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DWARF_HASATTR(3) FreeBSD Library Functions Manual DWARF_HASATTR(3)

dwarf_hasattr
check for the presence of an attribute

DWARF Access Library (libdwarf, -ldwarf)

#include <libdwarf.h>

int
dwarf_hasattr(Dwarf_Die die, Dwarf_Half attr, Dwarf_Bool *ret_bool, Dwarf_Error *err);

Function dwarf_hasattr() tests whether the debugging information entry referenced in argument die contains the attribute named by argument attr. Legal values for argument attr are those denoted by the DW_AT_* constants in the DWARF specification.

If the named attribute is present in the debugging information entry, function dwarf_hasattr() returns a non-zero value in the location pointed to by argument ret_bool. If the named attribute is not present, a zero is written instead.

If argument err is not NULL, it will be used to return an error descriptor in case of an error.

On success, function dwarf_hasattr() returns DW_DLV_OK. In case of an error, it returns DW_DLV_ERROR and sets argument err.

Function dwarf_hasattr() can fail with the following error:
[]
Either of argument die or ret_bool was NULL.

dwarf(3), dwarf_attr(3), dwarf_whatattr(3)
April 17, 2010 FreeBSD 13.1-RELEASE

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