llvm-project/clang/test/Lexer/has_feature_rtti.cpp
Reid Kleckner 6cf4a6ba9b Turn off __has_feature(cxx_rtti) when -fno-rtti-data is present
-fno-rtti-data makes it so that vtables emitted in the current TU lack
RTTI data. This means that dynamic_cast usually fails at runtime. Users
of the existing cxx_rtti feature expect all of RTTI to work, not just
some of it.

Chromium bug for context: http://crbug.com/518191

llvm-svn: 244922
2015-08-13 17:56:49 +00:00

13 lines
350 B
C++

// RUN: %clang_cc1 -E %s -o - | FileCheck --check-prefix=CHECK-RTTI %s
// RUN: %clang_cc1 -E -fno-rtti %s -o - | FileCheck --check-prefix=CHECK-NO-RTTI %s
// RUN: %clang_cc1 -E -fno-rtti-data %s -o - | FileCheck --check-prefix=CHECK-NO-RTTI %s
#if __has_feature(cxx_rtti)
int foo();
#else
int bar();
#endif
// CHECK-RTTI: foo
// CHECK-NO-RTTI: bar