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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Regression(r309526): DWARF info may be corrupt; offsets in a range list entry are in different sections"
href="https://bugs.llvm.org/show_bug.cgi?id=34007">34007</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Regression(r309526): DWARF info may be corrupt; offsets in a range list entry are in different sections
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>DebugInfo
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>nicolasweber@gmx.de
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=18880" name="attach_18880" title="test.ii">attachment 18880</a> <a href="attachment.cgi?id=18880&action=edit" title="test.ii">[details]</a></span>
test.ii
test.ii is cxa_default_handlers.cpp from libc++abi after preprocessing.
Compile like so:
../../llvm-build-nolibcxx/bin/clang++ -fno-strict-aliasing
--param=ssp-buffer-size=4 -fstack-protector -funwind-tables -fPIC -pipe
-Bthird_party/binutils/Linux_x64/Release/bin -pthread -fcolor-diagnostics -m32
-msse2 -mfpmath=sse -mmmx -momit-leaf-frame-pointer -mstack-alignment=16
-mstackrealign -O0 -fno-omit-frame-pointer -gdwarf-3 -g2 -ggnu-pubnames
-gsplit-dwarf -fvisibility=hidden -fPIC -fstrict-aliasing -std=gnu++14
-fvisibility-inlines-hidden -frtti -x c++ -c test.ii -o test.o
Then link like so:
../../llvm-build-nolibcxx/bin/clang++ -shared -Wl,--fatal-warnings -fPIC
-Wl,-z,noexecstack -Wl,-z,now -Wl,-z,relro -Wl,-z,defs -Wl,--no-as-needed
-lpthread -Wl,--as-needed -fuse-ld=gold
-Bthird_party/binutils/Linux_x64/Release/bin -nodefaultlibs -m32
-Wl,--gdb-index --sysroot=build/linux/debian_jessie_i386-sysroot test.o
third_party/binutils/Linux_x64/Release/bin/ld.gold: warning: test.o: DWARF info
may be corrupt; offsets in a range list entry are in different sections
buildtools/third_party/libc++abi/trunk/src/cxa_default_handlers.cpp:29: error:
undefined reference to '__cxa_get_globals_fast'
buildtools/third_party/libc++abi/trunk/src/cxa_default_handlers.cpp:53: error:
undefined reference to '__cxa_demangle'
buildtools/third_party/libc++abi/trunk/src/cxa_default_handlers.cpp:0: error:
undefined reference to 'typeinfo for std::exception'
buildtools/third_party/libc++abi/trunk/src/cxa_default_handlers.cpp:63: error:
undefined reference to 'abort_message'
buildtools/third_party/libc++abi/trunk/src/cxa_default_handlers.cpp:68: error:
undefined reference to 'abort_message'
buildtools/third_party/libc++abi/trunk/src/cxa_default_handlers.cpp:73: error:
undefined reference to 'abort_message'
buildtools/third_party/libc++abi/trunk/src/cxa_default_handlers.cpp:77: error:
undefined reference to 'abort_message'
buildtools/third_party/libc++abi/trunk/src/cxa_default_handlers.cpp:84: error:
undefined reference to 'std::terminate()'
clang-4.0: error: linker command failed with exit code 1 (use -v to see
invocation)
The undefined references are fine (an artifact of reducing this to one file),
but the "DWARF info may be corrupt" is not good.
Download
<a href="http://commondatastorage.googleapis.com/chrome-linux-sysroot/toolchain/6f7741c4222de05cd5f2fbb9f02d34f76e5a3134/debian_jessie_i386_sysroot.tar.xz">http://commondatastorage.googleapis.com/chrome-linux-sysroot/toolchain/6f7741c4222de05cd5f2fbb9f02d34f76e5a3134/debian_jessie_i386_sysroot.tar.xz</a>
and extract it to build/linux/debian_jessie_i386-sysroot to get that sysroot
and
<a href="http://commondatastorage.googleapis.com/chromium-binutils/0cb5726d9701f8be6a81b199899de1de552922f2">http://commondatastorage.googleapis.com/chromium-binutils/0cb5726d9701f8be6a81b199899de1de552922f2</a>
and put it at third_party/binutils/Linux_x64/Release/bin to get that gold (it's
I think a prebuilt of the latest stable gold, maybe with some cherry-picked
patches).</pre>
</div>
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