GCC 13.0.0: Compilation scenarios with OpenMP and Nested Functions in C
I'm working with a compilation behavior when trying to use OpenMP in conjunction with nested functions in C with GCC 13.0.0. The code compiles fine without OpenMP, but when I enable it, I get the following behavior: ``` behavior: ‘x’ undeclared (first use in this function) ``` Here is a simplified version of my code: ```c #include <stdio.h> #include <omp.h> void outer_function() { int x = 10; void nested_function() { printf("Value of x: %d\n", x); } #pragma omp parallel { nested_function(); } } int main() { outer_function(); return 0; } ``` I have tried moving the variable `x` to be a global variable, but that doesn’t seem appropriate for my design. I also attempted to declare `x` as `static` inside the `outer_function`, but the behavior continues. I checked the OpenMP documentation, and it mentions that any variables accessed within parallel regions should be declared appropriately, but I'm unsure how to fix this without restructuring my functions completely. Is there a way to make this work with OpenMP while keeping the nested structure, or is it a limitation of the GCC implementation? Any help would be appreciated!