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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/27893] New: [fission] segfault in
 dw2_expand_symtabs_matching_one
Date: Thu, 20 May 2021 19:57:31 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27893

            Bug ID: 27893
           Summary: [fission] segfault in dw2_expand_symtabs_matching_one
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: symtab
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

When running test-case gdb.base/jit-elf-so.exp with target board fission, I=
 run
into:
...
(gdb) PASS: gdb.base/jit-elf-so.exp: one_jit_test-1: continue to breakpoint:
break here after-dlopen
break
/home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.base/jit-elf-main.c:76=
^M
ERROR: GDB process no longer exists
GDB process exited with wait status 8504 exp9 0 0 CHILDKILLED SIGABRT SIGAB=
RT
UNRESOLVED: gdb.base/jit-elf-so.exp: one_jit_test-1: setting breakpoint at
/home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.base/jit-elf-main.c:76
(eof)
...


In more detail:
...
$ gdb --args gdb -q -batch -x ./outputs/gdb.base/jit-elf-so/gdb.in.1=20
  ...
Thread 1 "gdb" received signal SIGSEGV, Segmentation fault.
0x000000000066f46c in dw2_expand_symtabs_matching_one(dwarf2_per_cu_data *,
dwarf2_per_objfile *, gdb::function_view<bool(char const*, bool)>,
gdb::function_view<bool(compunit_symtab*)>)
    (per_cu=3D0x29b67a0, per_objfile=3D0x2442110, file_matcher=3D...,
expansion_notify=3D...)
    at /home/vries/gdb_versions/devel/src/gdb/dwarf2/read.c:4119
4119      if (file_matcher =3D=3D NULL || per_cu->v.quick->mark)
(gdb)=20
...

--=20
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