[Bug build/22446] New: aliasing violation calling readlink in handle_request

[msebor at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=22446

            Bug ID: 22446
           Summary: aliasing violation calling readlink in handle_request
           Product: glibc
           Version: 2.25
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: build
          Assignee: unassigned at sourceware dot org
          Reporter: msebor at gmail dot com
                CC: carlos at redhat dot com
  Target Milestone: ---

Testing a GCC 8.0 patch to detect strict aliasing violations with Glibc turns
up the following warning (the only in an x86_64-linux build):

connections.c: In function ‘handle_request’:
connections.c:1087:31: warning: passing argument 2 to restrict-qualified
parameter aliases with argument 1 [-Wrestrict]
    ssize_t n = readlink (buf, buf, sizeof (buf) - 1);
                          ~~~  ^~~

POSIX readlink restrict-qualifies both of its pointer arguments.

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