[Bug corefiles/11523] New: gdb failed to read 32bit AVX coredump by gcore

["hjl dot tools at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

On Linux/AVX, I got

[hjl@gnu-18 xml]$ ./gdb 32 
GNU gdb (GDB) 7.1.50.20100419-cvs
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /export/home/hjl/bugs/gdb/xml/32...done.
Setting up the environment for debugging gdb.
Function "internal_error" not defined.
Make breakpoint pending on future shared library load? (y or [n]) [answered N;
input not from terminal]
Function "info_command" not defined.
Make breakpoint pending on future shared library load? (y or [n]) [answered N;
input not from terminal]
.gdbinit:8: Error in sourced command file:
Argument required (one or more breakpoint numbers).
(gdb) b main
Breakpoint 1 at 0x80483e4: file x.c, line 12.
(gdb) r
Starting program: /export/home/hjl/bugs/gdb/xml/32 

Breakpoint 1, main () at x.c:12
12	  double y = foo (1.1);
(gdb) p $ymm0
$1 = {v8_float = {0, 0, 0, 0, 0, 0, 0, 0}, v4_double = {0, 0, 0, 0}, 
  v32_int8 = {0 <repeats 32 times>}, v16_int16 = {0 <repeats 16 times>}, 
  v8_int32 = {0, 0, 0, 0, 0, 0, 0, 0}, v4_int64 = {0, 0, 0, 0}, v2_int128 = {
    0x00000000000000000000000000000000, 0x00000000000000000000000000000000}}
(gdb) gcore
Saved corefile core.4776
(gdb) c
Continuing.
1.100000

Program exited normally.
(gdb) q
[hjl@gnu-18 xml]$ ./gdb 32 core.4776
GNU gdb (GDB) 7.1.50.20100419-cvs
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /export/home/hjl/bugs/gdb/xml/32...done.
[New Thread 4776]

warning: Can't read pathname for load map: Input/output error.
Reading symbols from /lib/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/ld-linux.so.2
Core was generated by `/export/home/hjl/bugs/gdb/xml/32'.
Program terminated with signal 5, Trace/breakpoint trap.
#0  0xa76d32e0 in ?? ()
Setting up the environment for debugging gdb.
Function "internal_error" not defined.
Make breakpoint pending on future shared library load? (y or [n]) [answered N;
input not from terminal]
Function "info_command" not defined.
Make breakpoint pending on future shared library load? (y or [n]) [answered N;
input not from terminal]
.gdbinit:8: Error in sourced command file:
Argument required (one or more breakpoint numbers).
(gdb) p $ymm0
$1 = void
(gdb) p $xmm0
$2 = {v4_float = {0, 0, 0, 0}, v2_double = {0, 0}, v16_int8 = {
    0 <repeats 16 times>}, v8_int16 = {0, 0, 0, 0, 0, 0, 0, 0}, v4_int32 = {0, 
    0, 0, 0}, v2_int64 = {0, 0}, uint128 = 0}
(gdb)

-- 
           Summary: gdb failed to read 32bit AVX coredump by gcore
           Product: gdb
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: corefiles
        AssignedTo: unassigned at sourceware dot org
        ReportedBy: hjl dot tools at gmail dot com
                CC: gdb-prs at sourceware dot org


http://sourceware.org/bugzilla/show_bug.cgi?id=11523

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