1 // RUN: %clang_cc1 -triple x86_64-windows -fsyntax-only -verify %s 2 // RUN: %clang_cc1 -triple x86_64-linux -fsyntax-only -verify -emit-llvm-only -DCHECK_ALIASES %s 3 // RUN: %clang_cc1 -triple x86_64-linux -fsyntax-only -verify -emit-llvm-only %s 4 5 #if defined(_WIN32) 6 void foo() {} 7 void bar() __attribute__((ifunc("foo"))); 8 //expected-warning@-1 {{'ifunc' attribute ignored}} 9 10 #else 11 #if defined(CHECK_ALIASES) 12 void* f1_ifunc(); 13 void f1() __attribute__((ifunc("f1_ifunc"))); 14 //expected-error@-1 {{ifunc must point to a defined function}} 15 16 void* f2_a() __attribute__((ifunc("f2_b"))); 17 //expected-error@-1 {{ifunc definition is part of a cycle}} 18 void* f2_b() __attribute__((ifunc("f2_a"))); 19 //expected-error@-1 {{ifunc definition is part of a cycle}} 20 21 void* f3_a() __attribute__((ifunc("f3_b"))); 22 //expected-warning@-1 {{ifunc will always resolve to f3_c even if weak definition of f3_b is overridden}} 23 void* f3_b() __attribute__((weak, alias("f3_c"))); 24 void* f3_c() { return 0; } 25 26 void f4_ifunc() {} 27 void f4() __attribute__((ifunc("f4_ifunc"))); 28 //expected-error@-1 {{ifunc resolver function must return a pointer}} 29 30 void* f5_ifunc(int i) { return 0; } 31 void f5() __attribute__((ifunc("f5_ifunc"))); 32 //expected-error@-1 {{ifunc resolver function must have no parameters}} 33 34 #else 35 void f1a() __asm("f1"); 36 void f1a() {} 37 //expected-note@-1 {{previous definition is here}} 38 void f1() __attribute__((ifunc("f1_ifunc"))); 39 //expected-error@-1 {{definition with same mangled name as another definition}} 40 void* f1_ifunc() { return 0; } 41 42 #endif 43 #endif 44
