dwarf_formflag —
return the value of a BOOLEAN class
attribute
DWARF Access Library (libdwarf, -ldwarf)
#include
<libdwarf.h>
int
dwarf_formflag(
Dwarf_Attribute
attr,
Dwarf_Bool *ret,
Dwarf_Error *err);
Function
dwarf_formflag() sets the location pointed
to by argument
ret to 1 if the attribute
referenced by argument
attr has a non-zero
value, or 0 otherwise. The form of argument
attr must be one of
DW_FORM_flag
or
DW_FORM_flag_present
.
If argument
err is not NULL, it will be used to
return an error descriptor in case of an error.
Function
dwarf_formflag() returns
DW_DLV_OK
on success. In case of an error,
it returns
DW_DLV_ERROR
and sets argument
err.
Function
dwarf_formflag() may fail with the
following errors:
-
-
- [
DW_DLE_ARGUMENT
]
- Either of arguments attr
or ret was NULL.
-
-
- [
DW_DLE_ATTR_FORM_BAD
]
- The attribute referenced by argument
attr was not of a permitted kind.
dwarf(3),
dwarf_attr(3),
dwarf_formblock(3),
dwarf_formref(3),
dwarf_formsdata(3),
dwarf_formsig8(3),
dwarf_formstring(3),
dwarf_formudata(3),
dwarf_hasattr(3)