| // RUN: %clang_cc1 -emit-llvm-only %s | |
| // PR45410 | |
| // Ensure we mark local extern redeclarations with a different type as non-builtin. | |
| void non_builtin() { | |
| extern float exp(); | |
| exp(); // Will crash due to wrong number of arguments if this calls the builtin. | |
| } | |
| // PR45410 | |
| // We mark exp() builtin as const with -fno-math-errno (default). | |
| // We mustn't do that for extern redeclarations of builtins where the type differs. | |
| float attribute() { | |
| extern float exp(); | |
| return exp(1); | |
| } |