答复: exception using QL_Fail/QL_Require

Posted by 杨 斯涵 on Dec 15, 2016; 5:45am
URL: http://quantlib.414.s1.nabble.com/exception-using-QL-Fail-QL-Require-tp17920p17923.html

Hi Peter, 

Thanks for your clarification.  I understand how it works now. 

In example folder i saw following code, which shows me how to use QL_FAIL properly.  

try{..

    } catch (QuantLib::Error e) {

        std::cout << "terminated with a ql exception: " << e.what()

                  << std::endl;

        return 1;

    } catch (std::exception e) {

        std::cout << "terminated with a general exception: " << e.what()

                  << std::endl;

        return 1;

    }

Regards,

Hans

---

发件人: Peter Caspers <[hidden email]>
发送时间: 2016年12月15日 1:17
收件人: 杨 斯涵
抄送: [hidden email]
主题: Re: [Quantlib-users] exception using QL_Fail/QL_Require

 

Hi Hans,

QL_FAIL and QL_REQUIRE and the like throw an QuantLib::Error which extends std::exception. So what you see is perfectly expected, it is just the result from an uncaught exception. To see the error message you have to catch the exception and output it’s what()-result to std::clog or the like.

Kind Regards

Peter

On 14 Dec 2016, at 10:59, 杨 斯涵 <[hidden email]> wrote:

Dear all, 

i have started a new project which depends on Quantlib and i have successfully built it (in fact i currently only use QL error macros, i.e QL_FAIL)

However whenever the compiler goes to QL_FAIL line,  it gives  exception message and stopped working:

First-chance exception at 0x7503b727 in project.exe: Microsoft C++ exception: QuantLib::Error at memory location 0x0041f424..

Unhandled exception at 0x771f15ee in project.exe: Microsoft C++ exception: QuantLib::Error at memory location 0x0041f424.

my code is very simple and i use QL_FAIL like:

if(!file.is_open())

{

     QL_FAIL(" the file does not exist");

}

I tried QL_Require it gives same error.

I see ERROR macro works fine in Quantlib but cant figure out what goes wrong in my project. Could someone pls give kindly some advise?

Thanks in advance,

Hans

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