rpms/gcc-toolset-16-gcc
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Fix compilation on RISC-V

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Use 32-bit manglings in the libstdc++ nonshared .hidden list (fixes i686)

Do not assert .hidden on _M_release_last_use_cold, which is not emitted on riscv64 nor on i686

Do not assert .hidden on a libstdc++ instantiation that is not emitted below x86-64-v3 (fixes x86_64_v2)

Do not assert .hidden on _Sp_counted_ptr<nullptr_t>::_M_dispose, which is not emitted on riscv64

Do not assert .hidden on _Sp_counted_base<_S_atomic>::_M_destroy, which is not emitted on riscv64

Do not assert .hidden on __to_chars_10_impl<unsigned long>, which is not emitted on riscv64

Do not assert .hidden on __get_leap_second_info, which is not emitted on i686

Refresh the ILP32 _M_visit manglings RH did not regenerate for 16.2.1 (fixes i686)

Set --with-arch_64=x86-64-v2 on v2 arch
This commit is contained in:
Eduard Abdullin 2026-08-31 19:10:47 +00:00 committed by root
parent f0aaafdc4a
commit e0532f7f58
2 changed files with 18 additions and 2 deletions
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6
gcc-toolset-16-gcc.spec
View File

@ -186,7 +186,7 @@ BuildRequires: gcc-toolset-%{gts_ver}-devel
Summary: GCC version %{gcc_major}
Name: %{?scl_prefix}gcc
Version: %{gcc_version}
Release: %{gcc_release}%{?dist}.alma.4
Release: %{gcc_release}%{?dist}.alma.5
# License notes for some of the less obvious ones:
# gcc/doc/cppinternals.texi: Linux-man-pages-copyleft-2-para
# isl: MIT, BSD-2-Clause
@ -3097,7 +3097,7 @@ fi
%endif
%changelog
* Mon Aug 31 2026 Eduard Abdullin <eabdullin@almalinux.org> - 16.2.1-1.alma.4
* Mon Aug 31 2026 Eduard Abdullin <eabdullin@almalinux.org> - 16.2.1-1.alma.5
- Fix compilation on RISC-V
- Use 32-bit manglings in the libstdc++ nonshared .hidden list (fixes i686)
- Do not assert .hidden on _M_release_last_use_cold, which is not emitted on
@ -3111,6 +3111,8 @@ fi
- Do not assert .hidden on __to_chars_10_impl<unsigned long>, which is not
emitted on riscv64
- Do not assert .hidden on __get_leap_second_info, which is not emitted on i686
- Refresh the ILP32 _M_visit manglings RH did not regenerate for 16.2.1 (fixes
i686)
- Set --with-arch_64=x86-64-v2 on v2 arch
* Mon Aug 10 2026 Marek Polacek <polacek@redhat.com> 16.2.1-1

14
gcc16-nonshared-hidden.patch
View File

@ -59,6 +59,20 @@
asm (".hidden _ZNKSt8__format5_SinkIwE13_M_discardingEv");
asm (".hidden _ZNKSt8__format5_SinkIcE13_M_discardingEv");
asm (".hidden _ZNKSt8__format13_Padding_sinkINS_10_Sink_iterIcEEcE13_M_discardingEv");
@@ -178,8 +210,11 @@
asm (".hidden _ZNKSt8__format15__formatter_intIwE13_M_format_intINS_10_Sink_iterIwEEEENSt20basic_format_contextIT_wE8iteratorESt17basic_string_viewIwSt11char_traitsIwEEjRS7_");
asm (".hidden _ZNSt8__format22__write_padded_as_specIwNS_10_Sink_iterIwEEEET0_St17basic_string_viewINSt13type_identityIT_E4typeESt11char_traitsIS8_EEjRSt20basic_format_contextIS3_S6_ERKNS_5_SpecIS6_EENS_6_AlignE");
asm (".hidden _ZNSt8__format10__truncateIcEEjRSt17basic_string_viewIT_St11char_traitsIS2_EEj");
-asm (".hidden _ZNSt16basic_format_argISt20basic_format_contextINSt8__format10_Sink_iterIwEEwEE8_M_visitIZNS1_19_Formatting_scannerIS3_wE13_M_format_argEjEUlRT_E_EEDcOS9_NS1_6_Arg_tE");
-asm (".hidden _ZNSt16basic_format_argISt20basic_format_contextINSt8__format10_Sink_iterIcEEcEE8_M_visitIZNS1_19_Formatting_scannerIS3_cE13_M_format_argEjEUlRT_E_EEDcOS9_NS1_6_Arg_tE");
+/* RH dropped the trailing __format::_Arg_t parameter from this lambda on
+ the LP64 side in 16.2.1 but never regenerated the ILP32 branch, so
+ mirror the change here -- otherwise both manglings are stale on i686. */
+asm (".hidden _ZNSt16basic_format_argISt20basic_format_contextINSt8__format10_Sink_iterIwEEwEE8_M_visitIZNS1_19_Formatting_scannerIS3_wE13_M_format_argEjEUlRT_E_EEDcOS9_");
+asm (".hidden _ZNSt16basic_format_argISt20basic_format_contextINSt8__format10_Sink_iterIcEEcEE8_M_visitIZNS1_19_Formatting_scannerIS3_cE13_M_format_argEjEUlRT_E_EEDcOS9_");
asm (".hidden _ZNSt8__format13_Padding_sinkINS_10_Sink_iterIcEEcE10_M_reserveEj");
asm (".hidden _ZNSt8__format13_Padding_sinkINS_10_Sink_iterIcEEcE7_M_bumpEj");
asm (".hidden _ZNSt8__format13_Padding_sinkINS_10_Sink_iterIwEEwE10_M_reserveEj");
--- a/libstdc++-v3/src/nonshared20/clock.cc
+++ b/libstdc++-v3/src/nonshared20/clock.cc
@@ -33,7 +33,11 @@