Re: [Boost-users] 'class' : missing tag name - compilation errors in two boost headers (shared_ptr and is_function_ptr_tester.hpp) in my project

Subject: Re: [Boost-users] 'class' : missing tag name - compilation errors in two boost headers (shared_ptr and is_function_ptr_tester.hpp) in my project
From: BKnoth (bknoth_at_[hidden])
Date: 2009-10-26 18:02:22

You are right! (In my defense, someone else defined that macro, and the 
one-letter name always bothered me but I couldn't say why).

Thanks for spotting that so fast.

- Bruce

On 10/26/2009 2:32 PM, Peter Dimov wrote:
> BKnoth wrote:
>> I'm stuck on basic compilation issues in boost files that get included
>> in my source code. The errors turn up in boost headers.
>>
>> Any help is appreciated! Thanks.
>>
>> I'm using Boost 1.40.0
>> MSVC Version 2008 - V 9.0.30729.1 SP
>>
>>
>> In both shared_ptr.hpp and is_function_ptr_tester.hpp I get the same
>> compilation error:
>>
>> MSVC error: error C2332: 'class' : missing tag name
>>
>>
>> Here are the specific lines from the two files (I inserted a "Error
>> Here!!! comment on the offending lines):
>>
>> ----------------
>> in shared_ptr.hpp (line 146):
>>
>> #if !defined( BOOST_NO_SFINAE ) && !defined(
>> BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION ) && !defined(
>> BOOST_NO_AUTO_PTR )
>> // rvalue auto_ptr support based on a technique by Dave Abrahams
>>
>> template< class T, class R > struct sp_enable_if_auto_ptr // Error
>> Here!!! {
>> };
>>
>> ----------------
>> in is_function_ptr_tester.hpp (line 37):
>>
>> #if !defined(BOOST_TT_PREPROCESSING_MODE)
>> // pre-processed code, don't edit, try GNU cpp with
>> // cpp -I../../../ -DBOOST_TT_PREPROCESSING_MODE -x c++ -P filename
>>
>> template <class R > // Error Here!!!
>> yes_type is_function_ptr_tester(R (*)());
>
> You have a macro called 'R'.