1 files changed, 11 insertions, 0 deletions
diff --git a/src/google/protobuf/io/strtod.cc b/src/google/protobuf/io/strtod.cc
index 579de9aa..a90bb9a3 100644
--- a/src/google/protobuf/io/strtod.cc
+++ b/src/google/protobuf/io/strtod.cc
@@ -32,6 +32,7 @@
 
 #include <cstdio>
 #include <cstring>
+#include <limits>
 #include <string>
 
 #include <google/protobuf/stubs/logging.h>
@@ -109,6 +110,16 @@ double NoLocaleStrtod(const char* text, char** original_endptr) {
   return result;
 }
 
+float SafeDoubleToFloat(double value) {
+  if (value > std::numeric_limits<float>::max()) {
+    return std::numeric_limits<float>::infinity();
+  } else if (value < -std::numeric_limits<float>::max()) {
+    return -std::numeric_limits<float>::infinity();
+  } else {
+    return static_cast<float>(value);
+  }
+}
+
 }  // namespace io
 }  // namespace protobuf
 }  // namespace google