---
name: "dwarf_add_AT_string"
section: "3"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["freebsd"]
url: "https://new.carta.tech/dwarf_add_AT_string"
---

# dwarf\_add\_AT\_string(3)

create and attach a string class attribute

## NAME

**dwarf\_add\_AT\_string** – create and attach a string class attribute

## LIBRARY

library “libdwarf”

## SYNOPSIS

**#include \<libdwarf.h\>**

*Dwarf\_P\_Attribute*\

**dwarf\_add\_AT\_string**(*Dwarf\_P\_Debug dbg*, *Dwarf\_P\_Die die*, *Dwarf\_Half attr*, *char \*str*, *Dwarf\_Error \*err*);

## DESCRIPTION

Function **dwarf\_add\_AT\_string**() creates an attribute descriptor belonging to the ‘string’ class and attaches it to the debugging information entry referenced by argument *die*. The created attribute descriptor will have DWARF form DW\_FORM\_strp.

Argument *dbg* should reference a DWARF producer instance allocated using [dwarf\_producer\_init(3)](/dwarf_producer_init/3.md) or [dwarf\_producer\_init\_b(3)](/dwarf_producer_init_b/3.md).

Argument *die* should reference a debugging information entry allocated using [dwarf\_new\_die(3)](/dwarf_new_die/3.md).

Argument *attr* should specify the attribute code for the created attribute descriptor.

Argument *str* should hold a pointer to a NUL-terminated string which will become the value of the created attribute descriptor.

If argument *err* is not NULL, it will be used to store error information in case of an error.

## RETURN VALUES

On success, function **dwarf\_add\_AT\_string**() returns the created attribute descriptor. In case of an error, function **dwarf\_add\_AT\_string**() returns DW\_DLV\_BADADDR and sets the argument *err*.

## ERRORS

Function **dwarf\_add\_AT\_string**() can fail with:

- \[DW\_DLE\_ARGUMENT\]

  One of the arguments *dbg*, *die* or *str* was NULL.

- \[DW\_DLE\_MEMORY\]

  An out of memory condition was encountered during the execution of the function.

## SEE ALSO

[dwarf(3)](/dwarf/3.md), [dwarf\_add\_AT\_const\_value\_string(3)](/dwarf_add_AT_const_value_string/3.md), [dwarf\_add\_AT\_name(3)](/dwarf_add_AT_name/3.md), [dwarf\_new\_die(3)](/dwarf_new_die/3.md), [dwarf\_producer\_init(3)](/dwarf_producer_init/3.md), [dwarf\_producer\_init\_b(3)](/dwarf_producer_init_b/3.md)