fix #832

does no longer rely on default 0-interpretation when __GNUC__ is not defined

diff --git a/lib/lz4.h b/lib/lz4.h
index 9b3d758..b8a898e 100644 (file)
--- a/lib/lz4.h
+++ b/lib/lz4.h
@@ -665,18 +665,17 @@ union LZ4_streamDecode_u {
 #ifdef LZ4_DISABLE_DEPRECATE_WARNINGS
 #  define LZ4_DEPRECATED(message)   /* disable deprecation warnings */
 #else
-#  define LZ4_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
 #  if defined (__cplusplus) && (__cplusplus >= 201402) /* C++14 or greater */
 #    define LZ4_DEPRECATED(message) [[deprecated(message)]]
-#  elif (LZ4_GCC_VERSION >= 405) || defined(__clang__)
-#    define LZ4_DEPRECATED(message) __attribute__((deprecated(message)))
-#  elif (LZ4_GCC_VERSION >= 301)
-#    define LZ4_DEPRECATED(message) __attribute__((deprecated))
 #  elif defined(_MSC_VER)
 #    define LZ4_DEPRECATED(message) __declspec(deprecated(message))
+#  elif defined(__clang__) || (defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 5))
+#    define LZ4_DEPRECATED(message) __attribute__((deprecated(message)))
+#  elif defined(__GNUC__) && (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1)
+#    define LZ4_DEPRECATED(message) __attribute__((deprecated))
 #  else
-#    pragma message("WARNING: You need to implement LZ4_DEPRECATED for this compiler")
-#    define LZ4_DEPRECATED(message)
+#    pragma message("WARNING: LZ4_DEPRECATED needs custom implementation for this compiler")
+#    define LZ4_DEPRECATED(message)   /* disabled */
 #  endif
 #endif /* LZ4_DISABLE_DEPRECATE_WARNINGS */