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0.176-2 - Add elfutils-0.176-xlate-note.patch

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This commit is contained in:
Mark Wielaard 2019-04-30 22:56:31 +02:00
parent d597c797b7
commit 9989c790c6
2 changed files with 491 additions and 2 deletions
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486
elfutils-0.176-xlate-note.patch Normal file
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@ -0,0 +1,486 @@
commit 28b5f578ae772bb2404c3847e4e22ad1c407af54
Author: Mark Wielaard <mark@klomp.org>
Date: Tue Apr 30 13:00:17 2019 +0200
libelf: If xlate can only convert the ELF note header, just do that.
When we started parsing new style ELF_T_NHDR8 notes we added extra
checks on alignment and padding. When those failed we would stop
converting and just return the rest of the ELF Note unconverted.
In the case were we just had enough data for just the ELF Note header
and the destionation and source weren't the same we would then
accidentially throw away the Note header conversion we just did.
Fix that by indicating we did correctly convert just the header.
Adds testcase that compares parsing ELF notes with gelf_getnote
and parsing the raw data by hand using elf32_xlatetom using just
the Note header and ignoring the (raw) note data.
Signed-off-by: Mark Wielaard <mark@klomp.org>
diff --git a/libelf/note_xlate.h b/libelf/note_xlate.h
index bc9950f..7e2784b 100644
--- a/libelf/note_xlate.h
+++ b/libelf/note_xlate.h
@@ -47,13 +47,25 @@ elf_cvt_note (void *dest, const void *src, size_t len, int encode,
note_len += n->n_namesz;
note_len = nhdr8 ? NOTE_ALIGN8 (note_len) : NOTE_ALIGN4 (note_len);
if (note_len > len || note_len < sizeof *n)
- break;
+ {
+ /* Header was translated, nothing else. */
+ len -= sizeof *n;
+ src += sizeof *n;
+ dest += sizeof *n;
+ break;
+ }
/* data as a whole needs to be aligned. */
note_len += n->n_descsz;
note_len = nhdr8 ? NOTE_ALIGN8 (note_len) : NOTE_ALIGN4 (note_len);
if (note_len > len || note_len < sizeof *n)
- break;
+ {
+ /* Header was translated, nothing else. */
+ len -= sizeof *n;
+ src += sizeof *n;
+ dest += sizeof *n;
+ break;
+ }
/* Copy or skip the note data. */
size_t note_data_len = note_len - sizeof *n;
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 1b0c7d3..498c1db 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -60,7 +60,7 @@ check_PROGRAMS = arextract arsymtest newfile saridx scnnames sectiondump \
fillfile dwarf_default_lower_bound dwarf-die-addr-die \
get-units-invalid get-units-split attr-integrate-skel \
all-dwarf-ranges unit-info next_cfi \
- elfcopy addsections
+ elfcopy addsections xlate_notes
asm_TESTS = asm-tst1 asm-tst2 asm-tst3 asm-tst4 asm-tst5 \
asm-tst6 asm-tst7 asm-tst8 asm-tst9
@@ -159,7 +159,7 @@ TESTS = run-arextract.sh run-arsymtest.sh run-ar.sh newfile test-nlist \
run-next-cfi.sh run-next-cfi-self.sh \
run-copyadd-sections.sh run-copymany-sections.sh \
run-typeiter-many.sh run-strip-test-many.sh \
- run-strip-version.sh
+ run-strip-version.sh run-xlate-note.sh
if !BIARCH
export ELFUTILS_DISABLE_BIARCH = 1
@@ -423,7 +423,8 @@ EXTRA_DIST = run-arextract.sh run-arsymtest.sh run-ar.sh \
testfile-debug-rel-ppc64-g.o.bz2 \
testfile-debug-rel-ppc64-z.o.bz2 \
testfile-debug-rel-ppc64.o.bz2 \
- run-strip-version.sh testfile-version.bz2
+ run-strip-version.sh testfile-version.bz2 \
+ run-xlate-note.sh
if USE_VALGRIND
valgrind_cmd='valgrind -q --leak-check=full --error-exitcode=1'
@@ -593,6 +594,7 @@ unit_info_LDADD = $(libdw)
next_cfi_LDADD = $(libelf) $(libdw)
elfcopy_LDADD = $(libelf)
addsections_LDADD = $(libelf)
+xlate_notes_LDADD = $(libelf)
# We want to test the libelf header against the system elf.h header.
# Don't include any -I CPPFLAGS. Except when we install our own elf.h.
diff --git a/tests/run-xlate-note.sh b/tests/run-xlate-note.sh
new file mode 100755
index 0000000..a907418
--- /dev/null
+++ b/tests/run-xlate-note.sh
@@ -0,0 +1,93 @@
+# Copyright (C) 2019 Red Hat, Inc.
