1 files changed, 48 insertions, 6 deletions

diff --git a/deps/v8/third_party/inspector_protocol/lib/Maybe_h.template b/deps/v8/third_party/inspector_protocol/lib/Maybe_h.template
index 71593acd0e..5af6960a7b 100644
--- a/deps/v8/third_party/inspector_protocol/lib/Maybe_h.template
+++ b/deps/v8/third_party/inspector_protocol/lib/Maybe_h.template
@@ -5,6 +5,41 @@
 #ifndef {{"_".join(config.protocol.namespace)}}_Maybe_h
 #define {{"_".join(config.protocol.namespace)}}_Maybe_h
 
+// This macro allows to test for the version of the GNU C++ compiler.
+// Note that this also applies to compilers that masquerade as GCC,
+// for example clang and the Intel C++ compiler for Linux.
+// Use like:
+//  #if IP_GNUC_PREREQ(4, 3, 1)
+//   ...
+//  #endif
+#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__)
+#define IP_GNUC_PREREQ(major, minor, patchlevel)                      \
+  ((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= \
+   ((major)*10000 + (minor)*100 + (patchlevel)))
+#elif defined(__GNUC__) && defined(__GNUC_MINOR__)
+#define IP_GNUC_PREREQ(major, minor, patchlevel) \
+  ((__GNUC__ * 10000 + __GNUC_MINOR__ * 100) >=  \
+   ((major)*10000 + (minor)*100 + (patchlevel)))
+#else
+#define IP_GNUC_PREREQ(major, minor, patchlevel) 0
+#endif
+
+#if defined(__mips64)
+#define IP_TARGET_ARCH_MIPS64 1
+#elif defined(__MIPSEB__) || defined(__MIPSEL__)
+#define IP_TARGET_ARCH_MIPS 1
+#endif
+
+// Allowing the use of noexcept by removing the keyword on older compilers that
+// do not support adding noexcept to default members.
+#if ((IP_GNUC_PREREQ(4, 9, 0) && !defined(IP_TARGET_ARCH_MIPS) && \
+      !defined(IP_TARGET_ARCH_MIPS64)) ||                         \
+     (defined(__clang__) && __cplusplus > 201300L))
+#define IP_NOEXCEPT noexcept
+#else
+#define IP_NOEXCEPT
+#endif
+
 //#include "Forward.h"
 
 {% for namespace in config.protocol.namespace %}
@@ -16,7 +51,7 @@ class Maybe {
 public:
     Maybe() : m_value() { }
     Maybe(std::unique_ptr<T> value) : m_value(std::move(value)) { }
-    Maybe(Maybe&& other) : m_value(std::move(other.m_value)) { }
+    Maybe(Maybe&& other) IP_NOEXCEPT : m_value(std::move(other.m_value)) {}
     void operator=(std::unique_ptr<T> value) { m_value = std::move(value); }
     T* fromJust() const { DCHECK(m_value); return m_value.get(); }
     T* fromMaybe(T* defaultValue) const { return m_value ? m_value.get() : defaultValue; }
@@ -31,7 +66,9 @@ class MaybeBase {
 public:
     MaybeBase() : m_isJust(false) { }
     MaybeBase(T value) : m_isJust(true), m_value(value) { }
-    MaybeBase(MaybeBase&& other) : m_isJust(other.m_isJust), m_value(std::move(other.m_value)) { }
+    MaybeBase(MaybeBase&& other) IP_NOEXCEPT
+        : m_isJust(other.m_isJust),
+          m_value(std::move(other.m_value)) {}
     void operator=(T value) { m_value = value; m_isJust = true; }
     T fromJust() const { DCHECK(m_isJust); return m_value; }
     T fromMaybe(const T& defaultValue) const { return m_isJust ? m_value : defaultValue; }
@@ -48,7 +85,7 @@ class Maybe<bool> : public MaybeBase<bool> {
 public:
     Maybe() { }
     Maybe(bool value) : MaybeBase(value) { }
-    Maybe(Maybe&& other) : MaybeBase(std::move(other)) { }
+    Maybe(Maybe&& other) IP_NOEXCEPT : MaybeBase(std::move(other)) {}
     using MaybeBase::operator=;
 };
 
@@ -57,7 +94,7 @@ class Maybe<int> : public MaybeBase<int> {
 public:
     Maybe() { }
     Maybe(int value) : MaybeBase(value) { }
-    Maybe(Maybe&& other) : MaybeBase(std::move(other)) { }
+    Maybe(Maybe&& other) IP_NOEXCEPT : MaybeBase(std::move(other)) {}
     using MaybeBase::operator=;
 };
 
@@ -66,7 +103,7 @@ class Maybe<double> : public MaybeBase<double> {
 public:
     Maybe() { }
     Maybe(double value) : MaybeBase(value) { }
-    Maybe(Maybe&& other) : MaybeBase(std::move(other)) { }
+    Maybe(Maybe&& other) IP_NOEXCEPT : MaybeBase(std::move(other)) {}
     using MaybeBase::operator=;
 };
 
@@ -75,7 +112,7 @@ class Maybe<String> : public MaybeBase<String> {
 public:
     Maybe() { }
     Maybe(const String& value) : MaybeBase(value) { }
-    Maybe(Maybe&& other) : MaybeBase(std::move(other)) { }
+    Maybe(Maybe&& other) IP_NOEXCEPT : MaybeBase(std::move(other)) {}
     using MaybeBase::operator=;
 };
 
@@ -83,4 +120,9 @@ public:
 } // namespace {{namespace}}
 {% endfor %}
 
+#undef IP_GNUC_PREREQ
+#undef IP_TARGET_ARCH_MIPS64
+#undef IP_TARGET_ARCH_MIPS
+#undef IP_NOEXCEPT
+
 #endif // !defined({{"_".join(config.protocol.namespace)}}_Maybe_h)