Version 4.1.0.23 (cherry-pick)

src/base/platform/platform-posix.cc

Index: src/base/platform/platform-posix.cc
diff --git a/src/base/platform/platform-posix.cc b/src/base/platform/platform-posix.cc
index 64aed2b8d1f2d0c3d3c86ef86cfd6d8fccd573e9..2cb3bbefd2cd219e54c2a71c350ca6eaba7c5a2c 100644
--- a/src/base/platform/platform-posix.cc
+++ b/src/base/platform/platform-posix.cc
@@ -260,6 +260,8 @@ int OS::GetCurrentThreadId() {
   return static_cast<int>(syscall(__NR_gettid));
 #elif V8_OS_ANDROID
   return static_cast<int>(gettid());
+#elif V8_OS_SOLARIS
+  return static_cast<int>(pthread_self());
 #else
   return static_cast<int>(reinterpret_cast<intptr_t>(pthread_self()));
 #endif