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https://github.com/epiqc/ScaffCC
05 April 2024, 19:04:42 UTC
Revision 067cc59bd7a234226b81962ea78260b95061620b authored by ah744 on 01 February 2017, 21:14:46 UTC, committed by ah744 on 01 February 2017, 21:14:46 UTC 
Afree() Implemetation Complete
1 parent 801b6f9
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Tip revision: 067cc59bd7a234226b81962ea78260b95061620b authored by ah744 on 01 February 2017, 21:14:46 UTC
Afree() Implemetation Complete
Tip revision: 067cc59
dynamic-cast-always-null.cpp 
// RUN: %clang_cc1 -I%S %s -triple x86_64-apple-darwin10 -emit-llvm -fcxx-exceptions -fexceptions -std=c++11 -o - | FileCheck %s
struct A { virtual ~A(); };
struct B final : A { };
struct C { virtual ~C(); int c; };

// CHECK: @_Z1fP1B
C *f(B* b) {
  // CHECK-NOT: call i8* @__dynamic_cast
  // CHECK: ret %struct.C* null
  return dynamic_cast<C*>(b);
}

// CHECK: @_Z1fR1B
C &f(B& b) {
  // CHECK-NOT: call i8* @__dynamic_cast
  // CHECK: call void @__cxa_bad_cast() noreturn
  // CHECK: ret %struct.C* undef
  return dynamic_cast<C&>(b);
}
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