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  1. JDK
  2. JDK-8263718

unused-result warning happens at os_linux.cpp

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    • Subcomponent:
    • Resolved In Build:
      b19
    • OS:
      linux

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        Description

        I tried to build OpenJDK with g++-10.2.1_pre1-r3 on Alpine Linux 3.13.2, but I saw following warning:

        /home/jdk/github-forked/jdk/src/hotspot/os/linux/os_linux.cpp:668:9: error: ignoring return value of 'void* __builtin_alloca(long unsigned int)' declared with attribute 'warn_unused_result' [-Werror=unused-result]
          668 | alloca(((pid ^ counter++) & 7) * 128);
              | ^
        cc1plus: all warnings being treated as errors

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                Assignee:
                ysuenaga Yasumasa Suenaga
                Reporter:
                ysuenaga Yasumasa Suenaga
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