Ruby » Ruby master

Experimentally recommit of r38041: specify smaller max length

• vm_dump.c (rb_vm_bugreport): get rid of calling methods in sigsegv
  handler. based on a patch by charliesome (Charlie Somerville)
  [ruby-core:49573] [Bug #7402]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38329 b2dd03c8-39d4-4d8f-98ff-823fe69b080e