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Revert "Raise RuntimeError if Kernel#binding is called from a non-Ruby frame"

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This reverts commit 343ea9967e.

This causes an assertion failure with -DRUBY_DEBUG=1 -DRGENGC_CHECK_MODE=2
This commit is contained in:
Jeremy Evans 2022-04-01 07:22:49 -07:00
parent d8352ff3ac
commit d1d48cb690
6 changed files with 72 additions and 59 deletions
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31
bootstraptest/test_yjit.rb
View file

@ -1,3 +1,34 @@
assert_equal '2022', %q{
def contrivance(hash, key)
# Expect this to compile to an `opt_aref`.
hash[key]
# The [] call above tracks that the `hash` local has a VALUE that
# is a heap pointer and the guard for the Kernel#itself call below
# doesn't check that it's a heap pointer VALUE.
#
# As you can see from the crash, the call to rb_hash_aref() can set the
# `hash` local, making eliding the heap object guard unsound.
hash.itself
end
# This is similar to ->(recv, mid) { send(recv, mid).local_variable_set(...) }.
# By composing we avoid creating new Ruby frames and so sending :binding
# captures the environment of the frame that does the missing key lookup.
# We use it to capture the environment inside of `contrivance`.
cap_then_set =
Kernel.instance_method(:send).method(:bind_call).to_proc >>
->(binding) { binding.local_variable_set(:hash, 2022) }
special_missing = Hash.new(&cap_then_set)
# Make YJIT speculate that it's a hash and generate code
# that calls rb_hash_aref().
contrivance({}, :warmup)
contrivance({}, :warmup)
contrivance(special_missing, :binding)
}
assert_equal '18374962167983112447', %q{
# regression test for incorrectly discarding 32 bits of a pointer when it
# comes to default values.

9
spec/ruby/optional/capi/binding_spec.rb
View file

@ -8,14 +8,6 @@ describe "CApiBindingSpecs" do
end
describe "Kernel#binding" do
ruby_version_is '3.2' do
it "raises when called from C" do
foo = 14
-> { @b.get_binding }.should raise_error(RuntimeError)
end
end
ruby_version_is ''...'3.2' do
it "gives the top-most Ruby binding when called from C" do
foo = 14
b = @b.get_binding
@ -25,4 +17,3 @@ describe "CApiBindingSpecs" do
end
end
end
end

5
test/ruby/test_proc.rb
View file

@ -445,11 +445,6 @@ class TestProc < Test::Unit::TestCase
assert_equal(@@line_of_source_location_test, lineno, 'Bug #2427')
end
def test_binding_error_unless_ruby_frame
define_singleton_method :binding_from_c!, method(:binding).to_proc >> ->(bndg) {bndg}
assert_raise(RuntimeError) { binding_from_c! }
end
def test_proc_lambda
assert_raise(ArgumentError) { proc }
assert_raise(ArgumentError) { assert_warn(/deprecated/) {lambda} }

