gcc-4.9/gcc/testsuite/g++.dg/ext/builtin4.C


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// Verify that builtin is used when declared in global namespace

// { dg-do compile }
// { dg-options "-Wall" }

extern "C" int printf(const char*,...);

void foo() {
  printf("%d"); 		// { dg-warning "expects a matching" }
}