[Bug tdep/29598] New: dereferenced null pointer in arm-dis.c

["nickkirkby at protonmail dot ch" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=29598

            Bug ID: 29598
           Summary: dereferenced null pointer in arm-dis.c
           Product: gdb
           Version: HEAD
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tdep
          Assignee: unassigned at sourceware dot org
          Reporter: nickkirkby at protonmail dot ch
  Target Milestone: ---

Created attachment 14349
  --> https://sourceware.org/bugzilla/attachment.cgi?id=14349&action=edit
patch

Thread 1 "gdb" received signal SIGSEGV, Segmentation fault.
0x000055555622616a in mapping_symbol_for_insn (During symbol reading:
incomplete CFI data; unspecified registers (e.g., rax) at 0x555556226181
During symbol reading: .debug_rnglists entry has start address of zero [in
module /home/user/repos/gdb-13.0.50.20220920/build/gdb/gdb]
During symbol reading: .debug_line address at offset 0x2511c7 is 0 [in module
/home/user/repos/gdb-13.0.50.20220920/build/gdb/gdb]
During symbol reading: unsupported tag: 'DW_TAG_unspecified_type'
During symbol reading: Member function "~_Sp_counted_base" (offset 0x1ceaf15)
is virtual but the vtable offset is not specified
During symbol reading: No DW_FORM_block* DW_AT_call_value for DW_TAG_call_site
child DIE 0x1d0ff23 [in module
/home/user/repos/gdb-13.0.50.20220920/build/gdb/gdb]
pc=pc@entry=68022, info=info@entry=0x7fffffffd1c8,
map_symbol=map_symbol@entry=0x7fffffffcf28) at ../../opcodes/arm-dis.c:11868
11868         || bfd_asymbol_flavour (*info->symtab) != bfd_target_elf_flavour)


Previously opened incorrectly at:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106996

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