NAME
dwarf_formblock —
return the value of a
BLOCK attribute
LIBRARY
DWARF Access Library (libdwarf, -ldwarf)
SYNOPSIS
#include <libdwarf.h>
int
dwarf_formblock(
Dwarf_Attribute attr,
Dwarf_Block **ret,
Dwarf_Error
*err);
DESCRIPTION
Function
dwarf_formblock() sets the location pointed to by
argument
ret to a pointer to a
Dwarf_Block structure containing the value of the
attribute referenced by argument
attr. The form of
argument
attr must be one of
DW_FORM_block
,
DW_FORM_block1
,
DW_FORM_block2
or
DW_FORM_block4
.
If argument
err is not NULL, it will be used to return an
error descriptor in case of an error.
Memory Management
The memory area referenced by the returned pointer is managed by the DWARF(3)
library. The application should not attempt to free this memory area. Portable
code may indicate that the memory area is to be freed by using
dwarf_dealloc(3).
RETURN VALUES
Function
dwarf_formblock() returns
DW_DLV_OK
on success. In case of an error, it returns
DW_DLV_ERROR
and sets argument
err.
ERRORS
Function
dwarf_formblock() 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.
SEE ALSO
dwarf(3),
dwarf_attr(3),
dwarf_formflag(3),
dwarf_formref(3),
dwarf_formsdata(3),
dwarf_formsig8(3),
dwarf_formstring(3),
dwarf_formudata(3),
dwarf_hasattr(3)