Ruby DL::Importable struct issue

[Kevin Howe]

Hi,

The ruby182-14RC9.exe (one click installer) version of Ruby breaks some DL
code in a gem of mine (tidy on rubyforge). The problem is with the first
struct item which defines "byte* bp". I get the following error when I run
the script at the bottom. If "byte*" is deliberately no longer supported,
what would be a valid equivalent?

(eval):2 in '[]': unsupported type 'p' (DL:LTypeError)
from (eval):2:in 'bp'

#-------
require 'dl/import'
require 'dl/struct'

extend DL::Importable

# http://tidy.sourceforge.net/docs/api/struct__TidyBuffer.html
TidyBuffer = struct [
"byte* bp",
"uint size",
"uint allocated",
"uint next"
]

struct = TidyBuffer.malloc
puts struct.bp
#-------

 

[Tim Sutherland]

Hi,

The ruby182-14RC9.exe (one click installer) version of Ruby breaks some DL
code in a gem of mine (tidy on rubyforge). The problem is with the first
struct item which defines "byte* bp". I get the following error when I run
the script at the bottom. If "byte*" is deliberately no longer supported,
what would be a valid equivalent?

(eval):2 in '[]': unsupported type 'p' (DL:LTypeError)
from (eval):2:in 'bp'

#-------
require 'dl/import'
require 'dl/struct'

extend DL::Importable

# http://tidy.sourceforge.net/docs/api/struct__TidyBuffer.html
TidyBuffer = struct [
"byte* bp",
"uint size",
"uint allocated",
"uint next"
]

struct = TidyBuffer.malloc
puts struct.bp
#-------

Try "char* bp" or "unsigned char* bp".

 

[Kevin Howe]

I get the following error

(eval):2 in '[]': unsupported type 'p' (DL:LTypeError)
from (eval):2:in 'bp'

Try "char* bp" or "unsigned char* bp".

"char* bp" produces the same error, but with type 's' instead of type 'p'.
"unsigned char*" produces an "invalid element" error. I also tried "uint*
bp" and "int* bp", but they give the same original error.

 

[Tim Sutherland]

I get the following error
(eval):2 in '[]': unsupported type 'p' (DL:LTypeError)
from (eval):2:in 'bp'

Try "char* bp" or "unsigned char* bp".

"char* bp" produces the same error, but with type 's' instead of type 'p'.
"unsigned char*" produces an "invalid element" error. I also tried "uint*
bp" and "int* bp", but they give the same original error.

Okay, this is a bug in newer versions of the dl extension.

e.g. current CVS ruby/ext/dl/sample/libc.rb fails with
10
true
false
"ab"
(eval):5:in `call': unsupported type `p' (DL:LTypeError)
from (eval):5:in `qsort'
from libc.rb:62


$ ruby -v
ruby 1.9.0 (2004-11-24) [i686-linux]

There are a couple of places in ptr.c which do a `switch' on the type ('I',
'S' etc.) but only handle upper-case types like 'P' and not lower-case like
'p' (the latter are the pointer versions).

`rb_dlptr_aref' and `cary2ary' in particular.

 

[Takaaki Tateishi]

Tim Sutherland said:

I get the following error
(eval):2 in '[]': unsupported type 'p' (DL:LTypeError)
from (eval):2:in 'bp'

Okay, this is a bug in newer versions of the dl extension.

I fixed that.
Please replace import.rb, types.rb and struct.rb in lib/ruby/dl
with files shown at the following URL.
http://www.ruby-lang.org/cgi-bin/cvsweb.cgi/ruby/ext/dl/lib/dl/

Regards,

 

[Kevin Howe]

Okay, this is a bug in newer versions of the dl extension.

I fixed that.
Please replace import.rb, types.rb and struct.rb in lib/ruby/dl
with files shown at the following URL.
http://www.ruby-lang.org/cgi-bin/cvsweb.cgi/ruby/ext/dl/lib/dl/

When I use these files I get the following error:

types.rb:236:in 'encode_type': unknown type: uint (TypeError)

 

[Takaaki Tateishi]

Kevin Howe said:

When I use these files I get the following error:
types.rb:236:in 'encode_type': unknown type: uint (TypeError)

Could you try again?

Thanks,

 

[Kevin Howe]

Could you try again?

That seems to have done it, thanks!

- Kevin