Re: audio check?

[Jim Langston]

It looks like a loop:

(dbx) cont
^Cdbx: warning: Interrupt ignored but forwarded to child.
address@hidden (address@hidden) signal INT (Interrupt) in std::char_traits<char>::eof at 
0xfbef0124
0xfbef0124: eof       : movl     $0xffffffff,%eax
Current function is c_file_ptr_buf::underflow_common
  72         if (! bump
(dbx) list
  72         if (! bump
  73   #if defined (CXX_ISO_COMPLIANT_LIBRARY)
  74             && c != traits_type::eof ())
  75   #else
  76             && c != EOF)
  77   #endif
  78           ungetc (c, f);
  79  
  80         return c;
  81       }
(dbx) cont
^Cdbx: warning: Interrupt ignored but forwarded to child.
address@hidden (address@hidden) signal INT (Interrupt) in c_file_ptr_buf::underflow at line 53 
in file "c-file-ptr-stream.h"
  53     int_type underflow (void) { return underflow_common (false); }
(dbx) list
  53     int_type underflow (void) { return underflow_common (false); }
  54  
  55     int_type uflow (void) { return underflow_common (true); }
  56  
  57     int_type pbackfail (int_type);
  58  
  59     std::streamsize xsputn (const char*, std::streamsize);
  60  
  61     std::streamsize xsgetn (char *, std::streamsize);
  62  
(dbx) cont
^Cdbx: warning: Interrupt ignored but forwarded to child.
address@hidden (address@hidden) signal INT (Interrupt) in _ungetc_unlocked at 
0xfbe151d1
0xfbe151d1: _ungetc_unlocked+0x0011:    addl     $0x00069e30,%ebx
Current function is c_file_ptr_buf::underflow_common
  78           ungetc (c, f);
(dbx)

Jim

///////////////////////////


John W. Eaton wrote:
> On  5-Sep-2007, Jim Langston wrote:
>
> | also, also, recompiled with debugging turned on, here is an output segment
> | 
> | octave:1> A = [1:10; 1:10]/10;
> | octave:2> wavwrite("a.wav", A);
> | octave:3> [B, samples_per_sec, bits_per_sample] = wavread("a.wav");
> | ^Cdbx: warning: Interrupt ignored but forwarded to child.
> | address@hidden (address@hidden) signal INT (Interrupt) in ungetc at 0xfbe151a7
> | 0xfbe151a7: ungetc+0x0047:      movl     %eax,%edi
> | Current function is c_file_ptr_buf::underflow_common
> |    78           ungetc (c, f);
> | (dbx) list
> |    78           ungetc (c, f);
> |    79  
> |    80         return c;
> |    81       }
> |    82     else
> |    83   #if defined (CXX_ISO_COMPLIANT_LIBRARY)
> |    84       return traits_type::eof ();
> |    85   #else
> |    86       return EOF;
> |    87   #endif
> | (dbx) print c
> | c = 82
> | (dbx) print f
> | f = 0xfbe82ad8
> | (dbx) print &f
> | &f = 0x87a9850
> | (dbx) print *f
> | *f = {
> |     _cnt          = 84
> |     _ptr          = 0x87bad24 "RIFFL"
> |     _base         = 0x87bad24 "RIFFL"
> |     _flag         = '\t'
> |     _magic        = '\005'
> |     __orientation = 0
> |     __ionolock    = 0
> |     __seekable    = 1U
> |     __extendedfd  = 0
> |     __xf_nocheck  = 0
> |     __filler      = 0
> | }
> | (dbx)
>
> What happens if you continue execution from this point?  Is it stuck
> on this line (ungetc is never returning) or is it stuck in an infinite
> loop, and you just happened to interrupt it at this point in the loop?
>
> jwe
>   


--
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Jim Langston
Sun Microsystems, Inc.

(877) 854-5583 (AccessLine)
AIM: jl9594
address@hidden