Commit: Update libiberty sources with changes from the gcc mainline

[Nick Clifton]

Hi Guys,

  I have updated the libiberty sources with the changes from the gcc
  mainline. (Patch attached).  I understand that there is a forthcoming
  patch to the gcc version to fix a LTO problem.  If that is committed
  in the next couple of weeks then I will make sure that it gets into
  the binutils sources (branch and mainline) before the release.

Cheers
  Nick

libiberty/ChangeLog
2020-01-01  Jakub Jelinek  <jakub@redhat.com>

	Update copyright years.

2019-12-06  Tim Ruehsen  <tim.ruehsen@gmx.de>

	* make-relative-prefix.c (split_directories):
	Return early on empty 'name'

2019-11-16  Tim Ruehsen  <tim.ruehsen@gmx.de>

	* cp-demangle.c (d_print_init): Remove const from 4th param.
	(cplus_demangle_fill_name): Initialize d->d_counting.
	(cplus_demangle_fill_extended_operator): Likewise.
	(cplus_demangle_fill_ctor): Likewise.
	(cplus_demangle_fill_dtor): Likewise.
	(d_make_empty): Likewise.
	(d_count_templates_scopes): Remobe const from 3rd param,
	Return on dc->d_counting > 1,
	Increment dc->d_counting.
        * cp-demint.c (cplus_demangle_fill_component): Initialize d->d_counting.
	(cplus_demangle_fill_builtin_type): Likewise.
	(cplus_demangle_fill_operator): Likewise.

2019-11-16  Eduard-Mihai Burtescu  <eddyb@lyken.rs>

	* cplus-dem.c (cplus_demangle): Use rust_demangle directly.
	(rust_demangle): Remove.
	* rust-demangle.c (is_prefixed_hash): Rename to is_legacy_prefixed_hash.
	(parse_lower_hex_nibble): Rename to decode_lower_hex_nibble.
	(parse_legacy_escape): Rename to decode_legacy_escape.
	(rust_is_mangled): Remove.
	(struct rust_demangler): Add.
	(peek): Add.
	(next): Add.
	(struct rust_mangled_ident): Add.
	(parse_ident): Add.
	(rust_demangle_sym): Remove.
	(print_str): Add.
	(PRINT): Add.
	(print_ident): Add.
	(rust_demangle_callback): Add.
	(struct str_buf): Add.
	(str_buf_reserve): Add.
	(str_buf_append): Add.
	(str_buf_demangle_callback): Add.
	(rust_demangle): Add.
	* rust-demangle.h: Remove.

2019-11-15  Miguel Saldivar  <saldivarcher@gmail.com>

	* testsuite/demangle-expected: Fix test.

2019-11-04  Kamlesh Kumar  <kamleshbhalui@gmail.com>

	* cp-demangle.c (d_expr_primary): Handle
	nullptr demangling.
	* testsuite/demangle-expected: Added test.

2019-10-29 Paul Pluzhnikov  <ppluzhnikov@google.com>

	* cp-demangle.c (d_number): Avoid signed int overflow.

2019-10-28  Miguel Saldivar  <saldivarcher@gmail.com>

	* cp-demangle.c (d_print_mod): Add a space before printing `complex`
	and `imaginary`, as opposed to after.
	* testsuite/demangle-expected: Adjust test.

2019-10-03  Eduard-Mihai Burtescu  <eddyb@lyken.rs>

	* rust-demangle.c (looks_like_rust): Remove.
	(rust_is_mangled): Don't check escapes.
	(is_prefixed_hash): Allow 0-9a-f permutations.
	(rust_demangle_sym): Don't bail on unknown escapes.
	* testsuite/rust-demangle-expected: Update 'main::$99$' test.

2019-09-03  Eduard-Mihai Burtescu  <eddyb@lyken.rs>

	* rust-demangle.c (unescape): Remove.
	(parse_lower_hex_nibble): New function.
	(parse_legacy_escape): New function.
	(is_prefixed_hash): Use parse_lower_hex_nibble.
	(looks_like_rust): Use parse_legacy_escape.
	(rust_demangle_sym): Use parse_legacy_escape.
	* testsuite/rust-demangle-expected: Add 'llv$u6d$' test.

2019-08-27  Martin Liska  <mliska@suse.cz>

	PR lto/91478
	* simple-object-elf.c (simple_object_elf_copy_lto_debug_sections):
	First find a WEAK HIDDEN symbol in symbol table that will be
	preserved.  Later, use the symbol name for all removed symbols.

2019-08-12  Martin Liska  <mliska@suse.cz>

	* Makefile.in: Add filedescriptor.c.
	* filedescriptor.c: New file.
	* lrealpath.c (is_valid_fd): Remove.

include/ChangeLog
2020-01-17  Nick Clifton  <nickc@redhat.com>

	* Import from gcc mainline:
	2019-06-10  Martin Liska  <mliska@suse.cz>

	* ansidecl.h (ATTRIBUTE_WARN_UNUSED_RESULT): New macro.
	* libiberty.h (xmalloc): Use it.
	(xrealloc): Likewise.
	(xcalloc): Likewise.
	(xstrdup): Likewise.
	(xstrndup): Likewise.
	(xmemdup): Likewise.

	2019-06-10  Martin Liska  <mliska@suse.cz>

	* ansidecl.h:
	(ATTRIBUTE_RESULT_SIZE_1): Define new macro.
	(ATTRIBUTE_RESULT_SIZE_2): Likewise.
	(ATTRIBUTE_RESULT_SIZE_1_2): Likewise.
	* libiberty.h (xmalloc): Add RESULT_SIZE attribute.
	(xrealloc): Likewise.
	(xcalloc): Likewise.

	2019-11-16  Tim Ruehsen  <tim.ruehsen@gmx.de>

	* demangle.h (struct demangle_component): Add member
	d_counting.

	2019-11-16  Eduard-Mihai Burtescu  <eddyb@lyken.rs>

	* demangle.h (rust_demangle_callback): Add.

	2019-07-18  Eduard-Mihai Burtescu  <eddyb@lyken.rs>

	* demangle.h (rust_is_mangled): Move to libiberty/rust-demangle.h.
	(rust_demangle_sym): Move to libiberty/rust-demangle.h.

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