[Bug ld/17110] New: ld crash in _bfd_elf_find_segment_containing_section with -relax

[rmansfield at qnx dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17110

            Bug ID: 17110
           Summary: ld crash in _bfd_elf_find_segment_containing_section
                    with -relax
           Product: binutils
           Version: 2.25 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: rmansfield at qnx dot com
            Target: sh4-unknown-linux-gnu

Created attachment 7678
  --> https://sourceware.org/bugzilla/attachment.cgi?id=7678&action=edit
reduced testcase

Configured with --target=sh4-unknown-linux-gnu

$ ./gas/as-new ~/t.s -o t.o -relax 
$ ./ld/ld-new t.o -relax
./ld/ld-new: warning: cannot find entry symbol _start; defaulting to 00400054
Segmentation fault (core dumped)

(gdb) bt
#0  0x08093aab in _bfd_elf_find_segment_containing_section (abfd=0x8147690, 
    section=0x8148a58) at ../../bfd/elf.c:3649
#1  0x0808728e in sh_elf_osec_to_segment (output_bfd=0x8147690, osec=0x8147750)
    at ../../bfd/elf32-sh.c:3680
#2  0x0808c524 in sh_elf_relocate_section (output_bfd=0x8147690, 
    info=0xffffc4f8, input_bfd=0x8147690, input_section=0x8148a58, 
    contents=0x8159f98 "]", relocs=0x8149e38, local_syms=0x814a980, 
    local_sections=0x815a048) at ../../bfd/elf32-sh.c:3838
#3  0x0808fe83 in sh_elf_get_relocated_section_contents (output_bfd=0x8147690, 
    link_info=0xffffc4f8, link_order=0xffffc5a8, data=0x8159f98 "]", 
    relocatable=0, symbols=0x8149eac) at ../../bfd/elf32-sh.c:5592
#4  0x08085da9 in bfd_simple_get_relocated_section_contents (abfd=0x8147690, 
    sec=0x8148a58, outbuf=0x8159f98 "]", symbol_table=0x8149eac)
    at ../../bfd/simple.c:270
#5  0x08081c57 in read_section (abfd=0x8147690, 
    sec=0x8119638 <dwarf_debug_sections+24>, syms=0x8149eac, offset=0, 
    section_buffer=0x814a1d8, section_size=0xffffc668)
    at ../../bfd/dwarf2.c:526
#6  0x08084936 in _bfd_dwarf2_slurp_debug_info (abfd=0x8147690, 
    debug_bfd=0x8147690, debug_sections=0x8119620 <dwarf_debug_sections>, 
    symbols=0x8149eac, pinfo=0x8147990, do_place=1) at ../../bfd/dwarf2.c:3549
#7  0x08084ccc in find_line (abfd=0x8147690, 
    debug_sections=0x8119620 <dwarf_debug_sections>, section=0x8148788, 
    offset=8, symbol=0x0, symbols=0x8149eac, filename_ptr=0xffffc888, 
    functionname_ptr=0xffffc884, linenumber_ptr=0xffffc880, 
    discriminator_ptr=0x0, addr_size=0, pinfo=0x8147990)
    at ../../bfd/dwarf2.c:3641
#8  0x08096259 in _bfd_elf_find_nearest_line_discriminator (abfd=0x8147690, 
    section=0x8148788, symbols=0x8149eac, offset=8, filename_ptr=0xffffc888, 
    functionname_ptr=0xffffc884, line_ptr=0xffffc880, discriminator_ptr=0x0)
    at ../../bfd/elf.c:7692
#9  0x08096373 in _bfd_elf_find_nearest_line (abfd=0x8147690, 
    section=0x8148788, symbols=0x8149eac, offset=8, filename_ptr=0xffffc888, 
    functionname_ptr=0xffffc884, line_ptr=0xffffc880) at ../../bfd/elf.c:7661
#10 0x08062cc8 in vfinfo (fp=0xf7f8f960 <_IO_2_1_stderr_>, 
    fmt=0x80ec964 ": undefined reference to `%T'\n", arg=<optimized out>, 
    is_warning=1) at ../../ld/ldmisc.c:312
#11 0x08063579 in einfo (fmt=0x80ec960 "%X%C: undefined reference to `%T'\n")
    at ../../ld/ldmisc.c:464
#12 0x0805d714 in undefined_symbol (info=0x8130d40 <link_info>, 
    name=0x8149c3a "trap", abfd=0x8147690, section=0x8148788, address=8, 
    error=1) at ../../ld/ldmain.c:1325
#13 0x0808c75a in sh_elf_relocate_section (output_bfd=0x813f100, 
    info=0x8130d40 <link_info>, input_bfd=0x8147690, input_section=0x8148788, 
    contents=0x814a8b8 "\"OCe", relocs=0x8149c4c, local_syms=0x814a980, 
    local_sections=0x8154fd8) at ../../bfd/elf32-sh.c:4123
#14 0x080af0cd in elf_link_input_bfd (flinfo=0xffffcd40, input_bfd=0x8147690)
    at ../../bfd/elflink.c:9759
#15 0x080b0a16 in bfd_elf_final_link (abfd=0x813f100, 
    info=0x8130d40 <link_info>) at ../../bfd/elflink.c:10948
#16 0x0805f2c4 in ldwrite () at ../../ld/ldwrite.c:580

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