src/hotspot/share/opto/parse2.cpp

@@ -1292,10 +1292,16 @@
      if (prob <= PROB_MIN)  prob_str = (prob == PROB_MIN) ? "min" : "never";
      char prob_str_buf[30];
      if (prob_str == nullptr) {
        jio_snprintf(prob_str_buf, sizeof(prob_str_buf), "%20.2f", prob);
        prob_str = prob_str_buf;
+       // The %20.2f adds many spaces to the string, to avoid some
+       // picky overflow warning as noted in 8211929.  But, 20 is the
+       // *minimum* width, not *maximum*, so it's not clear how this
+       // helps prevent overflow.  Looks like we were forced to work
+       // around a bug in gcc.  In any case, strip the blanks.
+       while (*prob_str == ' ')  ++prob_str;
      }
      C->log()->elem("branch target_bci='%d' taken='%d' not_taken='%d' cnt='%f' prob='%s'",
                     iter().get_dest(), taken, not_taken, cnt, prob_str);
    }
    return prob;