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FreeBSD 11.0 - man page for dwarf_hasattr (freebsd section 3)

DWARF_HASATTR(3)					   BSD Library Functions Manual 					  DWARF_HASATTR(3)

NAME
dwarf_hasattr -- check for the presence of an attribute
LIBRARY
DWARF Access Library (libdwarf, -ldwarf)
SYNOPSIS
#include <libdwarf.h> int dwarf_hasattr(Dwarf_Die die, Dwarf_Half attr, Dwarf_Bool *ret_bool, Dwarf_Error *err);
DESCRIPTION
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.
RETURN VALUES
On success, function dwarf_hasattr() returns DW_DLV_OK. In case of an error, it returns DW_DLV_ERROR and sets argument err.
ERRORS
Function dwarf_hasattr() can fail with the following error: [DW_DLE_ARGUMENT] Either of argument die or ret_bool was NULL.
SEE ALSO
dwarf(3), dwarf_attr(3), dwarf_whatattr(3)
BSD
April 17, 2010 BSD

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