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

DWARF_ADD_AT_FLAG(3)					   BSD Library Functions Manual 				      DWARF_ADD_AT_FLAG(3)

dwarf_add_AT_flag -- create and attach a flag attribute
DWARF Access Library (libdwarf, -ldwarf)
#include <libdwarf.h> Dwarf_P_Attribute dwarf_add_AT_flag(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr, Dwarf_Small flag, Dwarf_Error *err);
Function dwarf_add_AT_flag() creates an attribute descriptor belonging to the 'flag' class, and attaches it to the debugging information entry referenced by argument die. The created attribute descriptor will have DWARF form DW_FORM_flag. Argument dbg should reference a DWARF producer instance allocated using dwarf_producer_init(3) or dwarf_producer_init_b(3). Argument die should reference a debugging information entry allocated using dwarf_new_die(3). Argument attr should specify the attribute code for the new attribute descriptor. Argument flag should specify the value of the new attribute descriptor. A zero value is treated as 'false' and a non-zero value as 'true'. If argument err is not NULL, it will be used to store error information in case of an error.
On success, function dwarf_add_AT_flag() returns the created attribute descriptor. In case of an error, function dwarf_add_AT_flag() returns DW_DLV_BADADDR and sets the argument err.
Function dwarf_add_AT_flag() can fail with: [DW_DLE_ARGUMENT] Either of the arguments dbg or die was NULL. [DW_DLE_MEMORY] An out of memory condition was encountered during the execution of the function.
dwarf(3), dwarf_add_AT_signed_const(3), dwarf_add_AT_unsigned_const(3), dwarf_new_die(3), dwarf_producer_init(3), dwarf_producer_init_b(3)
September 4, 2011 BSD