Re: [Vala] unexpected error while compiling a vala file

[Bob Hazard <linuxoflondon googlemail com>]

On 20 August 2010 08:30, Mildred Ki'Lya <ml mildred593 gmail com> wrote:
> Hi,
>
> I'm having troubles to compile the vala file attached to this e-mail.
> The command line is:
>
>    valac --pkg=gio-2.0 --pkg=glib-2.0 email.vala
>
> When the lines containing `buffer += c` are commented out (lines 67 and
> 70), the program compiles.
>
> I use vala 0.9.3 as packaged by the Fedora distribution.
> The vala compiler gives me the following errors:
>
> ----------------------------------------------------------------------
>
> email.vala:25.13-25.37: warning: unhandled error `GLib.Error'
>        if (parent.read (&c, 1, null) == 0){
>            ^^^^^^^^^^^^^^^^^^^^^^^^^
> email.vala:41.5-41.32: warning: method
> `Email.EmailInputStream.push_back_buffer' never used
>    public void push_back_buffer (uint8[] buffer) {
>    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> email.vala:51.5-51.25: warning: method
> `Email.EmailInputStream.read_line' never used
>    public bool read_line(ref uint8[] buffer){
>    ^^^^^^^^^^^^^^^^^^^^^
> **
> ERROR:valaccodearraymodule.c:1407:vala_ccode_array_module_real_get_array_size_cexpression:
> code should not be reached
> zsh: abort (core dumped)  valac --pkg=gio-2.0 --pkg=glib-2.0 email.vala
>
> ----------------------------------------------------------------------
>
> Apparently, this is an assertion failure in the compiler code that
> causes this error.
>
> What do you think of this error? Am I doing wrong things?
>
> By the way, I couldn't find any reference on the built-in operations
> available on the vala arrays (buffer.length, buffer.resize(int), buffer
> +=, ...)
> Where do you think I could find documentation on that ?
>
> Note: I'm using uint8[] instead of string because I just want to
> manipulate a stream of bytes that very often looks like a string. I
> don't want to deal with encoding problems. Is there a better solution?
>
> Thanks.
>
> Mildred
>
>
> --
> Mildred Ki'Lya
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I'm just a noob but what about changing "uint8[] buffer " to
"ArrayList<uint8> buffer" and use buffer.add (c);? (--pkg gee-1.0)

You can still access an arraylist with buffer[i] later for convenience.

Also if you enclose line 26 in in a try/catch that first warning goes away.

try {
        if (parent.read (&c, 1, null) == 0){
          eof = true;
          return false;
        }
    } catch (Error e) {
        error ("%s", e.message);
    }



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