Troubleshooting
Problem
The IBM XL C/C++ V10.1 compilers do not support variable length arrays that have private semantics in an OpenMP task construct.
Symptom
When a variable length array (VLA) has private semantics in an OpenMP task construct, the IBM XL C/C++ compilers will issue a severe error.
For example, the following code will issue a severe error:
+1 int main()
+2 {
+3 int n=10;
+4 int a[n];
+5 #pragma omp parallel num_threads(3)
+6 {
+7 #pragma omp task private(a)
+8 {
+9 a[7]=11;
+10 }
+11 }
+12 }
C: "t1.c", line 7.26: 1506-002 (S) COMPILER ERROR: Feature not implemented: private variable length array variable in omp task construct: a.
C++: "t1.c", line 7.26: 1540-2903 (S) A variable length array may not be specified in an OpenMP "private" clause.
Resolving The Problem
Ensure your code does not use these constructs.
Related Information
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Document Information
Modified date:
08 August 2018
UID
swg21313058