H
Howard Yeh
Hi,
My ruby runtime is "ruby 1.9.1p0 (2009-01-30 revision 21907) [i686-
linux]"
Kernel eval works for these cases:
puts "2 times"
1.times do
a = 1
p Kernel.eval("local_variables",binding)
end
puts "while"
while true
a = 1
p Kernel.eval("local_variables",binding)
break
end
puts "lambda"
lambda {
a=1
p Kernel.eval("local_variables",binding)
}.call
But I get a segfault with
for i in 1..100
a = 1
p Kernel.eval("local_variables",binding)
break
end
But you can try,
for i in 1..100
a = 1
r = Kernel.eval("local_variables",binding)
p r.length # => 4, but should be 3
p r[1..-1] # => [:i,:a,:r]
p r.first.class # => Symbol
p r.first.object_id # => 4087
p r.first # segfault
break
end
And we see that there's an extraneous variable reported by evaluating
local_variables. The first element of the result seems an invalid
pointer?
for i in 1..100
p Kernel.eval("local_variables") # this works
break
end
My ruby runtime is "ruby 1.9.1p0 (2009-01-30 revision 21907) [i686-
linux]"
Kernel eval works for these cases:
puts "2 times"
1.times do
a = 1
p Kernel.eval("local_variables",binding)
end
puts "while"
while true
a = 1
p Kernel.eval("local_variables",binding)
break
end
puts "lambda"
lambda {
a=1
p Kernel.eval("local_variables",binding)
}.call
But I get a segfault with
for i in 1..100
a = 1
p Kernel.eval("local_variables",binding)
break
end
But you can try,
for i in 1..100
a = 1
r = Kernel.eval("local_variables",binding)
p r.length # => 4, but should be 3
p r[1..-1] # => [:i,:a,:r]
p r.first.class # => Symbol
p r.first.object_id # => 4087
p r.first # segfault
break
end
And we see that there's an extraneous variable reported by evaluating
local_variables. The first element of the result seems an invalid
pointer?
for i in 1..100
p Kernel.eval("local_variables") # this works
break
end