https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116080
--- Comment #22 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
(In reply to Thomas Schwinge from comment #21)
> (In reply to GCC Commits from comment #20)
> > commit r15-5319-ga064fed18a02696586cd8c182fd56c571c9438c1
> > Author: Christophe Lyon <christophe.l...@linaro.org>
> > Date: Thu Oct 3 13:37:16 2024 +0000
> >
> > testsuite: Fix tail_call and musttail effective targets [PR116080]
>
> I'm noting that (at least) in powerpc64le-unknown-linux-gnu testing, this
> however again turns a number of test cases from PASS to UNSUPPORTED, due to:
>
> musttail2543711.c: In function 'void bar()':
> musttail2543711.c:3:82: error: cannot tail-call: target is not able to
> optimize the call into a sibling call
>
> Etc.
>
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail1.c -std=c++11[-(test
> for excess errors)-]
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail1.c -std=c++17[-(test
> for excess errors)-]
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail1.c -std=c++26[-(test
> for excess errors)-]
>
> [-PASS: c-c++-common/musttail2.c -std=c++11 (test for errors, line
> 17)-]
> [-PASS: c-c++-common/musttail2.c -std=c++11 (test for errors, line
> 24)-]
> [-PASS: c-c++-common/musttail2.c -std=c++11 (test for errors, line
> 32)-]
> [-PASS:-}{+UNSUPPORTED:+} c-c++-common/musttail2.c -std=c++11[-(test
> for excess errors)-]
> [-PASS: c-c++-common/musttail2.c -std=c++17 (test for errors, line
> 17)-]
> [-PASS: c-c++-common/musttail2.c -std=c++17 (test for errors, line
> 24)-]
> [-PASS: c-c++-common/musttail2.c -std=c++17 (test for errors, line
> 32)-]
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail2.c -std=c++17[-(test
> for excess errors)-]
> [-PASS: c-c++-common/musttail2.c -std=c++26 (test for errors, line
> 17)-]
> [-PASS: c-c++-common/musttail2.c -std=c++26 (test for errors, line
> 24)-]
> [-PASS: c-c++-common/musttail2.c -std=c++26 (test for errors, line
> 32)-]
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail2.c -std=c++26[-(test
> for excess errors)-]
>
> [-PASS: c-c++-common/musttail4.c -std=c++11 (test for errors, line
> 16)-]
> [-PASS:-}{+UNSUPPORTED:+} c-c++-common/musttail4.c -std=c++11[-(test
> for excess errors)-]
> [-PASS: c-c++-common/musttail4.c -std=c++17 (test for errors, line
> 16)-]
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail4.c -std=c++17[-(test
> for excess errors)-]
> [-PASS: c-c++-common/musttail4.c -std=c++26 (test for errors, line
> 16)-]
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail4.c -std=c++26[-(test
> for excess errors)-]
>
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail7.c -std=c++11[-(test
> for excess errors)-]
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail7.c -std=c++17[-(test
> for excess errors)-]
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail7.c -std=c++26[-(test
> for excess errors)-]
>
> [-PASS: c-c++-common/musttail8.c -std=c++11 (test for errors, line
> 16)-]
> [-PASS: c-c++-common/musttail8.c -std=c++11 (test for errors, line 7)-]
> [-PASS:-}{+UNSUPPORTED:+} c-c++-common/musttail8.c -std=c++11[-(test
> for excess errors)-]
> [-PASS: c-c++-common/musttail8.c -std=c++17 (test for errors, line
> 16)-]
> [-PASS: c-c++-common/musttail8.c -std=c++17 (test for errors, line 7)-]
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail8.c -std=c++17[-(test
> for excess errors)-]
> [-PASS: c-c++-common/musttail8.c -std=c++26 (test for errors, line
> 16)-]
> [-PASS: c-c++-common/musttail8.c -std=c++26 (test for errors, line 7)-]
> [-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail8.c -std=c++26[-(test
> for excess errors)-]
>
> [-PASS: g++.dg/musttail10.C (test for errors, line 11)-]
> [-PASS: g++.dg/musttail10.C (test for errors, line 15)-]
> [-PASS: g++.dg/musttail10.C (test for errors, line 20)-]
> [-PASS: g++.dg/musttail10.C (test for errors, line 24)-]
> [-PASS: g++.dg/musttail10.C (test for errors, line 7)-]
> [-PASS: g++.dg/musttail10.C-]{+UNSUPPORTED:+}[-(test for excess errors)-]
>
> [-PASS:-]{+UNSUPPORTED:+} g++.dg/musttail11.C[-(test for excess errors)-]
>
> [-PASS: g++.dg/musttail9.C (test for errors, line 9)-]
> [-PASS:-]{+UNSUPPORTED:+} g++.dg/musttail9.C[-(test for excess errors)-]
..., also:
[-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail1.c -Wc++-compat[-(test for
excess errors)-]
[-PASS: c-c++-common/musttail2.c -Wc++-compat (test for errors, line
17)-]
[-PASS: c-c++-common/musttail2.c -Wc++-compat (test for errors, line
24)-]
[-PASS: c-c++-common/musttail2.c -Wc++-compat (test for errors, line
32)-]
[-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail2.c -Wc++-compat[-(test for
excess errors)-]
[-PASS: c-c++-common/musttail4.c -Wc++-compat (test for errors, line
16)-]
[-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail4.c -Wc++-compat[-(test for
excess errors)-]
[-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail7.c -Wc++-compat[-(test for
excess errors)-]
[-PASS: c-c++-common/musttail8.c -Wc++-compat (test for errors, line
16)-]
[-PASS: c-c++-common/musttail8.c -Wc++-compat (test for errors, line
7)-]
[-PASS:-]{+UNSUPPORTED:+} c-c++-common/musttail8.c -Wc++-compat[-(test for
excess errors)-]
[-PASS:-]{+UNSUPPORTED:+} gcc.dg/plugin/must-tail-call-1.c
-fplugin=./must_tail_call_plugin.so[-(test for excess errors)-]
[-PASS: gcc.dg/plugin/must-tail-call-2.c
-fplugin=./must_tail_call_plugin.so (test for errors, line 18)-]
[-PASS: gcc.dg/plugin/must-tail-call-2.c
-fplugin=./must_tail_call_plugin.so (test for errors, line 33)-]
[-PASS: gcc.dg/plugin/must-tail-call-2.c
-fplugin=./must_tail_call_plugin.so (test for errors, line 40)-]
[-PASS: gcc.dg/plugin/must-tail-call-2.c
-fplugin=./must_tail_call_plugin.so (test for errors, line 49)-]
[-PASS: gcc.dg/plugin/must-tail-call-2.c
-fplugin=./must_tail_call_plugin.so (test for errors, line 58)-]
[-PASS:-]{+UNSUPPORTED:+} gcc.dg/plugin/must-tail-call-2.c
-fplugin=./must_tail_call_plugin.so[-(test for excess errors)-]
