libbacktrace: update to current version from GCC trunk

This adds DWARF 5 support as well as an enhanced testsuite.

Patch assembled by Than McIntosh.

Makefile.am

@@ -1,5 +1,5 @@
 # Makefile.am -- Backtrace Makefile.
-# Copyright (C) 2012-2018 Free Software Foundation, Inc.
+# Copyright (C) 2012-2019 Free Software Foundation, Inc.
 
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
@@ -31,6 +31,8 @@
 
 ACLOCAL_AMFLAGS = -I config
 
+AM_CPPFLAGS =
+
 AM_CFLAGS = $(EXTRA_FLAGS) $(WARN_FLAGS) $(PIC_FLAG)
 
 include_HEADERS = backtrace.h backtrace-supported.h
@@ -83,77 +85,279 @@ libbacktrace_la_DEPENDENCIES = $(libbacktrace_la_LIBADD)
 
 # Testsuite.
 
+# Add test to this variable, if you want it to be build.
 check_PROGRAMS =
-CLEANFILES =
 
-TESTS = $(check_PROGRAMS)
+# Add test to this variable, if you want it to be run.
+TESTS =
+
+# Add test to this variable, if you want it to be build and run.
+BUILDTESTS =
 
 if NATIVE
+check_LTLIBRARIES = libbacktrace_alloc.la
+
+libbacktrace_alloc_la_SOURCES = $(libbacktrace_la_SOURCES)
+libbacktrace_alloc_la_LIBADD = $(BACKTRACE_FILE) $(FORMAT_FILE) read.lo alloc.lo
+
+libbacktrace_alloc_la_DEPENDENCIES = $(libbacktrace_alloc_la_LIBADD)
+
+check_LTLIBRARIES += libbacktrace_noformat.la
+
+libbacktrace_noformat_la_SOURCES = $(libbacktrace_la_SOURCES)
+libbacktrace_noformat_la_LIBADD = $(BACKTRACE_FILE) $(VIEW_FILE) $(ALLOC_FILE)
+
+libbacktrace_noformat_la_DEPENDENCIES = $(libbacktrace_noformat_la_LIBADD)
+
+if HAVE_ELF
+if HAVE_OBJCOPY_DEBUGLINK
+
+TEST_BUILD_ID_DIR=$(abs_builddir)/usr/lib/debug/.build-id/
+
+check_LTLIBRARIES += libbacktrace_elf_for_test.la
+
+libbacktrace_elf_for_test_la_SOURCES = $(libbacktrace_la_SOURCES)
+libbacktrace_elf_for_test_la_LIBADD = $(BACKTRACE_FILE) elf_for_test.lo \
+	$(VIEW_FILE) $(ALLOC_FILE)
+
+elf_for_test.c: elf.c
+	SEARCH='^#define SYSTEM_BUILD_ID_DIR.*$$'; \
+	REPLACE="#define SYSTEM_BUILD_ID_DIR \"$(TEST_BUILD_ID_DIR)\""; \
+	$(SED) "s%$$SEARCH%$$REPLACE%" \
+		$< \
+		> $@.tmp
+	mv $@.tmp $@
+
+endif HAVE_OBJCOPY_DEBUGLINK
+endif HAVE_ELF
+
+elf_%.c: elf.c
+	SEARCH='#error "Unknown BACKTRACE_ELF_SIZE"'; \
+	REPLACE='#undef BACKTRACE_ELF_SIZE\
+	#define BACKTRACE_ELF_SIZE'; \
+	$(SED) "s/^$$SEARCH\$$/$$REPLACE $*/" \
+		$< \
+		> $@.tmp
+	mv $@.tmp $@
+
+xcoff_%.c: xcoff.c
+	SEARCH='#error "Unknown BACKTRACE_XCOFF_SIZE"'; \
+	REPLACE='#undef BACKTRACE_XCOFF_SIZE\
+	#define BACKTRACE_XCOFF_SIZE'; \
+	$(SED) "s/^$$SEARCH\$$/$$REPLACE $*/" \
+		$< \
+		> $@.tmp
+	mv $@.tmp $@
+
+test_elf_32_SOURCES = test_format.c testlib.c
+test_elf_32_LDADD = libbacktrace_noformat.la elf_32.lo
+
+BUILDTESTS += test_elf_32
+
+test_elf_64_SOURCES = test_format.c testlib.c
+test_elf_64_LDADD = libbacktrace_noformat.la elf_64.lo
+
+BUILDTESTS += test_elf_64
+
+test_xcoff_32_SOURCES = test_format.c testlib.c
+test_xcoff_32_LDADD = libbacktrace_noformat.la xcoff_32.lo
+
+BUILDTESTS += test_xcoff_32
+
+test_xcoff_64_SOURCES = test_format.c testlib.c
+test_xcoff_64_LDADD = libbacktrace_noformat.la xcoff_64.lo
+
+BUILDTESTS += test_xcoff_64
+
+test_pecoff_SOURCES = test_format.c testlib.c
+test_pecoff_LDADD = libbacktrace_noformat.la pecoff.lo
+
+BUILDTESTS += test_pecoff
+
+test_unknown_SOURCES = test_format.c testlib.c
+test_unknown_LDADD = libbacktrace_noformat.la unknown.lo
+
+BUILDTESTS += test_unknown
+
+unittest_SOURCES = unittest.c testlib.c
+unittest_LDADD = libbacktrace.la
+
+BUILDTESTS += unittest
+
+unittest_alloc_SOURCES = $(unittest_SOURCES)
+unittest_alloc_LDADD = libbacktrace_alloc.la
+
+BUILDTESTS += unittest_alloc
+
+check_LTLIBRARIES += libbacktrace_instrumented_alloc.la
+
+libbacktrace_instrumented_alloc_la_SOURCES = $(libbacktrace_la_SOURCES)
+libbacktrace_instrumented_alloc_la_LIBADD = $(BACKTRACE_FILE) $(FORMAT_FILE) \
+	read.lo instrumented_alloc.lo
+
+libbacktrace_instrumented_alloc_la_DEPENDENCIES = \
+	$(libbacktrace_instrumented_alloc_la_LIBADD)
+
+instrumented_alloc.lo: alloc.c
+
+allocfail_SOURCES = allocfail.c testlib.c
+allocfail_LDADD = libbacktrace_instrumented_alloc.la
+
+check_PROGRAMS += allocfail
+
+allocfail.sh: allocfail
+
+TESTS += allocfail.sh
+
+if HAVE_ELF
+if HAVE_OBJCOPY_DEBUGLINK
+
+b2test_SOURCES = $(btest_SOURCES)
+b2test_CFLAGS = $(btest_CFLAGS)
+b2test_LDFLAGS = -Wl,--build-id
+b2test_LDADD = libbacktrace_elf_for_test.la
+
+check_PROGRAMS += b2test
+TESTS += b2test_buildid
+
+if HAVE_DWZ
+
+b3test_SOURCES = $(btest_SOURCES)
+b3test_CFLAGS = $(btest_CFLAGS)
+b3test_LDFLAGS = -Wl,--build-id
+b3test_LDADD = libbacktrace_elf_for_test.la
+
+check_PROGRAMS += b3test
+TESTS += b3test_dwz_buildid
+
+endif HAVE_DWZ
+
+endif HAVE_OBJCOPY_DEBUGLINK
+endif HAVE_ELF
 
