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ros-perception / openslam_gmapping

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make it compile with glibc-2.26 with an explicit cast to bool #19

Open bulwahn opened 7 years ago

bulwahn commented 7 years ago

With glibc-2.26, openslam_gmapping failed to compile with:

| [...]/gridfastslam/gfsreader.cpp: In member function 'virtual void GMapping::GFSReader::RawOdometryRecord::read(std::istream&)':
| [...]/gridfastslam/gfsreader.cpp:79:3: error: no match for 'operator==' (operand types are 'std::istream {aka std::basic_istream<char>}' and 'int')
|    assert(is);
|    ^

Hence, this commit explicitly casts to bool, so that the assert annotation compiles properly again. The issue was discovered during the maintenance of meta-ros, the OpenEmbedded layer for ROS.