| 1 | //Purpose:
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| 2 | // test if there exists filtering_stream<Mode>::sync function.
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| 3 | //
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| 4 | #include <boost/iostreams/filtering_stream.hpp>
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| 5 | template<typename Mode>
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| 6 | bool test()
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| 7 | {
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| 8 | bool dummy=false;
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| 9 | typedef
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| 10 | boost::iostreams::filtering_stream
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| 11 | < Mode
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| 12 | >
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| 13 | out;
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| 14 | auto mptr_strict=&out::strict_sync;
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| 15 | dummy|=bool(mptr_strict);
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| 16 | #if 1
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| 17 | auto mptr_sync=&out::sync;
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| 18 | dummy|=bool(mptr_sync);
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| 19 | #endif
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| 20 | return dummy;
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| 21 | }
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| 22 | int main()
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| 23 | {
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| 24 | test<boost::iostreams::input>();
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| 25 | test<boost::iostreams::output>();
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| 26 | return 0;
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| 27 | }
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| 28 | //Result:
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| 29 | /*
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| 30 | /home/evansl/dwnlds/gcc/4.8-20121028/install/bin/g++ -c -O0 -gdwarf-2 -Wall -Wstrict-overflow -ftemplate-depth-300 -Wno-unused-local-typedefs -Wno-unused-but-set-variable -std=gnu++11 -I/home/evansl/prog_dev/boost/boost-svn/ro/boost_1_54_0/sandbox/rw/non_variadic_templates -I/home/evansl/prog_dev/boost/boost-svn/ro/boost_1_54_0 -DTEMPLATE_DEPTH=300 filtering_stream.sync.cpp -MMD -o filtering_stream.sync.o
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| 31 | filtering_stream.sync.cpp: In function 'int main()':
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| 32 | filtering_stream.sync.cpp:12:21: error: 'sync' is not a member of 'out {aka boost::iostreams::filtering_stream<boost::iostreams::output>}'
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| 33 | auto mptr_sync=&out::sync;
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| 34 | ^
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| 35 | make: *** [filtering_stream.sync.o] Error 1
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| 36 | */
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