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add_failed_symbols.h
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1/*******************************************************************\
2
3Module: Pointer Dereferencing
4
5Author: Daniel Kroening, kroening@kroening.com
6
7\*******************************************************************/
8
11
12#ifndef CPROVER_POINTER_ANALYSIS_ADD_FAILED_SYMBOLS_H
13#define CPROVER_POINTER_ANALYSIS_ADD_FAILED_SYMBOLS_H
14
15#include <util/expr.h>
16#include <util/optional.h>
17
19class symbolt;
20class namespacet;
21class symbol_exprt;
22
23void add_failed_symbols(symbol_table_baset &symbol_table);
24
26 const symbolt &symbol, symbol_table_baset &symbol_table);
27
28irep_idt failed_symbol_id(const irep_idt &identifier);
29
36get_failed_symbol(const symbol_exprt &expr, const namespacet &ns);
37
39inline bool is_failed_symbol(const exprt &expr)
40{
41 return expr.type().get_bool(ID_C_is_failed_symbol);
42}
43
44#endif // CPROVER_POINTER_ANALYSIS_ADD_FAILED_SYMBOLS_H
void add_failed_symbol_if_needed(const symbolt &symbol, symbol_table_baset &symbol_table)
Create a failed-dereference symbol for the given base symbol if it is pointer-typed,...
bool is_failed_symbol(const exprt &expr)
Return true if, and only if, expr is the result of failed dereferencing.
irep_idt failed_symbol_id(const irep_idt &identifier)
Get the name of the special symbol used to denote an unknown referee pointed to by a given pointer-ty...
optionalt< symbol_exprt > get_failed_symbol(const symbol_exprt &expr, const namespacet &ns)
Get the failed-dereference symbol for the given symbol.
void add_failed_symbols(symbol_table_baset &symbol_table)
Create a failed-dereference symbol for all symbols in the given table that need one (i....
dstringt has one field, an unsigned integer no which is an index into a static table of strings.
Definition dstring.h:39
Base class for all expressions.
Definition expr.h:56
typet & type()
Return the type of the expression.
Definition expr.h:84
bool get_bool(const irep_idt &name) const
Definition irep.cpp:57
A namespacet is essentially one or two symbol tables bound together, to allow for symbol lookups in t...
Definition namespace.h:91
Expression to hold a symbol (variable)
Definition std_expr.h:113
The symbol table base class interface.
Symbol table entry.
Definition symbol.h:28
nonstd::optional< T > optionalt
Definition optional.h:35