llvm-project/clang/test/SemaCXX/array-bound-merge.cpp

// RUN: %clang_cc1 -fsyntax-only -verify %s
// PR5515

extern int a[];
int a[10];
extern int b[10];
int b[];
extern int c[1];
int c[] = {1,2}; // expected-error {{excess elements in array initializer}}