[Bug testsuite/33970] [gdb/testsuite] UnicodeDecodeError for dwarf-to-dwarf-assembler.py gdb.rust/unicode/unicode

https://sourceware.org/bugzilla/show_bug.cgi?id=33970

--- Comment #1 from Sourceware Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom de Vries <[email protected]>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=31431841c09357f6f598549d69d9e98b89dde08e

commit 31431841c09357f6f598549d69d9e98b89dde08e
Author: Tom de Vries <[email protected]>
Date:   Wed Jun 10 11:11:53 2026 +0200

    [gdb/contrib] Fix UnicodeDecodeError in dwarf-to-dwarf-assembler.py

    When running dwarf-to-dwarf-assembler.py on
outputs/gdb.rust/unicode/unicode,
    I run into a UnicodeDecodeError for (using readelf -w):
    ...
     <4><9cf>: Abbrev Number: 10 (DW_TAG_variable)
        <9d3>   DW_AT_name        : (indirect string, offset: 0xab4): ð¯
    ...
    or more explicit using llvm-dwarfdump -v:
    ...
    0x000009cf:         DW_TAG_variable [10]   (0x000009c2)
                          DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000ab4] \
                                                      = "\360\235\225\257")
    ...

    Fix this by using UTF-8 instead of ascii decoding, which gets us instead:
    ...
      DW_AT_name ð¯ DW_FORM_strp
    ...

    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=33970

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