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1// RUN: %clang_cc1 -emit-llvm-only %s2 3// PR454104// Ensure we mark local extern redeclarations with a different type as non-builtin.5void non_builtin() {6 extern float exp();7 exp(); // Will crash due to wrong number of arguments if this calls the builtin.8}9 10// PR4541011// We mark exp() builtin as const with -fno-math-errno (default).12// We mustn't do that for extern redeclarations of builtins where the type differs.13float attribute() {14 extern float exp();15 return exp(1);16}17