Re: [DynInst_API:] SymtabAPI - dataUnknownType

[Bill Williams <bill@xxxxxxxxxxx>]

Do you mind sending over your mutatee (libpng and/or the program using 
it)? I can poke around with dwarfdump and our dwarf parser's debug 
output and see what's up here. Turnaround may be a bit slow, between the 
holidays and some other projects with fixed deadlines I've got going, 
but I'll do what I can.
On 12/16/2014 04:51 AM, Fabian Mager wrote:
> Bill Williams <bill@xxxxxxxxxxx <mailto: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.
>      >
>      >      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...
>
>
> I'm using the current version 8.2.1.
>
>
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--
--bw

Bill Williams
Paradyn Project
bill@xxxxxxxxxxx