clang/test/CodeGen/attr-ifunc.cpp

   1 // RUN: %clang_cc1 -triple x86_64-linux -fsyntax-only -verify -emit-llvm-only %s
   2 // RUN: not %clang_cc1 -triple x86_64-linux -emit-llvm-only -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s
   3
   4 void *f1_ifunc(void) { return nullptr; }
   5 void f1(void) __attribute__((ifunc("f1_ifunc")));
   6 // expected-error@-1 {{ifunc must point to a defined function}}
   7 // expected-note@-2 {{must refer to its mangled name}}
   8 // expected-note@-3 {{function by that name is mangled as}}
   9 // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:30-[[@LINE-4]]:47}:"ifunc(\"_Z8f1_ifuncv\")"
  10
  11 void *f6_resolver_resolver(void) { return 0; }
  12 void *f6_resolver(void) __attribute__((ifunc("f6_resolver_resolver")));
  13 // expected-error@-1 {{ifunc must point to a defined function}}
  14 // expected-note@-2 {{must refer to its mangled name}}
  15 // expected-note@-3 {{function by that name is mangled as}}
  16 // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:40-[[@LINE-4]]:69}:"ifunc(\"_Z20f6_resolver_resolverv\")"
  17 void f6(void) __attribute__((ifunc("f6_resolver")));
  18 // expected-error@-1 {{ifunc must point to a defined function}}
  19 // expected-note@-2 {{must refer to its mangled name}}
  20 // expected-note@-3 {{function by that name is mangled as}}
  21 // CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:30-[[@LINE-4]]:50}:"ifunc(\"_Z11f6_resolverv\")"
  22
  23 __attribute__((unused, ifunc("resolver"), deprecated("hahahaha, isn't C great?")))
  24 void func();
  25 // expected-error@-2 {{ifunc must point to a defined function}}
  26 // expected-note@-3 {{must refer to its mangled name}}
  27