1 // RUN: %clang_cc1 -triple x86_64-linux -verify -emit-llvm-only -DERR %s 2 // RUN: not %clang_cc1 -triple x86_64-linux -emit-llvm-only -fdiagnostics-parseable-fixits -DERR %s 2>&1 | FileCheck %s --check-prefix=FIXIT 3 // RUN: %clang_cc1 -triple x86_64-linux -emit-llvm %s -o - | FileCheck %s 4 5 #ifdef ERR 6 void *f1_ifunc(void) { return nullptr; } 7 void f1(void) __attribute__((alias("f1_ifunc"))); 8 // expected-error@-1 {{alias must point to a defined variable or function}} 9 // expected-note@-2 {{must refer to its mangled name}} 10 // expected-note@-3 {{function by that name is mangled as}} 11 // FIXIT: fix-it:"{{.*}}":{[[@LINE-4]]:30-[[@LINE-4]]:47}:"alias(\"_Z8f1_ifuncv\")" 12 13 void *f6_resolver_resolver(void) { return 0; } 14 void *f6_resolver(void) __attribute__((alias("f6_resolver_resolver"))); 15 // expected-error@-1 {{alias must point to a defined variable or function}} 16 // expected-note@-2 {{must refer to its mangled name}} 17 // expected-note@-3 {{function by that name is mangled as}} 18 // FIXIT: fix-it:"{{.*}}":{[[@LINE-4]]:40-[[@LINE-4]]:69}:"alias(\"_Z20f6_resolver_resolverv\")" 19 void f6(void) __attribute__((alias("f6_resolver"))); 20 // expected-error@-1 {{alias must point to a defined variable or function}} 21 // expected-note@-2 {{must refer to its mangled name}} 22 // expected-note@-3 {{function by that name is mangled as}} 23 // FIXIT: fix-it:"{{.*}}":{[[@LINE-4]]:30-[[@LINE-4]]:50}:"alias(\"_Z11f6_resolverv\")" 24 25 __attribute__((unused, alias("resolver"), deprecated("hahahaha, isn't C great?"))) 26 void func(); 27 // expected-error@-2 {{alias must point to a defined variable or function}} 28 // expected-note@-3 {{must refer to its mangled name}} 29 30 void *operator new(unsigned long) __attribute__((alias("A"))); // expected-error {{alias must point to a defined variable or function}} \ 31 // expected-note {{the function or variable specified in an alias must refer to its mangled name}} 32 #endif 33 34 // CHECK: @_ZN4libc4log2Ed ={{.*}} alias double (double), ptr @log2 35 // CHECK: define{{.*}} @log2( 36 namespace libc { double log2(double x); } 37 extern "C" double log2(double); 38 namespace std { using ::log2; } 39 using std::log2; 40 41 namespace libc { 42 decltype(libc::log2) __log2_impl__ __asm__("log2"); 43 decltype(libc::log2) log2 [[gnu::alias("log2")]]; 44 double __log2_impl__(double x) { return x; } 45 } 46