Re: [Openexr-devel] [Half] HalfTest Failure

[Michael Reinhardt]

Hi,

from my point of view, this is a know bug in the Visual Studio compiler configuration. I had the same issues some months ago.
See my mail from 25 May 2013 in order to fix this issue.

Quote from the mentioned mail:
3. Correct the export definition in halfExport.h.
As Peshala correctly stated, the PLATFORM_WINDOWS keyword is never defined in the VS project files. The other base libraries as IlmThread use another way to define their *EXPORT keyword (,which work flawlessly). I simply adjusted their definition to the half project. As a result you will get this content for halfExport.h (remove every other line of code).

#if defined(OPENEXR_DLL)
    #if defined(HALF_EXPORTS)
        #define HALF_EXPORT __declspec(dllexport)
        #define HALF_EXPORT_CONST extern __declspec(dllexport)
    #else
        #define HALF_EXPORT __declspec(dllimport)
        #define HALF_EXPORT_CONST extern __declspec(dllimport)
    #endif
#else
    #define HALF_EXPORT
    #define HALF_EXPORT_CONST extern const
#endif
Additionally, you should check the VS project files for the correct definition of OPENEXR_DLL (Half and HalfTest) and HALF_EXPORT (only Half).


FYI: The same export definition bug can be found in the Iex project. Although, this does not expose any error in the supplied test suites.

I hope this helps.
Michael


Am 11.09.2013 15:15, schrieb Julien:

Hi,
i have exactly the same problem on windows 7 64 bits.
My CPU is an Intel Xeon E5620 (i7 based).

On release i've got (it seems coding the number 3 as a half fails) :
1>  f1 = 1, f2 = 2, h1 = 0.00370026, h2 = 4, h3 = 5
1>  h1 = f1 + f2: 0.00370026
-> Crash

On Debug its worse i have:
1>  f1 = 1, f2 = 2, h1 = -8.05855e-005, h2 = 0.595703, h3 = 0.720703
-> Crash

Thanks,

Julien


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