Re: [DynInst_API:] SymtabAPI - dataUnknownType

[Bill Williams <bill@xxxxxxxxxxx>]

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.
>
>      typedef struct png_struct_def png_struct;
>      typedef const png_struct * restrict png_const_structrp;
>      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...
> Thanks,
> Fabian
>
>
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--
--bw

Bill Williams
Paradyn Project
bill@xxxxxxxxxxx