+# This file is part of elfutils.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# elfutils is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+. $srcdir/test-subr.sh
+
+testfiles testfileppc32
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfileppc32 << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfileppc64
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfileppc64 << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfiles390
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfiles390 << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfiles390x
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfiles390x << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfileaarch64
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfileaarch64 << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfilearm
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfilearm << EOF
+Notes in section 2:
+type: 1,1, namesz: 4,4, descsz: 16,16
+Notes in section 3:
+type: 3,3, namesz: 4,4, descsz: 20,20
+EOF
+
+testfiles testfile_gnu_props.32be.o
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfile_gnu_props.32be.o << EOF
+Notes in section 4:
+type: 5,5, namesz: 4,4, descsz: 12,12
+type: 5,5, namesz: 4,4, descsz: 8,8
+EOF
+
+testfiles testfile_gnu_props.32le.o
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfile_gnu_props.32le.o << EOF
+Notes in section 4:
+type: 5,5, namesz: 4,4, descsz: 12,12
+type: 5,5, namesz: 4,4, descsz: 8,8
+EOF
+
+testfiles testfile_gnu_props.64be.o
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfile_gnu_props.64be.o << EOF
+Notes in section 4:
+type: 5,5, namesz: 4,4, descsz: 16,16
+type: 5,5, namesz: 4,4, descsz: 8,8
+EOF
+
+testfiles testfile_gnu_props.64le.o
+testrun_compare ${abs_top_builddir}/tests/xlate_notes testfile_gnu_props.64le.o << EOF
+Notes in section 4:
+type: 5,5, namesz: 4,4, descsz: 16,16
+type: 5,5, namesz: 4,4, descsz: 8,8
+EOF
diff --git a/tests/xlate_notes.c b/tests/xlate_notes.c
new file mode 100644
index 0000000..90a4ae2
--- /dev/null
+++ b/tests/xlate_notes.c
@@ -0,0 +1,157 @@
+/* Test program for extracting ELF Note headers and getting whole notes.
+ Copyright (C) 2019 Red Hat, Inc.
+ This file is part of elfutils.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ elfutils is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include ELFUTILS_HEADER(elf)
+#include <gelf.h>
+
+int
+main (int argc, char *argv[])
+{
+ if (argc != 2)
+ {
+ printf ("No ELF file given as argument\n");
+ exit (1);
+ }
+
+ const char *fname = argv[1];
+
+ // Initialize libelf.
