[prev in list] [next in list] [prev in thread] [next in thread] 

List:       gdb-patches
Subject:    [PATCH 0/2] Fix "info frame" in the outermost frame.
From:       palves () redhat ! com (Pedro Alves)
Date:       2013-11-29 20:16:00
Message-ID: 1385756149-534-1-git-send-email-palves () redhat ! com
[Download RAW message or body]

Doing "info frame" in the outermost frame, when that was indicated by
the next frame saying the unwound PC is undefined/not saved, results
in error and incomplete output:

 (gdb) bt
 #0  thread_function0 (arg=0x0) at threads.c:63
 #1  0x00000034cf407d14 in start_thread (arg=0x7ffff7fcb700) at pthread_create.c:309
 #2  0x000000323d4f168d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

 (gdb) frame 2
 #2  0x000000323d4f168d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
 115             call    *%rax

 (gdb) info frame
 Stack level 2, frame at 0x0:
  rip = 0x323d4f168d in clone (../sysdeps/unix/sysv/linux/x86_64/clone.S:115); saved \
rip Register 16 was not saved  (gdb)

This mini-series fixes it.  Afterwards, we get:

 (gdb) info frame
 Stack level 2, frame at 0x0:
  rip = 0x323d4f168d in clone (../sysdeps/unix/sysv/linux/x86_64/clone.S:115); saved \
rip = <not saved>  Outermost frame: outermost
  caller of frame at 0x7ffff7fcafc0
  source language asm.
  Arglist at 0x7ffff7fcafb8, args:
  Locals at 0x7ffff7fcafb8, Previous frame's sp is 0x7ffff7fcafc8
 (gdb)

Pedro Alves (2):
  New OPTIMIZED_OUT_ERROR error code.
  Fix "info frame" in the outermost frame.

 gdb/dwarf2loc.c                                    |   7 +-
 gdb/exceptions.h                                   |   4 +
 gdb/frame.c                                        | 111 +++--
 gdb/frame.h                                        |   8 -
 gdb/spu-tdep.c                                     |   5 +-
 gdb/stack.c                                        |  27 +-
 gdb/testsuite/gdb.dwarf2/dw2-undefined-ret-addr.S  | 508 +++++++++++++++++++++
 gdb/testsuite/gdb.dwarf2/dw2-undefined-ret-addr.c  |  36 ++
 .../gdb.dwarf2/dw2-undefined-ret-addr.exp          |  58 +++
 gdb/valops.c                                       |   3 +-
 gdb/valprint.c                                     |   8 +-
 gdb/valprint.h                                     |   3 +
 12 files changed, 712 insertions(+), 66 deletions(-)
 create mode 100644 gdb/testsuite/gdb.dwarf2/dw2-undefined-ret-addr.S
 create mode 100644 gdb/testsuite/gdb.dwarf2/dw2-undefined-ret-addr.c
 create mode 100644 gdb/testsuite/gdb.dwarf2/dw2-undefined-ret-addr.exp

-- 
1.7.11.7


[prev in list] [next in list] [prev in thread] [next in thread]