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bug#9684: Emacs 23.3 and 24.0.90 don't build on IRIX 6.5


From: Rainer Orth
Subject: bug#9684: Emacs 23.3 and 24.0.90 don't build on IRIX 6.5
Date: Fri, 07 Oct 2011 17:57:33 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (usg-unix-v)

Eli Zaretskii <address@hidden> writes:

> Please show what these commands produce:
>
>  (gdb) frame 3
>  (gdb) pp fun
>  (gdb) frame 1
>  (gdb) pp args[0]
>  (gdb) pp args[1]

Unfortunately, they don't really work:

Breakpoint 3, xsignal1 (error_symbol=274352730, arg=274355066) at 
/vol/src/gnu/emacs/emacs-24.0.90/src/eval.c:1773
(gdb) frame 3
#3  0x1029963c in funcall_lambda (fun=272695997, nargs=0, 
arg_vector=0x7ffb7d14) at /vol/src/gnu/emacs/emacs-24.0.90/src/eval.c:3139
(gdb) pp fun
Address of symbol "print_output_debug_flag" is unknown.
(gdb) frame 1
#1  0x10298f1c in Ffuncall (nargs=2, args=0x7ffb7a10) at 
/vol/src/gnu/emacs/emacs-24.0.90/src/eval.c:3029
(gdb) pp args[0]
Address of symbol "print_output_debug_flag" is unknown.
(gdb)pp args[1] 
Address of symbol "print_output_debug_flag" is unknown.

This is really strange, though:

address@hidden 221 > nm print.o|grep print_output_debug_flag
[44]    |         0|       4|OBJT |GLOB |DEFAULT  |3      
|print_output_debug_flag
address@hidden 222 > nm emacs|grep print_output_debug_flag
[2868]  | 273886352|       4|OBJT |GLOB |DEFAULT  
|MIPS_SCOMMON|print_output_debug_flag

Since the save/restore of print_output_debug_flag seems to be for the
benefit of w32 only, I've tried the following instead:

Breakpoint 3, xsignal1 (error_symbol=274352730, arg=274355066) at 
/vol/src/gnu/emacs/emacs-24.0.90/src/eval.c:1773
(gdb) dis 3
(gdb) frame 3
#3  0x1029963c in funcall_lambda (fun=272695997, nargs=0, 
arg_vector=0x7ffb7d34) at /vol/src/gnu/emacs/emacs-24.0.90/src/eval.c:3139
(gdb) set $tmp = fun
(gdb) set safe_debug_print ($tmp)
emacs: Invalid function: external-debugging-output
[Inferior 1 (process 24041591) exited with code 01]
The program being debugged exited while in a function called from GDB.
Evaluation of the expression containing the function
(safe_debug_print) will be abandoned.
(gdb) frame 1
No registers.

Seriously ugly.  This is all gdb 7.3, so nothing newer to try (except
perhaps for gdb mainline).

        Rainer

-- 
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University





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