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Code Issues Releases Wiki Activity

#1051 Detect recursion after 1M tail recursion iterations

master
Marius Kintel 2014-12-11 16:09:55 -05:00
parent df53d05bba
commit 9863aa9ab2
1 changed files with 4 additions and 0 deletions
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4
src/func.cc
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@ -36,6 +36,7 @@
#include "stl-utils.h"
#include "printutils.h"
#include "stackcheck.h"
#include "exceptions.h"
#include <boost/foreach.hpp>
#include <boost/math/special_functions/fpclassify.hpp>
@ -150,9 +151,12 @@ ValuePtr FunctionTailRecursion::evaluate(const Context *ctx, const EvalContext *
EvalContext ec(&c, call->call_arguments);
Context tmp(&c);
unsigned int counter = 0;
while (invert ^ expr->first->evaluate(&c)) {
tmp.setVariables(definition_arguments, &ec);
c.apply_variables(tmp);
if (counter++ == 1000000) throw RecursionException("function", this->name);
}
ValuePtr result = endexpr->evaluate(&c);