Re: Erratic code for float constants (BCB5)

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#7773

From: Eelke
Date: Tue, 28 Dec 2004 07:40

33 lines
2126 bytes

AlexB wrote:
> Hi all!
> 
> Maybe off topic for API-NG but I see no special group for "compilers"...
> ----------------------------------------------------------------------
> Some days ago I've run into an strange obstacle.
> BCB5 compiler from time to time generates invalid addresses for float 
> constants like this:
> 
>  Controller->Lamp[n++]=1.27*tbFace->Position;
> 
>    CPU:
>    // load tbFace->Position
>    mov edx,[ebp-0x2c]
>    mov ecx,[edx+0x450]
>    fild dword ptr [ecx+0x210]
>    // Is it "1.27" ???
>    // No, it's the address of next function in source file !!!
>    fmul qword ptr [TfrmFaceCalibr::btnSaveImageClick(const 
> System::TObject *)]
>    // Float to int
>    call CC3250MT.__ftol
>    ...
> 
> Remakeing/rebuilding inside IDE has no effect, the only way is "make -B" 
> from command line...
> 
> The project is not so big (~500 kB of src in ~100 files). This problem 
> has arisen some days ago and I had no such issue never before.
> 
> Any suggestion?
> 
> AlexB.

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