54
test/ruby/test_settracefunc.rb
View file

@ -594,7 +594,7 @@ CODE
eval <<-EOF.gsub(/^.*?: /, ""), nil, 'xyzzy'
1: set_trace_func(lambda{|event, file, line, id, binding, klass|
2: events << [event, line, file, klass, id, binding&.eval('self'), binding&.eval("_local_var")] if file == 'xyzzy'
2: events << [event, line, file, klass, id, binding.eval('self'), binding.eval("_local_var")] if file == 'xyzzy'
3: })
4: 1.times{|;_local_var| _local_var = :inner
5: tap{}
@ -619,31 +619,31 @@ CODE
answer_events = [
#
[:c_return, 1, "xyzzy", TracePoint, :trace, TracePoint, nil, nil],
[:c_return, 1, "xyzzy", TracePoint, :trace, TracePoint, :outer, trace],
[:line, 4, 'xyzzy', self.class, method, self, :outer, :nothing],
[:c_call, 4, 'xyzzy', Integer, :times, 1, nil, nil],
[:c_call, 4, 'xyzzy', Integer, :times, 1, :outer, :nothing],
[:line, 4, 'xyzzy', self.class, method, self, nil, :nothing],
[:line, 5, 'xyzzy', self.class, method, self, :inner, :nothing],
[:c_return, 4, "xyzzy", Integer, :times, 1, nil, nil],
[:c_return, 4, "xyzzy", Integer, :times, 1, :outer, 1],
[:line, 7, 'xyzzy', self.class, method, self, :outer, :nothing],
[:c_call, 7, "xyzzy", Class, :inherited, Object, nil, nil],
[:c_return, 7, "xyzzy", Class, :inherited, Object, nil, nil],
[:c_call, 7, "xyzzy", Class, :const_added, Object, nil, nil],
[:c_return, 7, "xyzzy", Class, :const_added, Object, nil, nil],
[:c_call, 7, "xyzzy", Class, :inherited, Object, :outer, :nothing],
[:c_return, 7, "xyzzy", Class, :inherited, Object, :outer, nil],
[:c_call, 7, "xyzzy", Class, :const_added, Object, :outer, :nothing],
[:c_return, 7, "xyzzy", Class, :const_added, Object, :outer, nil],
[:class, 7, "xyzzy", nil, nil, xyzzy.class, nil, :nothing],
[:line, 8, "xyzzy", nil, nil, xyzzy.class, nil, :nothing],
[:line, 9, "xyzzy", nil, nil, xyzzy.class, :XYZZY_outer, :nothing],
[:c_call, 9, "xyzzy", Module, :method_added, xyzzy.class, nil, nil],
[:c_return, 9, "xyzzy", Module, :method_added, xyzzy.class, nil, nil],
[:c_call, 9, "xyzzy", Module, :method_added, xyzzy.class, :XYZZY_outer, :nothing],
[:c_return, 9, "xyzzy", Module, :method_added, xyzzy.class, :XYZZY_outer, nil],
[:line, 13, "xyzzy", nil, nil, xyzzy.class, :XYZZY_outer, :nothing],
[:c_call, 13, "xyzzy", Module, :method_added, xyzzy.class, nil, nil],
[:c_return,13, "xyzzy", Module, :method_added, xyzzy.class, nil, nil],
[:c_call, 13, "xyzzy", Module, :method_added, xyzzy.class, :XYZZY_outer, :nothing],
[:c_return,13, "xyzzy", Module, :method_added, xyzzy.class, :XYZZY_outer, nil],
[:end, 17, "xyzzy", nil, nil, xyzzy.class, :XYZZY_outer, :nothing],
[:line, 18, "xyzzy", TestSetTraceFunc, method, self, :outer, :nothing],
[:c_call, 18, "xyzzy", Class, :new, xyzzy.class, nil, nil],
[:c_call, 18, "xyzzy", BasicObject, :initialize, xyzzy, nil, nil],
[:c_return,18, "xyzzy", BasicObject, :initialize, xyzzy, nil, nil],
[:c_return,18, "xyzzy", Class, :new, xyzzy.class, nil, nil],
[:c_call, 18, "xyzzy", Class, :new, xyzzy.class, :outer, :nothing],
[:c_call, 18, "xyzzy", BasicObject, :initialize, xyzzy, :outer, :nothing],
[:c_return,18, "xyzzy", BasicObject, :initialize, xyzzy, :outer, nil],
[:c_return,18, "xyzzy", Class, :new, xyzzy.class, :outer, xyzzy],
[:line, 19, "xyzzy", TestSetTraceFunc, method, self, :outer, :nothing],
[:call, 9, "xyzzy", xyzzy.class, :foo, xyzzy, nil, :nothing],
[:line, 10, "xyzzy", xyzzy.class, :foo, xyzzy, nil, :nothing],
@ -654,19 +654,19 @@ CODE
[:return, 16, "xyzzy", xyzzy.class, :bar, xyzzy, :XYZZY_bar, xyzzy],
[:return, 12, "xyzzy", xyzzy.class, :foo, xyzzy, :XYZZY_foo, xyzzy],
[:line, 20, "xyzzy", TestSetTraceFunc, method, self, :outer, :nothing],
[:c_call, 20, "xyzzy", Kernel, :raise, self, nil, nil],
[:c_call, 20, "xyzzy", Exception, :exception, RuntimeError, nil, nil],
[:c_call, 20, "xyzzy", Exception, :initialize, raised_exc, nil, nil],
[:c_return,20, "xyzzy", Exception, :initialize, raised_exc, nil, nil],
[:c_return,20, "xyzzy", Exception, :exception, RuntimeError, nil, nil],
[:c_return,20, "xyzzy", Kernel, :raise, self, nil, nil],
[:c_call, 20, "xyzzy", Exception, :backtrace, raised_exc, nil, nil],
[:c_return,20, "xyzzy", Exception, :backtrace, raised_exc, nil, nil],
[:c_call, 20, "xyzzy", Kernel, :raise, self, :outer, :nothing],
[:c_call, 20, "xyzzy", Exception, :exception, RuntimeError, :outer, :nothing],
[:c_call, 20, "xyzzy", Exception, :initialize, raised_exc, :outer, :nothing],
[:c_return,20, "xyzzy", Exception, :initialize, raised_exc, :outer, raised_exc],
[:c_return,20, "xyzzy", Exception, :exception, RuntimeError, :outer, raised_exc],
[:c_return,20, "xyzzy", Kernel, :raise, self, :outer, nil],
[:c_call, 20, "xyzzy", Exception, :backtrace, raised_exc, :outer, :nothing],
[:c_return,20, "xyzzy", Exception, :backtrace, raised_exc, :outer, nil],
[:raise, 20, "xyzzy", TestSetTraceFunc, :trace_by_tracepoint, self, :outer, raised_exc],
[:c_call, 20, "xyzzy", Module, :===, RuntimeError, nil, nil],
[:c_return,20, "xyzzy", Module, :===, RuntimeError, nil, nil],
[:c_call, 20, "xyzzy", Module, :===, RuntimeError,:outer, :nothing],
[:c_return,20, "xyzzy", Module, :===, RuntimeError,:outer, true],
[:line, 21, "xyzzy", TestSetTraceFunc, method, self, :outer, :nothing],
[:c_call, 21, "xyzzy", TracePoint, :disable, trace, nil, nil],
[:c_call, 21, "xyzzy", TracePoint, :disable, trace, :outer, :nothing],
]
return events, answer_events
end