+ elf_version (EV_CURRENT);
+
+ /* Read the ELF from disk now. */
+ int fd = open (fname, O_RDONLY);
+ if (fd == -1)
+ {
+ printf ("cannot open '%s': %s\n", fname, strerror (errno));
+ exit (1);
+ }
+
+ Elf *elf = elf_begin (fd, ELF_C_READ, NULL);
+ if (elf == NULL)
+ {
+ printf ("cannot create ELF descriptor: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ GElf_Ehdr ehdr;
+ if (gelf_getehdr (elf, &ehdr) == NULL)
+ {
+ printf ("cannot get Ehdr: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ /* Search for all SHT_NOTE sections. */
+ Elf_Scn *scn = NULL;
+ while ((scn = elf_nextscn (elf, scn)) != NULL)
+ {
+ /* Get the header. */
+ GElf_Shdr shdr;
+ if (gelf_getshdr (scn, &shdr) == NULL)
+ {
+ printf ("couldn't get shdr: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ if (shdr.sh_type == SHT_NOTE)
+ {
+ printf ("Notes in section %zd:\n", elf_ndxscn (scn));
+
+ Elf_Data *raw = elf_rawdata (scn, NULL);
+ if (raw == NULL)
+ {
+ printf ("couldn't get raw data: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ Elf_Data *data = elf_getdata (scn, NULL);
+ if (data == NULL)
+ {
+ printf ("couldn't get data: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ size_t off = 0;
+ size_t next;
+ GElf_Nhdr nhdr;
+ size_t n_off;
+ size_t d_off;
+ while ((next = gelf_getnote (data, off, &nhdr, &n_off, &d_off)) > 0)
+ {
+ /* Now just get the note header "raw" (don't
+ copy/translate the note data). This only handles
+ traditional GNU ELF Notes, so we still use the next
+ from gelf_getnote (padding is different for new style
+ ELF_T_NHDR8 notes). */
+ Elf32_Nhdr nh;
+ Elf_Data src =
+ {
+ .d_version = EV_CURRENT, .d_type = ELF_T_NHDR,
+ .d_size = sizeof nh
+ };
+ Elf_Data dst = src;
+ src.d_buf = raw->d_buf + off;
+ dst.d_buf = &nh;
+
+ if (elf32_xlatetom (&dst, &src, ehdr.e_ident[EI_DATA]) == NULL)
+ {
+ printf ("couldn't xlate note: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ printf ("type: %" PRId32 ",%" PRId32
+ ", namesz: %" PRId32 ",%" PRId32
+ ", descsz: %" PRId32 ",%" PRId32 "\n",
+ nhdr.n_type, nh.n_type,
+ nhdr.n_namesz, nh.n_namesz,
+ nhdr.n_descsz, nh.n_descsz);
+
+ if (nhdr.n_type != nh.n_type
+ || nhdr.n_namesz != nh.n_namesz
+ || nhdr.n_descsz != nh.n_descsz)
+ {
+ printf ("Nhdrs not equal!\n");
+ exit (1);
+ }
+
+ off = next;
+ }
+ }
+
+ }
+
+ if (elf_end (elf) != 0)
+ {
+ printf ("failure in elf_end: %s\n", elf_errmsg (-1));
+ exit (1);
+ }
+
+ close (fd);
+
+ return 0;
+}
diff -ur elfutils-0.176.orig/tests/Makefile.in elfutils-0.176/tests/Makefile.in
--- elfutils-0.176.orig/tests/Makefile.in 2019-04-30 22:42:49.534655124 +0200
+++ elfutils-0.176/tests/Makefile.in 2019-04-30 22:46:30.046656790 +0200
@@ -131,8 +131,8 @@
get-units-invalid$(EXEEXT) get-units-split$(EXEEXT) \
attr-integrate-skel$(EXEEXT) all-dwarf-ranges$(EXEEXT) \
unit-info$(EXEEXT) next_cfi$(EXEEXT) elfcopy$(EXEEXT) \
- addsections$(EXEEXT) $(am__EXEEXT_1) $(am__EXEEXT_2) \
- $(am__EXEEXT_4)
+ addsections$(EXEEXT) xlate_notes$(EXEEXT) $(am__EXEEXT_1) \
