| // RUN: %clang_cc1 -triple x86_64-windows -fsyntax-only -verify %s |
| // RUN: %clang_cc1 -triple x86_64-linux -fsyntax-only -verify -emit-llvm-only -DCHECK_ALIASES %s |
| // RUN: %clang_cc1 -triple x86_64-linux -fsyntax-only -verify -emit-llvm-only %s |
| // RUN: %clang_cc1 -triple x86_64-apple-macosx -fsyntax-only -verify -emit-llvm-only %s |
| |
| #if defined(_WIN32) |
| void foo(void) {} |
| void bar(void) __attribute__((ifunc("foo"))); |
| // expected-warning@-1 {{unknown attribute 'ifunc' ignored}} |
| |
| #else |
| #if defined(CHECK_ALIASES) |
| void *f1_ifunc(void); |
| void f1(void) __attribute__((ifunc("f1_ifunc"))); |
| // expected-error@-1 {{ifunc must point to a defined function}} |
| // expected-note@-2 {{must refer to its mangled name}} |
| |
| void *f2_a(void) __attribute__((alias("f2_b"))); |
| void *f2_b(void) __attribute__((ifunc("f2_a"))); |
| // expected-error@-1 {{ifunc definition is part of a cycle}} |
| |
| void *f3_a(void) __attribute__((ifunc("f3_b"))); |
| // expected-warning@-1 {{ifunc will always resolve to f3_c even if weak definition of f3_b is overridden}} |
| void *f3_b(void) __attribute__((weak, alias("f3_c"))); |
| void *f3_c(void) { return 0; } |
| |
| void f4_ifunc(void) {} |
| void f4(void) __attribute__((ifunc("f4_ifunc"))); |
| // expected-error@-1 {{ifunc resolver function must return a pointer}} |
| |
| int f5_resolver_gvar; |
| void f5(void) __attribute__((ifunc("f5_resolver_gvar"))); |
| // expected-error@-1 {{ifunc must point to a defined function}} |
| |
| void *f6_resolver_resolver(void) { return 0; } |
| void *f6_resolver(void) __attribute__((ifunc("f6_resolver_resolver"))); |
| void f6(void) __attribute__((ifunc("f6_resolver"))); |
| // expected-error@-1 {{ifunc must point to a defined function}} |
| |
| #elif defined(__APPLE__) |
| |
| // NOTE: aliases are not supported on Darwin, so the above tests are not relevant. |
| |
| #define STR2(X) #X |
| #define STR(X) STR2(X) |
| #define PREFIX STR(__USER_LABEL_PREFIX__) |
| |
| void f1a(void) __asm("f1"); |
| void f1a(void) {} |
| // expected-note@-1 {{previous definition is here}} |
| void f1(void) __attribute__((ifunc(PREFIX "f1_ifunc"))) __asm("f1"); |
| // expected-error@-1 {{definition with same mangled name '<U+0001>f1' as another definition}} |
| void *f1_ifunc(void) { return 0; } |
| |
| void *f6_ifunc(int i); |
| void __attribute__((ifunc(PREFIX "f6_ifunc"))) f6(void) {} |
| // expected-error@-1 {{definition 'f6' cannot also be an ifunc}} |
| |
| #else |
| void f1a(void) __asm("f1"); |
| void f1a(void) {} |
| // expected-note@-1 {{previous definition is here}} |
| void f1(void) __attribute__((ifunc("f1_ifunc"))); |
| // expected-error@-1 {{definition with same mangled name 'f1' as another definition}} |
| void *f1_ifunc(void) { return 0; } |
| |
| void *f6_ifunc(int i); |
| void __attribute__((ifunc("f6_ifunc"))) f6(void) {} |
| // expected-error@-1 {{definition 'f6' cannot also be an ifunc}} |
| |
| #endif |
| #endif |