On Tuesday, October 19, 2010 1:23:57 pm Ken Werner wrote:
> Hi,
> 
> Section 5.4 of the DWARF standard allows to specify extra padding bytes for
> array type entries by using the DW_AT_byte_size attribute. This is used for
> example to specify the types for OpenCL 3-component vectors whose size and
> alignment are those of 4-component vectors. Currently the GDB does not
> understand this mechanism and the attached patch attempts to fix this. It
> extends the DWARF reader (dwarf2read.c:read_array_type) to respect the
> DW_AT_byte_size attribute and set the length of the array accordingly. This
> breaks the code that assumes that the number of elements of an array is
> simply the length of the array type divided by the length of the element
> type. Therefore the patch queries the number of array elements using the
> get_array_bounds function that has been enhanced to only return the bounds
> if they are defined (TYPE_ARRAY_[LOWER|UPPER]_BOUND_IS_UNDEFINED). In
> order to prevent the inclusion of the valprint.h header the
> get_array_bounds function has been moved from valprint.[c|h] to
> gdbtypes.[c|h].
> Tested on i686-*-linux-gnu with no regressions.
> 
> Regards
> Ken Werner

Hm, that patch lacks the chunk that changes the c_type_print_varspec_suffix 
function. Here is the full version.

Regards
Ken