* elfcpp.h (enum DT): New enum member DT_GNU_FLAGS_1.
(enum DF_GNU_1): New enum DF_GNU_1 containing DF_GNU_1_UNIQUE.
+2020-12-14 H.J. Lu <hjl.tools@gmail.com>
+ Cary Coutant <ccoutant@gmail.com>
+
+ PR gold/27039
+ * elfcpp.h (SHF): Add SHF_GNU_RETAIN.
+
2020-10-13 H.J. Lu <hongjiu.lu@intel.com>
* elfcpp.h (GNU_PROPERTY_X86_ISA_1_USED): Renamed to ...
* layout.cc (Layout::finish_dynamic_section): Set DF_GNU_1_UNIQUE.
* options.h (class General_options): Handle -z unique, -z nounique.
+2020-12-14 H.J. Lu <hjl.tools@gmail.com>
+ Cary Coutant <ccoutant@gmail.com>
+
+ PR gold/27039
+ * layout.cc (Layout::layout): Strip SHF_GNU_RETAIN.
+ * object.cc (Sized_relobj_file::Sized_relobj_file): Initialize osabi_.
+ (Sized_relobj_file::do_layout): Keep SHF_GNU_RETAIN sections for
+ GNU/FreBSD ELFOSABIs.
+ * object.h (Osabi) New class.
+ (Sized_relobj_file): Add osabi() and osabi_.
+ * testsuite/Makefile.am (check_SCRIPTS): Add retain.sh.
+ (check_DATA): Add retain_1.out retain_2.out.
+ (MOSTLYCLEANFILES): Add retain_1 retain_2.
+ (retain_1.out): New target.
+ (retain_1): Likewise.
+ (retain_1.o): Likewise.
+ (retain_2.out): Likewise.
+ (retain_2): Likewise.
+ (retain_2.o): Likewise.
+ * testsuite/Makefile.in: Regenerate.
+ * testsuite/retain.sh: New file.
+ * testsuite/retain_1.s: Likewise.
+ * testsuite/retain_2.s: Likewise.
+
2020-12-13 Cary Coutant <ccoutant@gmail.com>
PR gold/23539