fileinfo produces output that cannot be decoded with UTF-8

[s3rvac]

When fileinfo is run over the attached 64-bit ELF in the verbose mode, it produces output that cannot be decoded with UTF-8.

Input

$ fileinfo -v FILE > output.txt

where FILE is 1F9AEA9C8C3A952C86E70BB1BB086AD3FA763F6231C5CDCBA887681403030582.

Output

When I try to decode the produced output with UTF-8, the decoding fails as there is an invalid character:

$ python3.6
>>> open('output.txt', 'r', encoding='utf-8').read()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x92 in position 37539: invalid start byte

The invalid character is the last non-whitespace character on the following line (below, it is decoded with CP1250):

16   String table offset of name of needed library (DT_NEEDED)   0x09b0    libm.s’

It's ordinal value is 146 (0x92 hexa).

Expected output

fileinfo produces output that can be decoded with UTF-8. Currently, it is supposed to always produce ASCII output, which is decodable with UTF-8.

Configuration

• Commit: 8c4b23d (current master)
• 64b Arch Linux, GCC 7.2.1, Debug build of RetDec

[s3rvac]

Another file: C6F0EFA92E641EA31C08B1F0AA859B7402876B4FA2E65B61E657927F9DC9B6C7

[mbandzi]

Non-printable chars are now replaced with hexadecimal codes as in other parts of retdec-fileinfo.
Fixed in 5eab1d53d7.