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  1. JDK
  2. JDK-8252250

isnanf is obsolete

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        from https://man7.org/linux/man-pages/man3/isnanf.3.html

        "Note that these functions are obsolete. C99 defines macros
               isfinite(), isinf(), and isnan() (for all types) replacing them."

         Building JDK with musl libc gives the error:
        -------------------
        src/hotspot/share/utilities/globalDefinitions_gcc.hpp:115:39: error: 'isnanf' was not declared in this scope; did you mean 'wscanf'?
          115 | inline int g_isnan(float f) { return isnanf(f); }
        -------------------

        This is because musl libc does not define isnanf. It only declares isnan:
        https://git.musl-libc.org/cgit/musl/tree/include/math.h#n78

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            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8282939 isnanf is obsolete

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8283321 isnanf is obsolete

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8286988 isnanf is obsolete

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            relates to

            Enhancement - null JDK-8178689 Verify correctness of isnan fix

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            links to

            Commit Commit openjdk/jdk11u-dev/49f91052

            Review Review openjdk/jdk11u-dev/851

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                avoitylov Aleksei Voitylov
                alexsch Alexandr Scherbatiy
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