clang/test/CXX/drs/cwg1748.cpp

   1 // RUN: %clang_cc1 -std=c++98 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
   2 // RUN: %clang_cc1 -std=c++11 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
   3 // RUN: %clang_cc1 -std=c++14 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
   4 // RUN: %clang_cc1 -std=c++1z %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | FileCheck %s
   5
   6 // cwg1748: 3.7
   7
   8 // FIXME: __SIZE_TYPE__ expands to 'long long' on some targets.
   9 __extension__ typedef __SIZE_TYPE__ size_t;
  10
  11 void *operator new(size_t, void *);
  12 void *operator new[](size_t, void *);
  13
  14 struct X { X(); };
  15
  16 // The reserved placement allocation functions get inlined
  17 // even if we can't see their definitions. They do not
  18 // perform a null check.
  19
  20 // CHECK-LABEL: define {{.*}} @_Z1fPv(
  21 // CHECK-NOT: call
  22 // CHECK-NOT: icmp{{.*}} null
  23 // CHECK-NOT: br i1
  24 // CHECK: call void @_ZN1XC1Ev(
  25 // CHECK: }
  26 X *f(void *p) { return new (p) X; }
  27
  28 // CHECK-LABEL: define {{.*}} @_Z1gPv(
  29 // CHECK-NOT: call
  30 // CHECK-NOT: icmp{{.*}} null
  31 // CHECK-NOT: br i1
  32 // CHECK: call void @_ZN1XC1Ev(
  33 // CHECK: br i1
  34 // CHECK: }
  35 X *g(void *p) { return new (p) X[5]; }