Re: [Boost-users] Compilation problem with date_time and iostream gzip (and bzip2) filters

From: Jonathan Turkanis (technews_at_[hidden])
Date: 2005-08-29 15:21:10

tonton wrote:
>> Jonathan Turkanis wrote:
>>
>>> This appears to be the GCC 4.0 + SFINAE + anonymous enum problem
>>> discussed in this thread:
>>> http://lists.boost.org/Archives/boost/2005/08/91958.php. I'd guess
>>> that Date_Time is using anonymous enum (directly or indirectly) and
>>> it's interfering with a SFINAE'd operator in Iostreams, or vice
>>> versa. Even if I can fix the interaction between Date_Time and
>>> Iostreams, it may still be a problem when one of the two libraries
>>> is used with certain non-Boost libraries.
>>
>> OK. I've seen that this was a problem with anonymous enums, but I
>> haven't found the exact reason.
>>
>>> I'll work on fixing it. In the mean time, it would be helpful if
>>> you could name the several anonymous enums defined in Iostreams and
>>> report back. E.g., at line 148 of
>>> boost/iostreams/filter/aggregate.hpp, change
>>>
>>
>> There is more files with anonymous enums in iostream.
>> a quick grep gives this:
>> $ rgrep "enum {"  boost/iostreams/*
>> boost/iostreams/code_converter.hpp:    enum {
>> boost/iostreams/detail/streambuf/indirect_streambuf.hpp:    enum {
>> boost/iostreams/filter/line.hpp:    enum {
>> boost/iostreams/filter/symmetric.hpp:    enum {
>> boost/iostreams/filter/gzip.hpp:    enum {
>> boost/iostreams/filter/gzip.hpp:    enum {
>> boost/iostreams/filter/aggregate.hpp:    enum {
>>
>> I changed them, and the example in my first post compiles, with both
>> gzip and bzip2 filters.
>> Patch attached.

Great! Thanks for the patch. The fix will appear in 1.33.1

>> Thanks for the quick response

>>> Jonathan