import dwarves-1.15-5.el8
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commit
315ef39829
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.dwarves.metadata
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.dwarves.metadata
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90995f46f9fcec884748a1deeb2283a4ae202594 SOURCES/dwarves-1.15.tar.xz
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1
.gitignore
vendored
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SOURCES/dwarves-1.15.tar.xz
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From b1412a88bb616f449401be285d43b028962992b9 Mon Sep 17 00:00:00 2001
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From: Arnaldo Carvalho de Melo <acme@redhat.com>
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Date: Mon, 1 Jul 2019 11:37:40 -0300
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Subject: [PATCH 1/1] fprintf: Fixup handling classes with no members
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Will Cohen reported this NULL pointer dereference while processing some
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object linking with cuda:
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#0 0x00007ffff7f91453 in __class__fprintf (class=0x522560, cu=0x40ff80, conf=0x7fffffffa930, fp=0x7ffff7ece780 <_IO_2_1_stdout_>)
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at /home/acme/git/pahole/dwarves_fprintf.c:1624
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#1 0x00007ffff7f92195 in tag__fprintf (tag=0x522560, cu=0x40ff80, conf=0x7fffffffa930, fp=0x7ffff7ece780 <_IO_2_1_stdout_>)
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at /home/acme/git/pahole/dwarves_fprintf.c:1835
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#2 0x00007ffff7f90b57 in __class__fprintf (class=0x5224c0, cu=0x40ff80, conf=0x7fffffffaaa0, fp=0x7ffff7ece780 <_IO_2_1_stdout_>)
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at /home/acme/git/pahole/dwarves_fprintf.c:1406
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#3 0x00007ffff7f92195 in tag__fprintf (tag=0x5224c0, cu=0x40ff80, conf=0x40a200 <conf>, fp=0x7ffff7ece780 <_IO_2_1_stdout_>)
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at /home/acme/git/pahole/dwarves_fprintf.c:1835
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#4 0x0000000000402d03 in class_formatter (class=0x5224c0, cu=0x40ff80, id=1257) at /home/acme/git/pahole/pahole.c:224
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#5 0x0000000000403074 in print_classes (cu=0x40ff80) at /home/acme/git/pahole/pahole.c:319
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#6 0x0000000000404bb2 in pahole_stealer (cu=0x40ff80, conf_load=0x40a240 <conf_load>) at /home/acme/git/pahole/pahole.c:1174
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#7 0x00007ffff7f9ff73 in finalize_cu (cus=0x40b2b0, cu=0x40ff80, dcu=0x7fffffffacf0, conf=0x40a240 <conf_load>)
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at /home/acme/git/pahole/dwarf_loader.c:2227
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#8 0x00007ffff7f9ffac in finalize_cu_immediately (cus=0x40b2b0, cu=0x40ff80, dcu=0x7fffffffacf0, conf=0x40a240 <conf_load>)
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at /home/acme/git/pahole/dwarf_loader.c:2236
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#9 0x00007ffff7fa064c in cus__load_module (cus=0x40b2b0, conf=0x40a240 <conf_load>, mod=0x40d760, dw=0x40e980, elf=0x40b360,
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filename=0x7fffffffd5e3 "examples/wcohen/02_Exercise.cuda") at /home/acme/git/pahole/dwarf_loader.c:2389
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#10 0x00007ffff7fa0760 in cus__process_dwflmod (dwflmod=0x40d760, userdata=0x40d770, name=0x40d910 "examples/wcohen/02_Exercise.cuda",
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base=4194304, arg=0x7fffffffcf10) at /home/acme/git/pahole/dwarf_loader.c:2434
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#11 0x00007ffff7f32be1 in dwfl_getmodules () from /lib64/libdw.so.1
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#12 0x00007ffff7fa0820 in cus__process_file (cus=0x40b2b0, conf=0x40a240 <conf_load>, fd=3,
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filename=0x7fffffffd5e3 "examples/wcohen/02_Exercise.cuda") at /home/acme/git/pahole/dwarf_loader.c:2487
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#13 0x00007ffff7fa089c in dwarf__load_file (cus=0x40b2b0, conf=0x40a240 <conf_load>, filename=0x7fffffffd5e3 "examples/wcohen/02_Exercise.cuda")
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at /home/acme/git/pahole/dwarf_loader.c:2504
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#14 0x00007ffff7f8b0dd in cus__load_file (cus=0x40b2b0, conf=0x40a240 <conf_load>, filename=0x7fffffffd5e3 "examples/wcohen/02_Exercise.cuda")
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at /home/acme/git/pahole/dwarves.c:1745
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#15 0x00007ffff7f8bc2a in cus__load_files (cus=0x40b2b0, conf=0x40a240 <conf_load>, filenames=0x7fffffffd150)
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at /home/acme/git/pahole/dwarves.c:2109
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#16 0x0000000000404ff0 in main (argc=2, argv=0x7fffffffd148) at /home/acme/git/pahole/pahole.c:1294
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(gdb)
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(gdb) p class__name(class, cu)
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$6 = 0x5cbb85 "__nv_hdl_helper_trait<__nv_dl_tag<int (*)(int, char**), main, 1u>, void (main(int, char**)::__lambda0::*)(int, double&)const>"
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(gdb) p class->type.nr_members
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$7 = 0
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(gdb) p last
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$8 = (struct class_member *) 0x0
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(gdb)
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So, before checking for bitfield details, first check if there were
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members.
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Now, if we show all structs/classes in that object file and look for the
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above data structure, we find it inside another:
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$ pahole examples/wcohen/02_Exercise.cuda
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<SNIP>
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struct __nv_hdl_helper_trait_outer<false, false, int, Kokkos::View<double**>, Kokkos::View<double*>, Kokkos::View<double*> > {
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struct __nv_hdl_helper_trait<__nv_dl_tag<int (*)(int, char**), main, 1u>, void (main(int, char**)::__lambda0::*)(int, double&)const> {
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class __nv_hdl_wrapper_t<false, false, __nv_dl_tag<int (*)(int, char**), main, 1u>, void(int, double&), int, Kokkos::View<doubl get<main(int, char**)::__lambda0>(class __lambda0, int, class View<double**>, class View<double*>, class View<double*>);
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/* size: 1, cachelines: 0, members: 0 */
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/* padding: 1 */
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/* last cacheline: 1 bytes */
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};
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/* size: 1, cachelines: 0, members: 0 */
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/* padding: 1 */
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/* last cacheline: 1 bytes */
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};
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<SNIP>
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$
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Reported-by: William Cohen <wcohen@redhat.com>
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Fixes: 13e5b9fc00ee ("fprintf: Add unnamed bitfield padding at the end to rebuild original type")
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Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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---
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dwarves_fprintf.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/dwarves_fprintf.c b/dwarves_fprintf.c
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index 8ad1ced7840c..706f1b5033f5 100644
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--- a/dwarves_fprintf.c
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+++ b/dwarves_fprintf.c
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@@ -1620,7 +1620,7 @@ static size_t __class__fprintf(struct class *class, const struct cu *cu,
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* to avoid adding the forced bitfield paddings and have btfdiff happy.
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*/
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if (class->padding != 0 && type->alignment == 0 && cconf.has_alignment_info &&
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- !cconf.suppress_force_paddings) {
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+ !cconf.suppress_force_paddings && last != NULL) {
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tag_pos = cu__type(cu, last->tag.type);
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size = tag__size(tag_pos, cu);
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--
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2.20.1
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130
SPECS/dwarves.spec
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130
SPECS/dwarves.spec
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%define libname libdwarves
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%define libver 1
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Name: dwarves
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Version: 1.15
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Release: 5%{?dist}
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License: GPLv2
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Summary: Debugging Information Manipulation Tools (pahole & friends)
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URL: http://acmel.wordpress.com
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Source: http://fedorapeople.org/~acme/dwarves/%{name}-%{version}.tar.xz
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Patch: 0001-fprintf-Fixup-handling-classes-with-no-members.patch
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Requires: %{libname}%{libver} = %{version}-%{release}
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BuildRequires: gcc
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BuildRequires: cmake
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BuildRequires: zlib-devel
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BuildRequires: elfutils-devel >= 0.130
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%description
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dwarves is a set of tools that use the debugging information inserted in
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ELF binaries by compilers such as GCC, used by well known debuggers such as
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GDB, and more recent ones such as systemtap.
