e2d950733e
On 32-bit systems, we must store the shape ID in the gen_ivtbl to not lose the shape. If we directly store the ST table into the generic ivar table, then we lose the shape. This makes it impossible to determine the shape of the object and whether it is too complex or not.
38 lines
964 B
C
38 lines
964 B
C
#ifndef RUBY_TOPLEVEL_VARIABLE_H /*-*-C-*-vi:se ft=c:*/
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#define RUBY_TOPLEVEL_VARIABLE_H
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/**
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* @author Ruby developers <ruby-core@ruby-lang.org>
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* @copyright This file is a part of the programming language Ruby.
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* Permission is hereby granted, to either redistribute and/or
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* modify this file, provided that the conditions mentioned in the
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* file COPYING are met. Consult the file for details.
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*/
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/* per-object */
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#include "shape.h"
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struct gen_ivtbl {
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#if !SHAPE_IN_BASIC_FLAGS
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uint16_t shape_id;
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#endif
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union {
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struct {
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uint32_t numiv;
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VALUE ivptr[1];
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} shape;
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struct {
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st_table *table;
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} complex;
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} as;
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};
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int rb_ivar_generic_ivtbl_lookup(VALUE obj, struct gen_ivtbl **);
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#if !SHAPE_IN_BASIC_FLAGS
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shape_id_t rb_generic_shape_id(VALUE obj);
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#endif
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#endif /* RUBY_TOPLEVEL_VARIABLE_H */
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