On Jun 17, 2013 6:21 AM, "Brian Sidebotham" <[email protected]> wrote: > > On 17 June 2013 11:59, Dick Hollenbeck <[email protected]> wrote: >> >> >> On Jun 17, 2013 5:02 AM, "Milan Horák" <[email protected]> wrote: >> > >> > Hello, >> > >> > I am getting: >> > >> > g++ -Wall -O2 -I /g/boost_1_53_0 test_polygon_diff.cpp >> > >> > test_polygon_diff.cpp: In function ‘void dumpPolySet(const KI_POLYGON_SET&)’: >> > test_polygon_diff.cpp:84:60: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘std::vector<boost::polygon::polygon_data<int> >::size_type {aka long unsigned int}’ [-Wformat] >> > test_polygon_diff.cpp:88:71: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘std::size_t {aka long unsigned int}’ [-Wformat] >> > >> > Am I doing something wrong? >> >> No. >> >> size_t is 64 bits on a 64 bit platform while int on that same platform is 32 bits even though it's a 64 bit program. >> >> This is why I don't use size_t by choice. But for function return values like this %zd works well. >> >> The z modifier is designed for use with size_t. >> >> > Ah nice, I didn't know about the %z formatter.
Modifier, so its %zd not %z. Or you can cast the argument down to 32 bits since 2 or 4 billion is usually enough of stuff.
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