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[bug-gnulib] Re: [PATCH]: fix warning in the hash module

From: Jim Meyering
Subject: [bug-gnulib] Re: [PATCH]: fix warning in the hash module
Date: Tue, 17 May 2005 14:21:42 +0200

Yoann Vandoorselaere <address@hidden> wrote:
>> > This patch fix constness warning in the GnuLib hash module.

That patch fixes three of the four warnings produced by gcc -Wcast-qual.
The final one is here:

  void *
  hash_insert (Hash_table *table, const void *entry)

    return (void *) entry;          <<<=======

What's the gain in fixing three of them if one still remains?
That last one looks unavoidable, given my requirement that the
second parameter retain the `const' attribute.

FYI, there are similar const-removing casts in many other modules.
Look at all of the functions like memchr, memmem, strdup, etc.,
that take a const string and return a non-const pointer into that
same string.

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