 btest_SOURCES = btest.c testlib.c
 btest_CFLAGS = $(AM_CFLAGS) -g -O
 btest_LDADD = libbacktrace.la
 
-check_PROGRAMS += btest
+BUILDTESTS += btest
+
+if HAVE_ELF
+
+btest_lto_SOURCES = btest.c testlib.c
+btest_lto_CFLAGS = $(AM_CFLAGS) -g -O -flto
+btest_lto_LDADD = libbacktrace.la
+
+BUILDTESTS += btest_lto
+
+endif HAVE_ELF
+
+btest_alloc_SOURCES = $(btest_SOURCES)
+btest_alloc_CFLAGS = $(btest_CFLAGS)
+btest_alloc_LDADD = libbacktrace_alloc.la
+
+BUILDTESTS += btest_alloc
+
+if HAVE_DWZ
 
-btest_static_SOURCES = btest.c testlib.c
-btest_static_CFLAGS = $(AM_CFLAGS) -g -O
-btest_static_LDADD = libbacktrace.la
-btest_static_LDFLAGS = -static-libtool-libs
+%_dwz: %
+	rm -f $@ $@_common.debug
+	cp $< $@_1
+	cp $< $@_2
+	$(DWZ) -m $@_common.debug $@_1 $@_2
+	rm -f $@_2
+	mv $@_1 $@
 
-check_PROGRAMS += btest_static
+TESTS += btest_dwz
+
+if HAVE_OBJCOPY_DEBUGLINK
+
+TESTS += btest_dwz_gnudebuglink
+
+endif HAVE_OBJCOPY_DEBUGLINK
+
+endif HAVE_DWZ
 
 stest_SOURCES = stest.c
 stest_LDADD = libbacktrace.la
 
-check_PROGRAMS += stest
+BUILDTESTS += stest
+
+stest_alloc_SOURCES = $(stest_SOURCES)
+stest_alloc_LDADD = libbacktrace_alloc.la
+
+BUILDTESTS += stest_alloc
+
+if HAVE_ELF
 
 ztest_SOURCES = ztest.c testlib.c
 ztest_CFLAGS = -DSRCDIR=\"$(srcdir)\"
 ztest_LDADD = libbacktrace.la
+ztest_alloc_LDADD = libbacktrace_alloc.la
 
 if HAVE_ZLIB
 ztest_LDADD += -lz
+ztest_alloc_LDADD += -lz
 endif
 ztest_LDADD += $(CLOCK_GETTIME_LINK)
+ztest_alloc_LDADD += $(CLOCK_GETTIME_LINK)
+
+BUILDTESTS += ztest
+
+ztest_alloc_SOURCES = $(ztest_SOURCES)
+ztest_alloc_CFLAGS = $(ztest_CFLAGS)
 
