[llvm-bugs] [Bug 33029] New: Crash with -emit-relocs and linker scripts

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33029

            Bug ID: 33029
           Summary: Crash with -emit-relocs and linker scripts
           Product: lld
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: ELF
          Assignee: unassignedbugs at nondot.org
          Reporter: rafael.espindola at gmail.com
                CC: llvm-bugs at lists.llvm.org

Given an empty assembly file for armv7a-none-linux-gnueabi and the linker
script

SECTIONS                                                                       
                                                                               
                    {                                                          
                                                                               
                                          .rel.dyn : {    }                    
                                                                               
                                                              .zed     : {
PROVIDE_HIDDEN (foobar = .);  }                                                
                                                                               
     }

the command "ld.lld a1.o   -emit-relocs -T l.script" crashes and the backtrace
is

#0  0x000000000060be1c in
lld::elf::OutputSection::finalize<llvm::object::ELFType<(llvm::support::endianness)1,
false> > (this=0x6050218)
    at /home/espindola/llvm/llvm/tools/lld/ELF/OutputSections.cpp:132
#1  0x00000000006e6753 in (anonymous
namespace)::Writer<llvm::object::ELFType<(llvm::support::endianness)1, false>
>::finalizeSections (this=0x7fffffffd260)
    at /home/espindola/llvm/llvm/tools/lld/ELF/Writer.cpp:1251
#2  0x00000000006e3022 in (anonymous
namespace)::Writer<llvm::object::ELFType<(llvm::support::endianness)1, false>
>::run (this=0x7fffffffd260)
    at /home/espindola/llvm/llvm/tools/lld/ELF/Writer.cpp:243
#3  0x00000000007043e2 in
lld::elf::writeResult<llvm::object::ELFType<(llvm::support::endianness)1,
false> > () at /home/espindola/llvm/llvm/tools/lld/ELF/Writer.cpp:133
#4  0x000000000056006f in
lld::elf::LinkerDriver::link<llvm::object::ELFType<(llvm::support::endianness)1,
false> > (this=0x60283a0, Args=...)
    at /home/espindola/llvm/llvm/tools/lld/ELF/Driver.cpp:1014
#5  0x0000000000555f73 in lld::elf::LinkerDriver::main (this=0x60283a0,
ArgsArr=..., CanExitEarly=true) at
/home/espindola/llvm/llvm/tools/lld/ELF/Driver.cpp:388
#6  0x0000000000552d64 in lld::elf::link (Args=..., CanExitEarly=true,
Error=...) at /home/espindola/llvm/llvm/tools/lld/ELF/Driver.cpp:85
#7  0x00000000004126cf in main (Argc=8, Argv=0x7fffffffdff8) at
/home/espindola/llvm/llvm/tools/lld/tools/lld/lld.cpp:104

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