.\" Copyright (c) 2011 Kai Wang
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.\" $Id: dwarf_add_AT_comp_dir.3 3640 2018-10-14 14:09:13Z jkoshy $
.\"
.Dd September 4, 2011
.Dt DWARF_ADD_AT_COMP_DIR 3
.Os
.Sh NAME
.Nm dwarf_add_AT_comp_dir
.Nd create and attach a DW_AT_comp_dir attribute
.Sh LIBRARY
.Lb libdwarf
.Sh SYNOPSIS
.In libdwarf.h
.Ft Dwarf_P_Attribute
.Fo dwarf_add_AT_comp_dir
.Fa "Dwarf_P_Die die"
.Fa "char *dir"
.Fa "Dwarf_Error *err"
.Fc
.Sh DESCRIPTION
Function
.Fn dwarf_add_AT_comp_dir
creates a
.Dv DW_AT_comp_dir
attribute descriptor and attaches it to the debugging information
entry referenced by argument
.Ar die .
The created attribute will have DWARF form
.Dv DW_FORM_strp .
.Pp
Argument
.Ar die
should reference a debugging information entry allocated using
.Xr dwarf_new_die 3 .
.Pp
Argument
.Ar dir
should point to a NUL-terminated string which will become the value of
the created attribute.
.Pp
If argument
.Ar err
is not NULL, it will be used to store error information in case
of an error.
.Sh RETURN VALUES
On success, function
.Fn dwarf_add_AT_comp_dir
returns the created attribute descriptor.
In case of an error, function
.Fn dwarf_add_AT_comp_dir
returns
.Dv DW_DLV_BADADDR
and sets the argument
.Ar err .
.Sh ERRORS
Function
.Fn dwarf_add_AT_comp_dir
can fail with:
.Bl -tag -width ".Bq Er DW_DLE_ARGUMENT"
.It Bq Er DW_DLE_ARGUMENT
Either of the arguments
.Ar die
or
.Ar dir
was NULL.
.It Bq Er DW_DLE_MEMORY
An out of memory condition was encountered during the execution of the
function.
.El
.Sh SEE ALSO
.Xr dwarf 3 ,
.Xr dwarf_add_AT_const_value_string 3 ,
.Xr dwarf_add_AT_name 3 ,
.Xr dwarf_add_AT_producer 3 ,
.Xr dwarf_add_AT_string 3 ,
.Xr dwarf_new_die 3