src/llvm-project/lldb/packages/Python/lldbsuite/test/tools/lldb-vscode/stackTrace/main.c

#include <stdio.h>
#include <unistd.h>

int recurse(int x) {
  if (x <= 1)
    return 1; // recurse end
  return recurse(x-1) + x; // recurse call
}

int main(int argc, char const *argv[]) {
  recurse(20); // recurse invocation
  return 0;
}