Jakub noted in the PR that this test fails for -std=c++98. Tested x86_64-linux.
OK for trunk? -- >8 -- The _M_realloc_insert member does not have the trivial relocation optimization for C++98, which seems to be why the _M_end_of_storage member does not get optimized away. Make this test unsupported for C++98. gcc/testsuite/ChangeLog: PR libstdc++/110879 * g++.dg/opt/pr110879.C: Require C++11 or later. --- gcc/testsuite/g++.dg/opt/pr110879.C | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/testsuite/g++.dg/opt/pr110879.C b/gcc/testsuite/g++.dg/opt/pr110879.C index 7f0a0a80b8a..57556605a51 100644 --- a/gcc/testsuite/g++.dg/opt/pr110879.C +++ b/gcc/testsuite/g++.dg/opt/pr110879.C @@ -1,4 +1,4 @@ -// { dg-do compile } +// { dg-do compile { target c++11 } } // { dg-options "-O3 -fdump-tree-optimized" } #include <vector> -- 2.42.0