llvm-project/llvm/test/CFrontend/2004-11-27-InvalidConstantExpr.c

// RUN: %llvmgcc %s -S -o - | not grep 'foo\* sub'
// This should not produce a subtrace constantexpr of a pointer
struct foo {
  int Y;
  char X[100];
} F;

int test(char *Y) {
   return Y - F.X;
}