.\"	$NetBSD: dwarf_formsig8.3,v 1.5 2022/03/14 20:50:48 jkoshy Exp $
.\"
.\" Copyright (c) 2010 Joseph Koshy
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.\" Id: dwarf_formsig8.3 3962 2022-03-12 15:56:10Z jkoshy
.\"
.Dd July 24, 2010
.Dt DWARF_FORMSIG8 3
.Os
.Sh NAME
.Nm dwarf_formsig8
.Nd return the 64-bit type signature for a DWARF type
.Sh LIBRARY
.Lb libdwarf
.Sh SYNOPSIS
.In libdwarf.h
.Ft int
.Fo dwarf_formsig8
.Fa "Dwarf_Attribute attr"
.Fa "Dwarf_Sig8 *ret"
.Fa "Dwarf_Error *err"
.Fc
.Sh DESCRIPTION
Function
.Fn dwarf_formsig8
sets the location pointed to by argument
.Fa ret
to the 64-bit type signature that is the value of
the attribute referenced by argument
.Fa attr .
The form of argument
.Fa attr
must be
.Dv DW_FORM_ref_sig8 .
.Pp
If argument
.Fa err
is not
.Dv NULL ,
it will be used to return an error descriptor in case of an error.
.Sh RETURN VALUES
Function
.Fn dwarf_formsig8
returns
.Dv DW_DLV_OK
on success.
In case of an error, it returns
.Dv DW_DLV_ERROR
and sets argument
.Fa err .
.Sh ERRORS
Function
.Fn dwarf_formsig8
may fail with the following errors:
.Bl -tag -width ".Bq Er DW_DLE_ATTR_FORM_BAD"
.It Bq Er DW_DLE_ARGUMENT
Either of arguments
.Fa attr
or
.Fa ret
was
.Dv NULL .
.It Bq Er DW_DLE_ATTR_FORM_BAD
The attribute referenced by argument
.Fa attr
was not of a permitted kind.
.El
.Sh SEE ALSO
.Xr dwarf 3 ,
.Xr dwarf_attr 3 ,
.Xr dwarf_formflag 3 ,
.Xr dwarf_formref 3 ,
.Xr dwarf_formsdata 3 ,
.Xr dwarf_formstring 3 ,
.Xr dwarf_formudata 3 ,
.Xr dwarf_hasattr 3
.Sh HISTORY
Type signatures were added in version 4 of the DWARF specification.