bearded/perftools.rb — comment on commit 824f001252be9e2d005c2cf9f3ebb77fe3c39394
File: ext/perftools.c line 126
By bearded:

Yes, you are right. It break 1.9.1 support :(

```
ruby-1.9.1-p431 :001 > require 'rubygems'
=> true
ruby-1.9.1-p431 :002 > require 'perftools'
=> true
ruby-1.9.1-p431 :003 > PerfTools::CpuProfiler.start("/tmp/add_numbers_profile") do
ruby-1.9.1-p431 :004 > 5_000_000.times{ 1+2+3+4+5 }
ruby-1.9.1-p431 :005?> end
dyld: lazy symbol binding failed: Symbol not found: _RTYPEDDATA_DATA
Referenced from: /usr/local/rvm/gems/ruby-1.9.1-p431/gems/perftools.rb-0.5.6/lib/perftools.bundle
Expected in: flat namespace

dyld: Symbol not found: _RTYPEDDATA_DATA
Referenced from: /usr/local/rvm/gems/ruby-1.9.1-p431/gems/perftools.rb-0.5.6/lib/perftools.bundle
Expected in: flat namespace

Trace/BPT trap: 5
```