[Bug 4123] New: the nested function in c code renders busybox not compilable under clang

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=4123

           Summary: the nested function in c code renders busybox not
                    compilable under clang
           Product: Busybox
           Version: 1.19.x
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: minor
          Priority: P5
         Component: Standard Compliance
        AssignedTo: unassigned at busybox.net
        ReportedBy: balicki.aleksander at gmail.com
                CC: busybox-cvs at busybox.net
   Estimated Hours: 0.0


Created attachment 3553
  --> https://bugs.busybox.net/attachment.cgi?id=3553
build.log

the nested function in:

findutils/find.c:896

crashes under clang, because of the usage of a nested function:

findutils/find.c:896:2: error: illegal storage class on function
        auto action* alloc_action(int sizeof_struct, action_fp f);
        ^
findutils/find.c:897:54: error: expected ';' at end of declaration
        action* alloc_action(int sizeof_struct, action_fp f)

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