+ $(am__EXEEXT_2) $(am__EXEEXT_4)
@BIARCH_TRUE@am__append_5 = backtrace-child-biarch
TESTS = run-arextract.sh run-arsymtest.sh run-ar.sh newfile$(EXEEXT) \
test-nlist$(EXEEXT) update1$(EXEEXT) update2$(EXEEXT) \
@@ -211,8 +211,8 @@
run-unit-info.sh run-reloc-bpf.sh run-next-cfi.sh \
run-next-cfi-self.sh run-copyadd-sections.sh \
run-copymany-sections.sh run-typeiter-many.sh \
- run-strip-test-many.sh run-strip-version.sh $(am__EXEEXT_2) \
- $(am__append_8) $(am__EXEEXT_5)
+ run-strip-test-many.sh run-strip-version.sh run-xlate-note.sh \
+ $(am__EXEEXT_2) $(am__append_8) $(am__EXEEXT_5)
@STANDALONE_FALSE@am__append_6 = msg_tst system-elf-libelf-test
@STANDALONE_FALSE@am__append_7 = msg_tst system-elf-libelf-test
@LZMA_TRUE@am__append_8 = run-readelf-s.sh run-dwflsyms.sh
@@ -606,6 +606,9 @@
vendorelf_SOURCES = vendorelf.c
vendorelf_OBJECTS = vendorelf.$(OBJEXT)
vendorelf_DEPENDENCIES = $(am__DEPENDENCIES_2)
+xlate_notes_SOURCES = xlate_notes.c
+xlate_notes_OBJECTS = xlate_notes.$(OBJEXT)
+xlate_notes_DEPENDENCIES = $(am__DEPENDENCIES_2)
zstrptr_SOURCES = zstrptr.c
zstrptr_OBJECTS = zstrptr.$(OBJEXT)
zstrptr_DEPENDENCIES = $(am__DEPENDENCIES_2)
@@ -683,7 +686,7 @@
./$(DEPDIR)/update2.Po ./$(DEPDIR)/update3.Po \
./$(DEPDIR)/update4.Po ./$(DEPDIR)/varlocs.Po \
./$(DEPDIR)/vdsosyms.Po ./$(DEPDIR)/vendorelf.Po \
- ./$(DEPDIR)/zstrptr.Po
+ ./$(DEPDIR)/xlate_notes.Po ./$(DEPDIR)/zstrptr.Po
am__mv = mv -f
AM_V_lt = $(am__v_lt_@AM_V@)
am__v_lt_ = $(am__v_lt_@AM_DEFAULT_V@)
@@ -726,7 +729,8 @@
showptable.c strptr.c system-elf-libelf-test.c \
test-elf_cntl_gelf_getshdr.c test-flag-nobits.c test-nlist.c \
typeiter.c typeiter2.c unit-info.c update1.c update2.c \
- update3.c update4.c varlocs.c vdsosyms.c vendorelf.c zstrptr.c
+ update3.c update4.c varlocs.c vdsosyms.c vendorelf.c \
+ xlate_notes.c zstrptr.c
DIST_SOURCES = addrcfi.c addrscopes.c addsections.c aggregate_size.c \
all-dwarf-ranges.c alldts.c allfcts.c allregs.c arextract.c \
arls.c arsymtest.c asm-tst1.c asm-tst2.c asm-tst3.c asm-tst4.c \
@@ -752,7 +756,8 @@
showptable.c strptr.c system-elf-libelf-test.c \
test-elf_cntl_gelf_getshdr.c test-flag-nobits.c test-nlist.c \
typeiter.c typeiter2.c unit-info.c update1.c update2.c \
- update3.c update4.c varlocs.c vdsosyms.c vendorelf.c zstrptr.c
+ update3.c update4.c varlocs.c vdsosyms.c vendorelf.c \
+ xlate_notes.c zstrptr.c
am__can_run_installinfo = \
case $$AM_UPDATE_INFO_DIR in \
n|no|NO) false;; \
@@ -1405,7 +1410,8 @@
testfile-debug-rel-ppc64-g.o.bz2 \
testfile-debug-rel-ppc64-z.o.bz2 \
testfile-debug-rel-ppc64.o.bz2 \
- run-strip-version.sh testfile-version.bz2
+ run-strip-version.sh testfile-version.bz2 \
+ run-xlate-note.sh
@USE_VALGRIND_TRUE@valgrind_cmd = 'valgrind -q --leak-check=full --error-exitcode=1'
installed_TESTS_ENVIRONMENT = libdir=$(DESTDIR)$(libdir); \
@@ -1559,6 +1565,7 @@
next_cfi_LDADD = $(libelf) $(libdw)
elfcopy_LDADD = $(libelf)
addsections_LDADD = $(libelf)
+xlate_notes_LDADD = $(libelf)
