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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/29202] New: [gdb/rust] Running selftest rust-lex. Self
 test failed: Converting character sets: Invalid argument.
Date: Tue, 31 May 2022 08:58:53 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29202

            Bug ID: 29202
           Summary: [gdb/rust] Running selftest rust-lex. Self test
                    failed: Converting character sets: Invalid argument.
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: rust
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

Here ( https://builder.sourceware.org/buildbot/#/builders/98/builds/10 ) we
have:
...
Running selftest rust-lex.
Self test failed: Converting character sets: Invalid argument.
...
Ran 147 unit tests, 1 failed
(gdb) PASS: gdb.gdb/unittest.exp: no executable loaded: maintenance selftes=
t,
ran some tests
FAIL: gdb.gdb/unittest.exp: no executable loaded: maintenance selftest, fai=
led
none
...

I managed to reproduce this in a container helpfully set up by Martin Li=C5=
=A1ka.

The root cause turned out to be this call failing:
...
(gdb) fin
Run till exit from #0  0x00007f0c2e11668e in iconv_open () from
/lib64/libc.so.6
iconv_wrapper::iconv_wrapper (from=3D0x11946e0 "ANSI_X3.4-1968", to=3D0x96d=
e99
"UTF-32LE", this=3D<synthetic pointer>) at ../../gdb/charset.c:476
...
because the support for UTF-32LE was not installed.

Adding the package glibc-locale made the test pass.

--=20
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