DWARF_EXPR_CURRENT_OFFSET(3) | Library Functions Manual | DWARF_EXPR_CURRENT_OFFSET(3)

# NAME

dwarf_expr_current_offset — retrieve the number of bytes in a location expression stream

# LIBRARY

DWARF Access Library (libdwarf, -ldwarf)

# SYNOPSIS

#include <libdwarf.h>
Dwarf_Unsigned
dwarf_expr_current_offset(Dwarf_P_Expr expr, Dwarf_Error *err);

# DESCRIPTION

Function dwarf_expr_current_offset() returns the size in bytes of the stream representation of a location expression.
Argument expr should reference a location expression descriptor allocated using dwarf_new_expr(3).
If argument err is not NULL, it will be used to store error information in case of an error.

# RETURN VALUES

On success, function dwarf_expr_current_offset() returns the size in bytes of the location descriptor's stream representation. In case of an error, function dwarf_expr_current_offset() returns `DW_DLV_NOCOUNT` and sets the argument err.

# ERRORS

Function dwarf_expr_current_offset() can fail with:

[`DW_DLE_ARGUMENT`]
  Argument expr was NULL.

# SEE ALSO

dwarf(3), dwarf_add_expr_addr(3), dwarf_add_expr_addr_b(3), dwarf_add_expr_gen(3), dwarf_expr_into_block(3), dwarf_new_expr(3)

September 13, 2011 | NetBSD 8.2