From: Jonathan Wakely <jwakely@redhat.com>
Date: Tue, 31 Jul 2018 14:55:36 +0000 (+0100)
Subject: Replace safe bool idiom with explicit operator bool
X-Git-Tag: basepoints/gcc-10~5011
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=77a6c969e9c39e1168748c17b7dc33154ae325d7;p=thirdparty%2Fgcc.git

Replace safe bool idiom with explicit operator bool

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

From-SVN: r263162
---

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 6298f7eab23c..b77a9f00bc9b 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -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
diff --git a/libstdc++-v3/include/ext/pointer.h b/libstdc++-v3/include/ext/pointer.h
index 318fbb11b087..ee5c30dfa64f 100644
--- a/libstdc++-v3/include/ext/pointer.h
+++ b/libstdc++-v3/include/ext/pointer.h
@@ -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