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A.27 Use of C99 Variable Length Arrays

Visual Studio 2010

The following example demonstrates how to use C99 Variable Length Arrays (VLAs) in a firstprivate directive (Section 2.7.2.2 on page 26).

Note
Variable length arrays are not currently supported in Visual C++.

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void f(int m, int C[m][m])
{
    double v1[m];
    ...
    #pragma omp parallel firstprivate(C, v1)
    ...
}

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FAQ

alloca

It's a poor workaround for a 12 year old standard. It's embarrassing that Visual Studio can't compile git largely because of the c99isms in the code. $0$0 $0 $0Instead of using filthy pragmas, it's better to use _alloca or _malloca which are available from malloc.h.$0 $0$0 $0 $0(Edit: What's up with the $0's in my post when I put in carriage returns?)$0

History

10/3/2011
ehiggs

10/3/2011
ehiggs

Poor workaround

$0This is a rather poor workaround for a standard that has been around, what, 12 years already?$0

History

6/28/2011
CyberSkull