Ok,
I used this advice:
http://www.haskell.org/haskellwiki/GHC/Using_the_FFI#Importing_C_functions_that_turn_out_to_be_CPP_macros
to make 'xmlFree' callable from Haskell.
I was completly wrong in my first post...
I do apologize.
On Sun, Nov 29, 2009 at 8:56 PM, El Barto elbart...@gmail.com wrote:
Hello,
I get a segfault when I do
str - peekCString ptr
free ptr
return (Just str)
But not when I don't free the C pointer.
I also get the same behaviour with ByteString.packCString...
Could you please tell me if the memory is correctly freed by GHC when I
don't do it myself?
And how can I
Could you expand on this fragment of code? Perhaps a fullying
compilable example? It depends how you are getting the pointer, not
how you are reading data out of the pointer. For example, if you use
withCString to get ptr then the memory will be freed automatically.
Thomas
On Sun, Nov 29,
Hello El,
Sunday, November 29, 2009, 8:00:02 PM, you wrote:
segfault is due to free, you may omit peekCString call.
you should free only memory that was malloced and not freed other way
Hello,
I get a segfault when I do
str - peekCString ptr
free ptr
return (Just str)
But not when I
On Sun, 2009-11-29 at 18:00 +0100, El Barto wrote:
Hello,
I get a segfault when I do
str - peekCString ptr
free ptr
return (Just str)
As Thomas says, you've not really given us enough info here.
I'll make some guesses and observations anyway :-)
But not when I don't free the C pointer.
Thanks for your help time,
I checked the C API documentation:
http://xmlsoft.org/html/libxml-xmlreader.html#xmlTextReaderValue
The result must be deallocated with xmlFree()
I pushed the sources here:
http://github.com/gwenn/libxml-reader
My problem is with the function at line 249 in
