[Bug symtab/27333] [dwarf-5] abort on unhandled DW_TAG_type_unit in process_psymtab_comp_unit

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27333

--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-10-branch branch has been updated by Joel Brobecker
<brobecke@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=df3ec334b8ccec482dac01fe2ff12030701da5ee

commit df3ec334b8ccec482dac01fe2ff12030701da5ee
Author: Tom de Vries <tdevries@suse.de>
Date:   Fri Feb 5 17:47:07 2021 +0100

    [gdb/symtab] Handle DW_TAG_type_unit in process_psymtab_comp_unit

    When running test-case gdb.cp/cpexprs-debug-types.exp with target board
    unix/gdb:debug_flags=-gdwarf-5, I run into:
    ...
    (gdb) file cpexprs-debug-types^M
    Reading symbols from cpexprs-debug-types...^M
    ERROR: Couldn't load cpexprs-debug-types into GDB (eof).
    ERROR: Couldn't send delete breakpoints to GDB.
    ERROR: GDB process no longer exists
    GDB process exited with wait status 23054 exp9 0 0 CHILDKILLED SIGABRT
SIGABRT
    ...

    We're running into this abort in process_psymtab_comp_unit:
    ...
      switch (reader.comp_unit_die->tag)
        {
        case DW_TAG_compile_unit:
          this_cu->unit_type = DW_UT_compile;
          break;
        case DW_TAG_partial_unit:
          this_cu->unit_type = DW_UT_partial;
          break;
        default:
          abort ();
        }
    ...
    because reader.comp_unit_die->tag == DW_TAG_type_unit.

    Fix this by adding a DW_TAG_type_unit case.

    Tested on x86_64-linux.

    gdb/ChangeLog:

    2021-02-05  Tom de Vries  <tdevries@suse.de>

            PR symtab/27333
            * dwarf2/read.c (process_psymtab_comp_unit): Handle
DW_TAG_type_unit.

    (cherry picked from commit e77b0004dd114d6ddf3bb92b521b2854341f3f85)

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