id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
11239,clang++ emits lots of warnings about unused local defines,Moritz Bunkus <moritz@…>,,"When compiling anything using `BOOST_RANGE_CONCEPT_ASSERT()` cland++ emits tons of warnings about used local defines with `-Wall`.

This is a regression compared to 1.57.0.

Trivial example program:

{{{
#include <vector>
#include <boost/range/algorithm.hpp>

int
main(int, char**) {
  std::vector<int> v;
  boost::range::sort(v);
}
}}}

Compiled with:

{{{
clang++ -Wall -I$HOME/opt/boost/boost_1_58_0/include/ \
  -L$HOME/opt/boost/boost_1_58_0/lib/ -o cpp1 cpp1.cpp
}}}

Output (excerpt):

{{{
In file included from cpp1.cpp:46:
In file included from /home/mosu/opt/boost/boost_1_58_0/include/boost/range/algorithm.hpp:29:
In file included from /home/mosu/opt/boost/boost_1_58_0/include/boost/range/concepts.hpp:19:
/home/mosu/opt/boost/boost_1_58_0/include/boost/concept_check.hpp:51:7: warning: unused typedef 'boost_concept_check51' [-Wunused-local-typedef]
      BOOST_CONCEPT_ASSERT((Model));
…
313 warnings generated.
}}}

These are 313 warnings for that trivial example program above.

g++ 4.9.2 does not emit such warnings, with neither version.

clang++ 3.6.0 emits those warnings with Boost 1.58.0 but not with 1.57.0 or earlier.",Bugs,closed,To Be Determined,None,Boost 1.58.0,Regression,duplicate,,