gcc-4.9/gcc/testsuite/g++.dg/ext/builtin3.C


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// Verify that declaring builtin in namespace std doesn't give us
// declaration in global namespace

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

namespace std {
extern "C" int printf(char*, ...); // { dg-message "std::printf" }
}

void foo() {
  printf("abc"); 		// { dg-error "not declared" }
  // { dg-message "suggested alternative" "suggested alternative" { target *-*-* } 12 }
}