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Support/SystemError: Make error_category and error_code auto-bool-conversion-safe.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120869 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer 2010-12-04 00:32:24 +00:00
parent 4958466f9f
commit da3aaffcbb
1 changed files with 12 additions and 4 deletions

16
include/llvm/Support/system_error.h

@ -708,8 +708,12 @@ public:
const error_category& category() const {return *_cat_;}
std::string message() const;
// explicit
operator bool() const {return _val_ != 0;}
typedef void (*unspecified_bool_type)();
static void unspecified_bool_true() {}
operator unspecified_bool_type() const { // true if error
return _val_ == 0 ? 0 : unspecified_bool_true;
}
};
inline error_condition make_error_condition(errc _e) {
@ -767,8 +771,12 @@ public:
std::string message() const;
// explicit
operator bool() const {return _val_ != 0;}
typedef void (*unspecified_bool_type)();
static void unspecified_bool_true() {}
operator unspecified_bool_type() const { // true if error
return _val_ == 0 ? 0 : unspecified_bool_true;
}
};
inline error_code make_error_code(errc _e) {