass.  Derive the argc passed to the primary
    LTOed entry point from argc >= 0, so that it isn't a link-time
    constant, but the guarding condition always passes at runtime.


    for  gcc/testsuite/ChangeLog

            PR tree-optimization/126194
            * g++.dg/lto/pr126194_2.C (main): Tolerate argc == 0.
    (cherry picked from commit 7c38c56214bf2809399a2198441bb48ee1b00512)