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DWARF_EXPR_CURRENT_OFFSET(3) FreeBSD Library Functions Manual DWARF_EXPR_CURRENT_OFFSET(3)

dwarf_expr_current_offset
retrieve the number of bytes in a location expression stream

DWARF Access Library (libdwarf, -ldwarf)

#include <libdwarf.h>

Dwarf_Unsigned
dwarf_expr_current_offset(Dwarf_P_Expr expr, Dwarf_Error *err);

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.

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.

Function dwarf_expr_current_offset() can fail with:
[]
Argument expr was NULL.

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 FreeBSD 13.1-RELEASE

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