[{"id":3675670,"web_url":"http://patchwork.ozlabs.org/comment/3675670/","msgid":"","list_archive_url":null,"date":"2026-04-10T06:22:29","subject":"Re: [PATCH] libstdc++: Fix duplicated export on\n basic_string::_M_disjunct on Solaris.","submitter":{"id":90409,"url":"http://patchwork.ozlabs.org/api/people/90409/","name":"Tomasz Kamiński","email":"tkaminsk@redhat.com"},"content":"On Thu, Apr 9, 2026 at 2:39 AM Tomasz Kamiński wrote:\n\n> The patterns for cow_string that were split to exclude starts_with,\n> ends_with, did not include name starting with _:\n> _ZNKSs[0-9][0-9][a-z]*;\n> _ZNKSbIwSt11char_traitsIwESaIwEE[0-9][0-9][a-z]*;\n>\n> This was not caught on x86_64-linux as _M_disjunt was already exported\n> in 3.4 version (when HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT\n> is defined).\n>\n> libstdc++-v3/ChangeLog:\n>\n> * config/abi/pre/gnu.ver (GLIBCXX_3.4): Remove _ZNKSs11_[MS]_*\n> and _ZNKSbIwSt11char_traitsIwESaIwEE11_[MS]_* patterns.\n> ---\n> I got this patterns wrong, because SSO string pattern includes _M_disjunct,\n> and I have seen this funciton being exported in 3.4 version on linux.\n>\nFor reference it was exported in 3.4 here:\n#ifdef HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT\n # GLIBCXX_ABI compatibility only.\n # std::string\n _ZNKSs11_M_disjunctEPKc;\n _ZNKSs15_M_check_lengthE[jmy][jmy]PKc;\n\n\n\n>\n> Tested on x86_64-linux (check-abi and baseline). Rainer confirmed it fixes\n> Solaris. OK for trunk?\n>\n> libstdc++-v3/config/abi/pre/gnu.ver | 2 --\n> 1 file changed, 2 deletions(-)\n>\n> diff --git a/libstdc++-v3/config/abi/pre/gnu.ver\n> b/libstdc++-v3/config/abi/pre/gnu.ver\n> index 2ff2aa02383..624de951d41 100644\n> --- a/libstdc++-v3/config/abi/pre/gnu.ver\n> +++ b/libstdc++-v3/config/abi/pre/gnu.ver\n> @@ -270,7 +270,6 @@ GLIBCXX_3.4 {\n> _ZNKSs[5-9][a-b]*;\n> _ZNKSs[0-8][d-e]*;\n> _ZNKSs[0-9][g-z]*;\n> - _ZNKSs11_[MS]_*;\n> _ZNKSs1[2-8][a-z]*;\n> _ZNKSs[2-9][0-9][a-z]*;\n> _ZNKSs4find*;\n> @@ -343,7 +342,6 @@ GLIBCXX_3.4 {\n> _ZNKSbIwSt11char_traitsIwESaIwEE[5-9][a-b]*;\n> _ZNKSbIwSt11char_traitsIwESaIwEE[0-8][d-e]*;\n> _ZNKSbIwSt11char_traitsIwESaIwEE[0-9][g-z]*;\n> - _ZNKSbIwSt11char_traitsIwESaIwEE11_[MS]_*;\n> _ZNKSbIwSt11char_traitsIwESaIwEE1[2-8][a-z]*;\n> _ZNKSbIwSt11char_traitsIwESaIwEE[2-9][0-9][a-z]*;\n> _ZNKSbIwSt11char_traitsIwESaIwEE[abd-z]*;\n> --\n> 2.53.0\n>\n>","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","gcc-patches@gcc.gnu.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","gcc-patches@gcc.gnu.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=O1mUgOl7;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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Rainer confirmed it fixes\n> Solaris. OK for trunk?\n>\n\nOK\n\n> libstdc++-v3/config/abi/pre/gnu.ver | 2 --\n> 1 file changed, 2 deletions(-)\n>\n> diff --git a/libstdc++-v3/config/abi/pre/gnu.ver b/libstdc++-v3/config/abi/pre/gnu.ver\n> index 2ff2aa02383..624de951d41 100644\n> --- a/libstdc++-v3/config/abi/pre/gnu.ver\n> +++ b/libstdc++-v3/config/abi/pre/gnu.ver\n> @@ -270,7 +270,6 @@ GLIBCXX_3.4 {\n> _ZNKSs[5-9][a-b]*;\n> _ZNKSs[0-8][d-e]*;\n> _ZNKSs[0-9][g-z]*;\n> - _ZNKSs11_[MS]_*;\n> _ZNKSs1[2-8][a-z]*;\n> _ZNKSs[2-9][0-9][a-z]*;\n> _ZNKSs4find*;\n> @@ -343,7 +342,6 @@ GLIBCXX_3.4 {\n> _ZNKSbIwSt11char_traitsIwESaIwEE[5-9][a-b]*;\n> _ZNKSbIwSt11char_traitsIwESaIwEE[0-8][d-e]*;\n> _ZNKSbIwSt11char_traitsIwESaIwEE[0-9][g-z]*;\n> - _ZNKSbIwSt11char_traitsIwESaIwEE11_[MS]_*;\n> _ZNKSbIwSt11char_traitsIwESaIwEE1[2-8][a-z]*;\n> _ZNKSbIwSt11char_traitsIwESaIwEE[2-9][0-9][a-z]*;\n> _ZNKSbIwSt11char_traitsIwESaIwEE[abd-z]*;\n> --\n> 2.53.0\n>","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","gcc-patches@gcc.gnu.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","gcc-patches@gcc.gnu.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=ZnnYKCyO;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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