llvm/clang/test/Sema/decl-type-merging.c

// RUN: %clang_cc1 -fsyntax-only -std=c99 -verify -pedantic %s

int x[10];
int x[] = {1,2,3};
int testx[(sizeof(x) == sizeof(int) * 10) ? 1 : -1];

int (*a)(int (*x)[10], int (*y)[]);
int (*a)(int (*x)[], int (*y)[5]);
void b(void) {
  int x[10], y[5];
  a(&x, &y);
  a(&y, &y); // expected-warning {{incompatible pointer}}
  a(&x, &x); // expected-warning {{incompatible pointer}}
}