Re: [DynInst_API:] SymtabAPI - dataUnknownType

[Fabian Mager <fabian.mager@xxxxxxxxxxxxxx>]

Bill Williams <bill@xxxxxxxxxxx> schrieb am Mon Dec 15 2014 at 6:12:08 PM:

On 12/09/2014 04:57 AM, Fabian Mager wrote:
> Hello everyone,
>
> I inspect function parameters and need to determine their sizes. This
> works quite well so far but currently I work with libpng and have some
> problems.
>
>Â Â Â typedef struct png_struct_def png_struct;
>Â Â Â typedef const png_struct * restrict png_const_structrp;
>Â Â Â png_get_header_ver(png_const_structrp png_ptr) {...}
>
> When inspecting the function parameter png_ptr, I expect to get the size
> of a pointer but instead it is 0. The dataClass is 9 which means that
> png_ptr is a typeTypedef. The size of such a type is derived from its
> baseType which I can get via getConstituentType() I assume. The baseType
> in this scenario has dataClass 11 which means dataUnknownType and hence
> size 0. The question is, how do I get the size of my parameter?
>
What version of Dyninst is this? I know we've fixed quite a few type
size computation problems in 8.2.1, but if this is with that version we
obviously haven't gotten all of them...

I'm using the current version 8.2.1.Â