# We want to test the libelf header against the system elf.h header.
# Don't include any -I CPPFLAGS. Except when we install our own elf.h.
@@ -2011,6 +2018,10 @@
@rm -f vendorelf$(EXEEXT)
$(AM_V_CCLD)$(LINK) $(vendorelf_OBJECTS) $(vendorelf_LDADD) $(LIBS)
+xlate_notes$(EXEEXT): $(xlate_notes_OBJECTS) $(xlate_notes_DEPENDENCIES) $(EXTRA_xlate_notes_DEPENDENCIES)
+ @rm -f xlate_notes$(EXEEXT)
+ $(AM_V_CCLD)$(LINK) $(xlate_notes_OBJECTS) $(xlate_notes_LDADD) $(LIBS)
+
zstrptr$(EXEEXT): $(zstrptr_OBJECTS) $(zstrptr_DEPENDENCIES) $(EXTRA_zstrptr_DEPENDENCIES)
@rm -f zstrptr$(EXEEXT)
$(AM_V_CCLD)$(LINK) $(zstrptr_OBJECTS) $(zstrptr_LDADD) $(LIBS)
@@ -2124,6 +2135,7 @@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/varlocs.Po@am__quote@ # am--include-marker
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/vdsosyms.Po@am__quote@ # am--include-marker
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/vendorelf.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/xlate_notes.Po@am__quote@ # am--include-marker
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/zstrptr.Po@am__quote@ # am--include-marker
$(am__depfiles_remade):
@@ -3732,6 +3744,13 @@
--log-file $$b.log --trs-file $$b.trs \
$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
"$$tst" $(AM_TESTS_FD_REDIRECT)
+run-xlate-note.sh.log: run-xlate-note.sh
+ @p='run-xlate-note.sh'; \
+ b='run-xlate-note.sh'; \
+ $(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+ --log-file $$b.log --trs-file $$b.trs \
+ $(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+ "$$tst" $(AM_TESTS_FD_REDIRECT)
msg_tst.log: msg_tst$(EXEEXT)
@p='msg_tst$(EXEEXT)'; \
b='msg_tst'; \
@@ -4027,6 +4046,7 @@
-rm -f ./$(DEPDIR)/varlocs.Po
-rm -f ./$(DEPDIR)/vdsosyms.Po
-rm -f ./$(DEPDIR)/vendorelf.Po
+ -rm -f ./$(DEPDIR)/xlate_notes.Po
-rm -f ./$(DEPDIR)/zstrptr.Po
-rm -f Makefile
distclean-am: clean-am distclean-compile distclean-generic \
@@ -4176,6 +4196,7 @@
-rm -f ./$(DEPDIR)/varlocs.Po
-rm -f ./$(DEPDIR)/vdsosyms.Po
-rm -f ./$(DEPDIR)/vendorelf.Po
+ -rm -f ./$(DEPDIR)/xlate_notes.Po
-rm -f ./$(DEPDIR)/zstrptr.Po
-rm -f Makefile
maintainer-clean-am: distclean-am maintainer-clean-generic

7
elfutils.spec
View File

@ -1,7 +1,7 @@
Name: elfutils
Summary: A collection of utilities and DSOs to handle ELF files and DWARF data
Version: 0.176
%global baserelease 1
%global baserelease 2
URL: http://elfutils.org/
%global source_url ftp://sourceware.org/pub/elfutils/%{version}/
License: GPLv3+ and (GPLv2+ or LGPLv3+)
@ -21,6 +21,7 @@ Source: %{?source_url}%{name}-%{version}.tar.bz2
# Patches
Patch1: elfutils-0.176-gcc-pr88835.patch
Patch2: elfutils-0.176-pt-gnu-prop.patch
Patch3: elfutils-0.176-xlate-note.patch
Requires: elfutils-libelf%{depsuffix} = %{version}-%{release}
Requires: elfutils-libs%{depsuffix} = %{version}-%{release}
@ -184,6 +185,7 @@ profiling) of processes.
# Apply patches
%patch1 -p1 -b .gcc-pr88835
%patch2 -p1 -b .pt-gnu-prop
%patch3 -p1 -b .xlate-note
# In case the above patches added any new test scripts, make sure they
# are executable.
@ -316,9 +318,10 @@ fi
%endif
%changelog
* Tue Apr 30 2019 Mark Wielaard <mjw@fedoraproject.org>
* Tue Apr 30 2019 Mark Wielaard <mjw@fedoraproject.org> - 0.176-2
- Update elfutils-0.176-gcc-pr88835.patch.
- Add elfutils-0.176-pt-gnu-prop.patch
- Add elfutils-0.176-xlate-note.patch
* Fri Feb 15 2019 Mark Wielaard <mjw@fedoraproject.org> - 0.176-1
- New upstream release.