src/share/vm/runtime/arguments.cpp

@@ -1904,25 +1904,23 @@
 #endif // INCLUDE_ALL_GCS
 
 // check if do gclog rotation
 // +UseGCLogFileRotation is a must,
 // no gc log rotation when log file not supplied or
-// NumberOfGCLogFiles is 0, or GCLogFileSize is 0
+// NumberOfGCLogFiles is 0
 void check_gclog_consistency() {
   if (UseGCLogFileRotation) {
-    if ((Arguments::gc_log_filename() == NULL) ||
-        (NumberOfGCLogFiles == 0)  ||
-        (GCLogFileSize == 0)) {
+    if ((Arguments::gc_log_filename() == NULL) || (NumberOfGCLogFiles == 0)) {
       jio_fprintf(defaultStream::output_stream(),
-                  "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>[k|K|m|M|g|G]\n"
-                  "where num_of_file > 0 and num_of_size > 0\n"
+                  "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files>\n"
+                  "where num_of_file > 0\n"
                   "GC log rotation is turned off\n");
       UseGCLogFileRotation = false;
     }
   }
 
-  if (UseGCLogFileRotation && GCLogFileSize < 8*K) {
+  if (UseGCLogFileRotation && (GCLogFileSize != 0) && (GCLogFileSize < 8*K)) {
         FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K);
         jio_fprintf(defaultStream::output_stream(),
                     "GCLogFileSize changed to minimum 8K\n");
   }
 }