CBMC
havoc_assigns_targetst Class Reference

A class that further overrides the "safe" havoc utilities, and adds support for havocing pointer_object expressions. More...

#include <utils.h>

+ Inheritance diagram for havoc_assigns_targetst:
+ Collaboration diagram for havoc_assigns_targetst:

Public Member Functions

 havoc_assigns_targetst (const assignst &mod, symbol_tablet &st, message_handlert &message_handler, const irep_idt &mode)
 
void append_havoc_pointer_code (const source_locationt location, const exprt &ptr_to_ptr, goto_programt &dest)
 
void append_havoc_slice_code (const source_locationt location, const exprt &ptr, const exprt &size, goto_programt &dest)
 
void append_havoc_code_for_expr (const source_locationt location, const exprt &expr, goto_programt &dest)
 Append goto instructions to havoc a single expression expr More...
 
- Public Member Functions inherited from havoc_if_validt
 havoc_if_validt (const assignst &mod, const namespacet &ns)
 
void append_object_havoc_code_for_expr (const source_locationt location, const exprt &expr, goto_programt &dest) const override
 Append goto instructions to havoc the underlying object of expr More...
 
void append_scalar_havoc_code_for_expr (const source_locationt location, const exprt &expr, goto_programt &dest) const override
 Append goto instructions to havoc the value of expr More...
 
- Public Member Functions inherited from havoc_utilst
 havoc_utilst (const assignst &mod, const namespacet &ns)
 
void append_full_havoc_code (const source_locationt location, goto_programt &dest)
 Append goto instructions to havoc the full assigns set. More...
 

Public Attributes

namespacet ns
 
cleanert cleaner
 
messaget log
 
const irep_idtmode
 

Additional Inherited Members

- Protected Attributes inherited from havoc_if_validt
const namespacetns
 
- Protected Attributes inherited from havoc_utilst
const assignstassigns
 
const havoc_utils_can_forward_propagatet is_constant
 

Detailed Description

A class that further overrides the "safe" havoc utilities, and adds support for havocing pointer_object expressions.

Definition at line 91 of file utils.h.

Constructor & Destructor Documentation

◆ havoc_assigns_targetst()

havoc_assigns_targetst::havoc_assigns_targetst ( const assignst mod,
symbol_tablet st,
message_handlert message_handler,
const irep_idt mode 
)
inline

Definition at line 94 of file utils.h.

Member Function Documentation

◆ append_havoc_code_for_expr()

void havoc_assigns_targetst::append_havoc_code_for_expr ( const source_locationt  location,
const exprt expr,
goto_programt dest 
)
virtual

Append goto instructions to havoc a single expression expr

If expr is an array index or object dereference expression, with a non-constant offset, e.g. a[i] or *(b+i) with a non-constant i, then instructions are generated to havoc the entire underlying object. Otherwise, e.g. for a[0] or *(b+i) when i is a known constant, the instructions are generated to only havoc the scalar value of expr.

Parameters
locationThe source location to annotate on the havoc instruction
exprThe expression to havoc
destThe destination goto program to append the instructions to

Reimplemented from havoc_utilst.

Definition at line 108 of file utils.cpp.

◆ append_havoc_pointer_code()

void havoc_assigns_targetst::append_havoc_pointer_code ( const source_locationt  location,
const exprt ptr_to_ptr,
goto_programt dest 
)

Definition at line 76 of file utils.cpp.

◆ append_havoc_slice_code()

void havoc_assigns_targetst::append_havoc_slice_code ( const source_locationt  location,
const exprt ptr,
const exprt size,
goto_programt dest 
)

Definition at line 54 of file utils.cpp.

Member Data Documentation

◆ cleaner

cleanert havoc_assigns_targetst::cleaner

Definition at line 124 of file utils.h.

◆ log

messaget havoc_assigns_targetst::log

Definition at line 125 of file utils.h.

◆ mode

const irep_idt& havoc_assigns_targetst::mode

Definition at line 126 of file utils.h.

◆ ns

namespacet havoc_assigns_targetst::ns

Definition at line 123 of file utils.h.


The documentation for this class was generated from the following files: