Changeset 242235 in webkit

Timestamp:

Feb 28, 2019, 3:33:08 PM (6 years ago)

Author:

mark.lam@apple.com

Message:

Change CheckedArithmetic to not use std::enable_if_t.
​https://bugs.webkit.org/show_bug.cgi?id=195187
<rdar://problem/48464665>

Reviewed by Keith Miller.

Because C++11 does not like std::enable_if_t and there's a need to use this file with C++11.

• wtf/CheckedArithmetic.h:

Location:

trunk/Source/WTF

Files:

• ChangeLog (modified) (1 diff)
• wtf/CheckedArithmetic.h (modified) (4 diffs)

trunk/Source/WTF/ChangeLog

@@ +1 @@
+2019-02-28  Mark Lam  <mark.lam@apple.com>
+
+        Change CheckedArithmetic to not use std::enable_if_t.
+        https://bugs.webkit.org/show_bug.cgi?id=195187
+        <rdar://problem/48464665>
+
+        Reviewed by Keith Miller.
+
+        Because C++11 does not like std::enable_if_t and there's a need to use this file with C++11.
+
+        * wtf/CheckedArithmetic.h:
+
 2019-02-27  Simon Fraser  <simon.fraser@apple.com>
 

trunk/Source/WTF/wtf/CheckedArithmetic.h

@@ -542 +542 @@
 };
 
-template <class OverflowHandler, typename = std::enable_if_t<!std::is_scalar<OverflowHandler>::value>>
+template <class OverflowHandler, typename = typename std::enable_if<!std::is_scalar<OverflowHandler>::value>::type>
 inline constexpr bool observesOverflow() { return true; }
 
@@ -554 +554 @@
 }
 
-template <class OverflowHandler, typename U, typename V, typename R, typename = std::enable_if_t<!std::is_scalar<OverflowHandler>::value>>
+template <class OverflowHandler, typename U, typename V, typename R, typename = typename std::enable_if<!std::is_scalar<OverflowHandler>::value>::type>
 static inline bool safeAdd(U lhs, V rhs, R& result)
 {
@@ -568 +568 @@
 }
 
-template <class OverflowHandler, typename U, typename V, typename R, typename = std::enable_if_t<!std::is_scalar<OverflowHandler>::value>>
+template <class OverflowHandler, typename U, typename V, typename R, typename = typename std::enable_if<!std::is_scalar<OverflowHandler>::value>::type>
 static inline bool safeSub(U lhs, V rhs, R& result)
 {
@@ -582 +582 @@
 }
 
-template <class OverflowHandler, typename U, typename V, typename R, typename = std::enable_if_t<!std::is_scalar<OverflowHandler>::value>>
+template <class OverflowHandler, typename U, typename V, typename R, typename = typename std::enable_if<!std::is_scalar<OverflowHandler>::value>::type>
 static inline bool safeMultiply(U lhs, V rhs, R& result)
 {