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  1. JDK
  2. JDK-8025661

Ill-formed -Xminf and -Xmaxf options values interpreted as 0

    Details

    • Subcomponent:
      gc
    • Resolved In Build:
      b55
    • CPU:
      generic
    • OS:
      generic

      Backports

        Description

        Arguments::parse_each_vm_init_arg uses atof to parse -Xminf and -Xmaxf options values. As a result all ill-formed values parsed as 0, while some error message is expected in that case:

        jdk1.8.0/fastdebug/bin/java -Xminf=1231313131 -Xmaxfblablabla -XX:+PrintFlagsFinal -version | grep HeapFreeRatio
            uintx MaxHeapFreeRatio := 0 {product}
            uintx MinHeapFreeRatio := 0 {product}
        java version "1.8.0-ea-fastdebug"
        Java(TM) SE Runtime Environment (build 1.8.0-ea-fastdebug-b106)
        Java HotSpot(TM) 64-Bit Server VM (build 25.0-b48-fastdebug, mixed mode)

        Correct values parsed fine:
        jdk1.8.0/fastdebug/bin/java -Xminf0.3 -Xmaxf0.4 -XX:+PrintFlagsFinal -version | grep HeapFreeRatio
            uintx MaxHeapFreeRatio := 40 {product}
            uintx MinHeapFreeRatio := 30 {product}
        java version "1.8.0-ea-fastdebug"
        Java(TM) SE Runtime Environment (build 1.8.0-ea-fastdebug-b106)
        Java HotSpot(TM) 64-Bit Server VM (build 25.0-b48-fastdebug, mixed mode)

        Looks like all HS trains are affected.

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                • Assignee:
                  sjohanss Stefan Johansson
                  Reporter:
                  fzhinkin Filipp Zhinkin
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                  • Created:
                    Updated:
                    Resolved: