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Fri, 29 May 2026 12:51:50 +0000 From: Tom de Vries To: gdb-patches@sourceware.org Subject: [PATCH 2/2] [gdb/testsuite] Use Wno-non-c-typedef-for-linkage for gcc 16 Date: Fri, 29 May 2026 14:51:49 +0200 Message-ID: <20260529125149.2027857-3-tdevries@suse.de> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260529125149.2027857-1-tdevries@suse.de> References: <20260529125149.2027857-1-tdevries@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FUZZY_RATELIMITED(0.00)[rspamd.com]; ARC_NA(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_HAS_DN(0.00)[]; RCVD_TLS_ALL(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[gdb-patches@sourceware.org]; FROM_EQ_ENVFROM(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid, imap1.dmz-prg2.suse.org:helo, sourceware.org:url] X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gdb-patches-bounces~public-inbox=simark.ca@sourceware.org With gcc 16 and test-case gdb.cp/classes.exp I run into: ... classes.cc:440:15: warning: anonymous non-C-compatible type given name for linkage purposes by 'typedef' declaration [-Wnon-c-typedef-for-linkage]^M 440 | typedef class {^M | ^^M | DynamicBase2^M classes.cc:443:15: note: type is not C-compatible because it contains 'virtual int DynamicBase2::get_x()' declaration^M 443 | virtual int get_x () { return x; }^M | ^~~~~^M ... Fix this by applying Wno-non-c-typedef-for-linkage, which is already done for clang. Likewise for gdb.cp/class2.exp. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=34187 --- gdb/testsuite/gdb.cp/class2.exp | 3 ++- gdb/testsuite/gdb.cp/classes.exp | 9 ++++++--- 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/gdb/testsuite/gdb.cp/class2.exp b/gdb/testsuite/gdb.cp/class2.exp index 705f51ac3e0..aa2a04467f4 100644 --- a/gdb/testsuite/gdb.cp/class2.exp +++ b/gdb/testsuite/gdb.cp/class2.exp @@ -21,7 +21,8 @@ standard_testfile .cc set flags [list debug c++] # When using recent Clangs, this test fails to compile without this warning # being disabled. However, older Clangs fail to recognize the flag. -if { [gcc_major_version "clang-*" "c++"] > 10 } { +if { [gcc_major_version "clang-*" "c++"] > 10 + || [gcc_major_version "gcc-*" "c++"] >= 16} { lappend flags additional_flags=-Wno-non-c-typedef-for-linkage } diff --git a/gdb/testsuite/gdb.cp/classes.exp b/gdb/testsuite/gdb.cp/classes.exp index 71ce810adad..d2fb7c0c14c 100644 --- a/gdb/testsuite/gdb.cp/classes.exp +++ b/gdb/testsuite/gdb.cp/classes.exp @@ -25,12 +25,15 @@ load_lib "cp-support.exp" standard_testfile .cc set flags [list debug c++] + set clang_used false if { [test_compiler_info "clang-*" "c++"] } { set clang_used true - if { [gcc_major_version "clang-*" "c++"] >= 11} { - lappend flags additional_flags=-Wno-non-c-typedef-for-linkage - } +} + +if { [gcc_major_version "clang-*" "c++"] >= 11 + || [gcc_major_version "gcc-*" "c++"] >= 16} { + lappend flags additional_flags=-Wno-non-c-typedef-for-linkage } if {[prepare_for_testing "failed to prepare" $testfile $srcfile $flags]} { -- 2.51.0