Avoid strerror_r portability issues

runtime/platform/utils.h

Index: runtime/platform/utils.h
diff --git a/runtime/platform/utils.h b/runtime/platform/utils.h
index 54ebf4dd410638cda6854a2d27106648e78fd5fe..faa4ec9e5dad980c4e259f2d7bfe61cfda8b1598 100644
--- a/runtime/platform/utils.h
+++ b/runtime/platform/utils.h
@@ -214,6 +214,22 @@ class Utils {
     return true;
 #endif
   }
+
+#if !defined(TARGET_OS_WINDOWS)

[Ivan Posva, 2015/11/18 05:00:49]

A better way to solve this would be to move the implementation into the platform
specific utils_xyz.cc file.

+  static char* StrError(int err, char* buffer, size_t bufsize) {
+#if !defined(__GLIBC__) ||                                              \
+  ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE)
+    // Use the standard version
+    if (strerror_r(err, buffer, bufsize) != 0) {
+      snprintf(buffer, bufsize, "%s", "strerror_r failed");
+    }
+    return buffer;
+#else
+    // Use the gnu specific version
+    return strerror_r(err, buffer, bufsize);
+#endif
+  }
+#endif
 };
 
 }  // namespace dart