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Merged
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Mar 15, 2017
Merged

Tag exceptional return as output #578

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28 changes: 28 additions & 0 deletions src/java_bytecode/java_entry_point.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@ Author: Daniel Kroening, kroening@kroening.com
#include <ansi-c/string_constant.h>

#include <goto-programs/goto_functions.h>
#include <goto-programs/remove_exceptions.h>

#include "java_entry_point.h"
#include "java_object_factory.h"
Expand Down Expand Up @@ -325,6 +326,24 @@ void java_record_outputs(
init_code.move_to_operands(output);
}
}

// record exceptional return variable as output
codet output(ID_output);
output.operands().resize(2);

assert(symbol_table.has_symbol(id2string(function.name)+EXC_SUFFIX));

// retrieve the exception variable
const symbolt exc_symbol=symbol_table.lookup(
id2string(function.name)+EXC_SUFFIX);

output.op0()=address_of_exprt(
index_exprt(string_constantt(exc_symbol.base_name),
from_integer(0, index_type())));
output.op1()=exc_symbol.symbol_expr();
output.add_source_location()=function.location;

init_code.move_to_operands(output);
}

main_function_resultt get_main_symbol(
Expand Down Expand Up @@ -591,6 +610,15 @@ bool java_entry_point(
call_main.lhs()=return_symbol.symbol_expr();
}

// add the exceptional return value
auxiliary_symbolt exc_symbol;
exc_symbol.mode=ID_C;
exc_symbol.is_static_lifetime=false;
exc_symbol.name=id2string(symbol.name)+EXC_SUFFIX;
exc_symbol.base_name=id2string(symbol.name)+EXC_SUFFIX;
exc_symbol.type=typet(ID_pointer, empty_typet());
symbol_table.add(exc_symbol);

exprt::operandst main_arguments=
java_build_arguments(
symbol,
Expand Down