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Replace safe bool idiom with explicit operator bool

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* include/ext/pointer.h [__cplusplus >= 201103L]
	(_Pointer_adapter::operator bool): Add explicit conversion operator
	to replace safe bool idiom.

From-SVN: r263162
This commit is contained in:
Jonathan Wakely 2018-07-31 15:55:36 +01:00 • committed by Jonathan Wakely
parent ddf98a96d0
commit 77a6c969e9
2 changed files with 10 additions and 0 deletions
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6
libstdc++-v3/ChangeLog
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@ -1,3 +1,9 @@
2018-07-31 Jonathan Wakely <jwakely@redhat.com>
* include/ext/pointer.h [__cplusplus >= 201103L]
(_Pointer_adapter::operator bool): Add explicit conversion operator
to replace safe bool idiom.
2018-07-30 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/86734

4
libstdc++-v3/include/ext/pointer.h
View file

@ -356,6 +356,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{ return _Storage_policy::get()[__index]; }
// To allow implicit conversion to "bool", for "if (ptr)..."
#if __cplusplus >= 201103L
explicit operator bool() const { return _Storage_policy::get() != 0; }
#else
private:
typedef element_type*(_Pointer_adapter::*__unspecified_bool_type)() const;
@ -370,6 +373,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
inline bool
operator!() const
{ return (_Storage_policy::get() == 0); }
#endif
// Pointer differences
inline friend std::ptrdiff_t