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<head>
<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ld.lld crashes while linking baremetal RISC-V binary"
href="https://bugs.llvm.org/show_bug.cgi?id=42038">42038</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>ld.lld crashes while linking baremetal RISC-V binary
</td>
</tr>
<tr>
<th>Product</th>
<td>lld
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>ELF
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>aykevanlaethem@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, peter.smith@linaro.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=22024" name="attach_22024" title="The 3 files to reproduce">attachment 22024</a> <a href="attachment.cgi?id=22024&action=edit" title="The 3 files to reproduce">[details]</a></span>
The 3 files to reproduce
ld.lld crashes while trying to link some RISC-V firmware.
The full backtrace is here:
<a href="https://gist.github.com/aykevl/b4220bcd8637106f2a53146b6557bfbd">https://gist.github.com/aykevl/b4220bcd8637106f2a53146b6557bfbd</a> (with LLVM
compiled using RelWithDebInfo)
Here is the part that looks the most interesting to me:
#4 0x0000000000bfe2b5 getRISCVPCRelHi20(lld::elf::Symbol const*, unsigned
long)::$_1::operator()(lld::elf::Relocation const&, lld::elf::Relocation
const&) const
/home/ayke/src/github.com/tinygo-org/tinygo/llvm/tools/lld/ELF/InputSection.cpp:572:37
#5 0x0000000000bfe2b5 bool
__gnu_cxx::__ops::_Iter_comp_val<getRISCVPCRelHi20(lld::elf::Symbol const*,
unsigned
long)::$_1>::operator()<__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > >,
lld::elf::Relocation const>(__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > >,
lld::elf::Relocation const&)
/usr/bin/../lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/bits/predefined_ops.h:147:0
#6 0x0000000000bfe2b5
std::pair<__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > >,
__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > > >
std::__equal_range<__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > >,
lld::elf::Relocation,
__gnu_cxx::__ops::_Iter_comp_val<getRISCVPCRelHi20(lld::elf::Symbol const*,
unsigned long)::$_1>,
__gnu_cxx::__ops::_Val_comp_iter<getRISCVPCRelHi20(lld::elf::Symbol const*,
unsigned long)::$_1> >(__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > >,
__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > >,
lld::elf::Relocation const&,
__gnu_cxx::__ops::_Iter_comp_val<getRISCVPCRelHi20(lld::elf::Symbol const*,
unsigned long)::$_1>,
__gnu_cxx::__ops::_Val_comp_iter<getRISCVPCRelHi20(lld::elf::Symbol const*,
unsigned long)::$_1>)
/usr/bin/../lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/bits/stl_algo.h:2135:0
#7 0x0000000000bfe2b5
std::pair<__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > >,
__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > > >
std::equal_range<__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > >,
lld::elf::Relocation, getRISCVPCRelHi20(lld::elf::Symbol const*, unsigned
long)::$_1>(__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > >,
__gnu_cxx::__normal_iterator<lld::elf::Relocation*,
std::vector<lld::elf::Relocation, std::allocator<lld::elf::Relocation> > >,
lld::elf::Relocation const&, getRISCVPCRelHi20(lld::elf::Symbol const*,
unsigned long)::$_1)
/usr/bin/../lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/bits/stl_algo.h:2225:0
#8 0x0000000000bfe2b5 getRISCVPCRelHi20(lld::elf::Symbol const*, unsigned
long)
/home/ayke/src/github.com/tinygo-org/tinygo/llvm/tools/lld/ELF/InputSection.cpp:570:0
#9 0x0000000000bfe2b5 getRelocTargetVA(lld::elf::InputFile const*, unsigned
int, long, unsigned long, lld::elf::Symbol const&, lld::elf::RelExpr)
/home/ayke/src/github.com/tinygo-org/tinygo/llvm/tools/lld/ELF/InputSection.cpp:691:0
#10 0x0000000000bfd848 lld::elf::InputSectionBase::relocateAlloc(unsigned
char*, unsigned char*)
/home/ayke/src/github.com/tinygo-org/tinygo/llvm/tools/lld/ELF/InputSection.cpp:888:9
#11 0x0000000000c2f2bf void
lld::elf::OutputSection::writeTo<llvm::object::ELFType<(llvm::support::endianness)1,
false> >(unsigned char*)::'lambda'(unsigned long)::operator()(unsigned long)
const
/home/ayke/src/github.com/tinygo-org/tinygo/llvm/tools/lld/ELF/OutputSections.cpp:243:9
LLVM (including Clang and LLD) was compiled with the following configuration:
cmake -G Ninja ../llvm "-DLLVM_TARGETS_TO_BUILD=X86;ARM;AArch64;WebAssembly"
"-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=AVR;RISCV"
-DCMAKE_BUILD_TYPE=RelWithDebInfo -DLLVM_ENABLE_ASSERTIONS=OFF
-DLIBCLANG_BUILD_STATIC=ON -DLLVM_ENABLE_TERMINFO=OFF -DLLVM_ENABLE_ZLIB=OFF
I have attached the files I tried to link, so it should be possible to
reproduce.</pre>
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