maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/clang/test/CXX/expr/expr.const/p2-0x.cpp

26 lines
645 B
C++
Raw Normal View History

Update all tests other than Driver/std.cpp to use -std=c++11 rather than -std=c++0x. Patch by Ahmed Charles! llvm-svn: 141900
2011-10-14 06:29:44 +08:00
// RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s
Implement the initial part of C++0x [expr.const]p2, which specifies that the unevaluated subexpressions of &&, ||, and ? : are not considered when determining whether the expression is a constant expression. Also, turn the "used in its own initializer" warning into a runtime-behavior warning, so that it doesn't fire when a variable is used as part of an unevaluated subexpression of its own initializer. Fixes PR9999. llvm-svn: 131968
2011-05-25 00:02:01 +08:00
// PR9999
template<bool v>
class bitWidthHolding {
public:
static const
unsigned int width = (v == 0 ? 0 : bitWidthHolding<(v >> 1)>::width + 1);
};
static const int width=bitWidthHolding<255>::width;
template<bool b>
struct always_false {
static const bool value = false;
};
template<bool b>
struct and_or {
static const bool and_value = b && and_or<always_false<b>::value>::and_value;
static const bool or_value = !b || and_or<always_false<b>::value>::or_value;
};
static const bool and_value = and_or<true>::and_value;
static const bool or_value = and_or<true>::or_value;