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Utilities in the dwarves suite include pahole, that can be used to find
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alignment holes in structs and classes in languages such as C, C++, but not
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limited to these.
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It also extracts other information such as CPU cacheline alignment, helping
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pack those structures to achieve more cache hits.
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These tools can also be used to encode and read the BTF type information format
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used with the Linux kernel bpf syscall, using 'pahole -J' and 'pahole -F btf'.
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A diff like tool, codiff can be used to compare the effects changes in source
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code generate on the resulting binaries.
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Another tool is pfunct, that can be used to find all sorts of information about
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functions, inlines, decisions made by the compiler about inlining, etc.
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%package -n %{libname}%{libver}
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Summary: Debugging information processing library
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%description -n %{libname}%{libver}
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Debugging information processing library.
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%package -n %{libname}%{libver}-devel
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Summary: Debugging information library development files
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Requires: %{libname}%{libver} = %{version}-%{release}
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%description -n %{libname}%{libver}-devel
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Debugging information processing library development files.
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%prep
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%setup -q -c -n %{name}-%{version}
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%patch -p1
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%build
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%cmake .
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make VERBOSE=1 %{?_smp_mflags}
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%install
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rm -Rf %{buildroot}
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make install DESTDIR=%{buildroot}
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%ldconfig_scriptlets -n %{libname}%{libver}
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%files
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%doc README.ctracer
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%doc README.btf
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%doc NEWS
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%{_bindir}/btfdiff
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%{_bindir}/codiff
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%{_bindir}/ctracer
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%{_bindir}/dtagnames
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%{_bindir}/fullcircle
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%{_bindir}/pahole
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%{_bindir}/pdwtags
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%{_bindir}/pfunct
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%{_bindir}/pglobal
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%{_bindir}/prefcnt
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%{_bindir}/scncopy
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%{_bindir}/syscse
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%{_bindir}/ostra-cg
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%dir %{_datadir}/dwarves/
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%dir %{_datadir}/dwarves/runtime/
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%dir %{_datadir}/dwarves/runtime/python/
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%defattr(0644,root,root,0755)
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%{_mandir}/man1/pahole.1*
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%{_datadir}/dwarves/runtime/Makefile
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%{_datadir}/dwarves/runtime/linux.blacklist.cu
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%{_datadir}/dwarves/runtime/ctracer_relay.c
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%{_datadir}/dwarves/runtime/ctracer_relay.h
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%attr(0755,root,root) %{_datadir}/dwarves/runtime/python/ostra.py*
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%files -n %{libname}%{libver}
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%{_libdir}/%{libname}.so.*
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%{_libdir}/%{libname}_emit.so.*
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%{_libdir}/%{libname}_reorganize.so.*
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%files -n %{libname}%{libver}-devel
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%doc MANIFEST README
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%{_includedir}/dwarves/btf_encoder.h
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%{_includedir}/dwarves/config.h
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%{_includedir}/dwarves/ctf_encoder.h
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%{_includedir}/dwarves/ctf.h
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%{_includedir}/dwarves/dutil.h
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%{_includedir}/dwarves/dwarves.h
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%{_includedir}/dwarves/dwarves_emit.h
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%{_includedir}/dwarves/dwarves_reorganize.h
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%{_includedir}/dwarves/elfcreator.h
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%{_includedir}/dwarves/elf_symtab.h
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%{_includedir}/dwarves/gobuffer.h
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%{_includedir}/dwarves/hash.h
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%{_includedir}/dwarves/libbtf.h
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%{_includedir}/dwarves/libctf.h
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%{_includedir}/dwarves/list.h
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%{_includedir}/dwarves/rbtree.h
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%{_includedir}/dwarves/strings.h
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%{_libdir}/%{libname}.so
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%{_libdir}/%{libname}_emit.so
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%{_libdir}/%{libname}_reorganize.so
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%changelog
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* Wed Nov 06 2019 Jiri Olsa <jolsa@redhat.com> - 1.15-5
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- Add libdwarves version dependency to dwarves package
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* Mon Nov 04 2019 Jiri Olsa <jolsa@redhat.com> - 1.15-4
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- CI rebuild
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* Wed Sep 25 2019 Jiri Olsa <jolsa@redhat.com> - 1.15-1
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- Initial build
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