Updated by HfCloud (Xiangyu Shi) over 5 years ago
On windows, start an IRB of a 64-bits ruby, enter these code: ~~~ (1<<29).equal?(1<<29) #=>true (1<<30).equal?(1<<30) #=>false ~~~ So, it is that FIXNUM of the 64-bits ruby is a 32-bits data? But my friend try these code on linux platform and all got true(it means FIXNUM is 64bits) Then I opened ruby/ruby.h and found this: ~~~ ruby #define RUBY_FIXNUM_MAX (LONG_MAX>>1) ~~~ The LONG_MAX of my compiler(msvc140, vs2017) is 2147483647, and the ruby which is installed by ruby-installer also have the same problem.