Add extern C blocks to wire_reader and eps_copy_input_stream.

PiperOrigin-RevId: 498262528

upb/wire/eps_copy_input_stream.h

@@ -35,6 +35,10 @@
 // Must be last.
 #include "upb/port/def.inc"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // The maximum number of bytes a single protobuf field can take up in the
 // wire format.  We only want to do one bounds check per field, so the input
 // stream guarantees that after upb_EpsCopyInputStream_IsDone() is called,
@@ -405,6 +409,10 @@ static UPB_FORCEINLINE bool upb_EpsCopyInputStream_TryParseDelimitedFast(
   return true;
 }
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #include "upb/port/undef.inc"
 
 #endif  // UPB_WIRE_EPS_COPY_INPUT_STREAM_H_

upb/wire/reader.c

@@ -27,11 +27,12 @@
 
 #include "upb/wire/reader.h"
 
-// Must be last.
-#include "upb/port/def.inc"
 #include "upb/wire/eps_copy_input_stream.h"
 #include "upb/wire/types.h"
 
+// Must be last.
+#include "upb/port/def.inc"
+
 UPB_NOINLINE _upb_WireReader_ReadLongVarintRet
 _upb_WireReader_ReadLongVarint(const char* ptr, uint64_t val) {
   _upb_WireReader_ReadLongVarintRet ret = {NULL, 0};

upb/wire/reader.h

@@ -35,6 +35,10 @@
 // Must be last.
 #include "upb/port/def.inc"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // The upb_WireReader interface is suitable for general-purpose parsing of
 // protobuf binary wire format.  It is designed to be used along with
 // upb_EpsCopyInputStream for buffering, and all parsing routines in this file
@@ -198,6 +202,10 @@ UPB_INLINE const char* upb_WireReader_SkipValue(
   }
 }
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #include "upb/port/undef.inc"
 
 #endif  // UPB_WIRE_READER_H_