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Dump of alternate .debuginfo


Hi,

I created a dump of a library debug-info by the "eu-readelf 
--debug-dump=info" command. The formal_parameter of a subprogram has 
type "(GNU_ref_alt) [    N]", but N is not described anywhere in the dump.

I have take a look at the source code of elfutils and found, that 
DW_FORM_GNU_ref_alt is an offset in the "alternate debuginfo":

     DW_FORM_GNU_ref_alt = 0x1f20, /* offset in alternate .debuginfo.  */
     DW_FORM_GNU_strp_alt = 0x1f21 /* offset in alternate .debug_str. */

How can I read/dump this "alternate debuginfo"?

Thanks.

-- 
Andrey Ponomarenko, ROSA Lab.


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