Re: error: invalid character `' (ASCII 0) near line 164, column 2

[Ben Abbott]

On Dec 26, 2009, at 12:37 PM, Ben Abbott wrote:

> On Dec 25, 2009, at 4:24 PM, Ben Abbott wrote:
> 
>> Is anyone else seeing this?
>> 
>> ../../run-octave -f -q -H -p . --eval "geometryimages ('voronoi', 'txt');"
>> warning: invalid character `' (ASCII 0) near line 92, column 2
>> error: invalid character `' (ASCII 0) near line 164, column 2
>> parse error near line 164 of file 
>> /Users/bpabbott/Development/mercurial/local_clone/scripts/set/unique.m
>> 
>> syntax error
>> 
>> error: called from:
>> error:   
>> /Users/bpabbott/Development/mercurial/local_clone/scripts/optimization/__all_opts__.m
>>  at line 56, column 11
>> error:   
>> /Users/bpabbott/Development/mercurial/local_clone/scripts/optimization/PKG_ADD
>>  at line 1, column 0
>> 
>> make[3]: *** [voronoi.txt] Error 1
>> make[2]: *** [all-recursive] Error 1
>> make[1]: *** [all-recursive] Error 1
>> make: *** [all] Error 2
>> 
>> Ben
> 
> 
> Line 92 is empty, and there are only 163 lines in the file unique.m, so 164 
> does not exist. My octave does run, so I took a look at the characters in 
> unique.m.
> 
> octave:3> fid = fopen('unique.m')
> fid =  4
> octave:4> str = fread (fid, "char=>char").';
> octave:5> fclose(fid)
> ans = 0
> octave:6> unique(double(str))
> ans =
> 
> Columns 1 through 16:
> 
>    10    32    33    34    35    37    38    39    40    41    42    43    44 
>    45    46    47
> 
> Columns 17 through 32:
> 
>    48    49    50    51    52    53    54    55    56    57    58    59    60 
>    61    62    64
> 
> Columns 33 through 48:
> 
>    65    66    67    69    70    71    72    73    74    75    76    77    78 
>    79    80    82
> 
> Columns 49 through 64:
> 
>    83    84    85    87    89    91    92    93    95    97    98    99   100 
>   101   102   103
> 
> Columns 65 through 80:
> 
>   104   105   106   107   108   109   110   111   112   113   114   115   116 
>   117   118   119
> 
> Columns 81 through 85:
> 
>   120   121   122   123   125
> 
> octave:7> disp(char(unique(double(str))))
> 
> !"#%&'()*+,-./0123456789:;<=>@ABCEFGHIJKLMNOPRSTUWY[\]_abcdefghijklmnopqrstuvwxyz{}
> 
> I don't see anything usual.
> 
> Ben

Looks like I'm lost here. When I edit unique.m, and add \n to the end of the 
file...

Next I see errors with ..

warning: invalid character `' (ASCII 0) near line 92, column 2
warning: no defaults for function `fsolve'
warning: no defaults for function `fzero'
warning: no defaults for function `lsqnonneg'
warning: no defaults for function `pqpnonneg'
error: invalid character `' (ASCII 0) near line 81, column 2
parse error near line 81 of file 
/Users/bpabbott/Development/mercurial/local_clone/scripts/miscellaneous/fullfile.m

  syntax error

error: evaluating argument list element number 1
error: called from:
error:   /Users/bpabbott/Development/mercurial/local_clone/scripts/pkg/pkg.m at 
line 203, column 3
error:   
/Users/bpabbott/Development/mercurial/local_clone/scripts/startup/main-rcfile 
at line 20, column 1

The file fullfile.m also does not end with an EOL character.  After adding EOL 
characters to each of the files below ...

unique.m
fullfile.m
strrep.m
compare_versions.m
isa.m
strsplit.m
strcmpi.m

Octave then starts with the warnings ...

warning: invalid character `' (ASCII 0) near line 92, column 2
warning: no defaults for function `fsolve'
warning: no defaults for function `fzero'
warning: no defaults for function `lsqnonneg'
warning: no defaults for function `pqpnonneg'
octave:1> 

After searching the sources, it appears to me that the warning is part of lex.cc

2820 case 89:
2821 YY_RULE_SETUP
2822 #line 1032 "lex.ll"
2823 {
2824     LEXER_DEBUG (".");
2825 
2826     xunput (octave_text[0], octave_text);
2827 
2828     int c = text_yyinput ();
2829 
2830     if (c != EOF)
2831       {
2832         current_input_column++;
2833 
2834         error ("invalid character `%s' (ASCII %d) near line %d, column %d",
2835                undo_string_escape (static_cast<char> (c)), c,
2836                input_line_number, current_input_column);
2837 
2838         return LEXICAL_ERROR;
2839       }
2840     else
2841       TOK_RETURN (END_OF_INPUT);
2842   }
2843         YY_BREAK

To test that, I tried ..

2820 case 89:
2821 YY_RULE_SETUP
2822 #line 1032 "lex.ll"
2823 {
2824     LEXER_DEBUG (".");
2825 
2826     xunput (octave_text[0], octave_text);
2827 
2828     int c = text_yyinput ();
2829 
2830 /*  if (c != EOF)
2831       {
2832         current_input_column++;
2833 
2834         error ("invalid character `%s' (ASCII %d) near line %d, column %d",
2835                undo_string_escape (static_cast<char> (c)), c,
2836                input_line_number, current_input_column);
2837 
2838         return LEXICAL_ERROR;
2839       }
2840     else */
2841       TOK_RETURN (END_OF_INPUT);
2842   }
2843         YY_BREAK

The result was a functional Octave (no warnings or errors on startup).

Perhaps this problem is due to ...

        http://hg.savannah.gnu.org/hgweb/octave/rev/7ad32bf759c3

        
https://www-old.cae.wisc.edu/pipermail/octave-maintainers/2009-December/014382.html

Ben