-check_PROGRAMS += ztest
+BUILDTESTS += ztest_alloc
+
+endif HAVE_ELF
 
 edtest_SOURCES = edtest.c edtest2_build.c testlib.c
 edtest_LDADD = libbacktrace.la
 
-check_PROGRAMS += edtest
+BUILDTESTS += edtest
+
+edtest_alloc_SOURCES = $(edtest_SOURCES)
+edtest_alloc_LDADD = libbacktrace_alloc.la
+
+BUILDTESTS += edtest_alloc
 
 edtest2_build.c: gen_edtest2_build; @true
 gen_edtest2_build: $(srcdir)/edtest2.c
 	cat $(srcdir)/edtest2.c > tmp-edtest2_build.c
 	$(SHELL) $(srcdir)/move-if-change tmp-edtest2_build.c edtest2_build.c
 	echo timestamp > $@
 
-CLEANFILES += edtest2_build.c gen_edtest2_build
-
 if HAVE_PTHREAD
 
-check_PROGRAMS += ttest
+BUILDTESTS += ttest
 
 ttest_SOURCES = ttest.c testlib.c
 ttest_CFLAGS = $(AM_CFLAGS) -pthread
 ttest_LDADD = libbacktrace.la
 
+BUILDTESTS += ttest_alloc
+
+ttest_alloc_SOURCES = $(ttest_SOURCES)
+ttest_alloc_CFLAGS = $(ttest_CFLAGS)
+ttest_alloc_LDADD = libbacktrace_alloc.la
+
 endif HAVE_PTHREAD
 
 if HAVE_OBJCOPY_DEBUGLINK
 
-TESTS += dtest
+TESTS += btest_gnudebuglink
 
-dtest: btest_static
-	$(OBJCOPY) --only-keep-debug btest_static btest.debug
-	$(OBJCOPY) --strip-debug --add-gnu-debuglink=btest.debug btest_static dtest
-
-CLEANFILES += dtest btest.debug
+%_gnudebuglink: %
+	$(OBJCOPY) --only-keep-debug $< $@.debug
+	$(OBJCOPY) --strip-debug --add-gnu-debuglink=$@.debug $< $@
 
 endif HAVE_OBJCOPY_DEBUGLINK
 
+%_buildid: %
+	./install-debuginfo-for-buildid.sh \
+	  "$(TEST_BUILD_ID_DIR)" \
+	  $<
+	$(OBJCOPY) --strip-debug $< $@
+
 if HAVE_COMPRESSED_DEBUG
 
 ctestg_SOURCES = btest.c testlib.c
@@ -166,12 +370,49 @@ ctesta_CFLAGS = $(AM_CFLAGS) -g
 ctesta_LDFLAGS = -Wl,--compress-debug-sections=zlib-gabi
 ctesta_LDADD = libbacktrace.la
 
-check_PROGRAMS += ctestg ctesta
+BUILDTESTS += ctestg ctesta
+
+ctestg_alloc_SOURCES = $(ctestg_SOURCES)
+ctestg_alloc_CFLAGS = $(ctestg_CFLAGS)
+ctestg_alloc_LDFLAGS = $(ctestg_LDFLAGS)
+ctestg_alloc_LDADD = libbacktrace_alloc.la
+
+ctesta_alloc_SOURCES = $(ctesta_SOURCES)
+ctesta_alloc_CFLAGS = $(ctesta_CFLAGS)
+ctesta_alloc_LDFLAGS = $(ctesta_LDFLAGS)
+ctesta_alloc_LDADD = libbacktrace_alloc.la
+
+BUILDTESTS += ctestg_alloc ctesta_alloc
+
+endif
+
+if HAVE_DWARF5
+
+dwarf5_SOURCES = btest.c testlib.c
+dwarf5_CFLAGS = $(AM_CFLAGS) -gdwarf-5
+dwarf5_LDADD = libbacktrace.la
+
+BUILDTESTS += dwarf5
+
+dwarf5_alloc_SOURCES = $(dwarf5_SOURCES)
+dwarf5_alloc_CFLAGS = $(dwarf5_CFLAGS)
+dwarf5_alloc_LDADD = libbacktrace_alloc.la
+
+BUILDTESTS += dwarf5_alloc
 
 endif
 
 endif NATIVE
 
+check_PROGRAMS += $(BUILDTESTS)
+
+TESTS += $(BUILDTESTS)
+
+CLEANFILES = $(TESTS) *.debug elf_for_test.c edtest2_build.c gen_edtest2_build
+
+clean-local:
+	-rm -rf usr
+
 # We can't use automake's automatic dependency tracking, because it
 # breaks when using bootstrap-lean.  Automatic dependency tracking
 # with GCC bootstrap will cause some of the objects to depend on
@@ -186,7 +427,7 @@ endif NATIVE
 
 alloc.lo: config.h backtrace.h internal.h
 backtrace.lo: config.h backtrace.h internal.h
-btest.lo:  backtrace.h backtrace-supported.h filenames.h
+btest.lo: filenames.h backtrace.h backtrace-supported.h
 dwarf.lo: config.h filenames.h backtrace.h internal.h
 elf.lo: config.h backtrace.h internal.h
 fileline.lo: config.h backtrace.h internal.h