11
vm.c
View file

@ -1233,12 +1233,15 @@ rb_vm_make_binding(const rb_execution_context_t *ec, const rb_control_frame_t *s
if (cfp == 0 || ruby_level_cfp == 0) {
rb_raise(rb_eRuntimeError, "Can't create Binding Object on top of Fiber.");
}
if (!VM_FRAME_RUBYFRAME_P(src_cfp) &&
!VM_FRAME_RUBYFRAME_P(RUBY_VM_PREVIOUS_CONTROL_FRAME(src_cfp))) {
rb_raise(rb_eRuntimeError, "Cannot create Binding object for non-Ruby caller");
while (1) {
envval = vm_make_env_object(ec, cfp);
if (cfp == ruby_level_cfp) {
break;
}
cfp = rb_vm_get_binding_creatable_next_cfp(ec, RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp));
}
envval = vm_make_env_object(ec, cfp);
bindval = rb_binding_alloc(rb_cBinding);
GetBindingPtr(bindval, bind);
vm_bind_update_env(bindval, bind, envval);

9
vm_trace.c
View file

@ -721,14 +721,7 @@ call_trace_func(rb_event_flag_t event, VALUE proc, VALUE self, ID id, VALUE klas
argv[1] = filename;
argv[2] = INT2FIX(line);
argv[3] = id ? ID2SYM(id) : Qnil;
argv[4] = Qnil;
if (self && (filename != Qnil) &&
event != RUBY_EVENT_C_CALL &&
event != RUBY_EVENT_C_RETURN &&
(VM_FRAME_RUBYFRAME_P(ec->cfp) ||
VM_FRAME_RUBYFRAME_P(RUBY_VM_PREVIOUS_CONTROL_FRAME(ec->cfp)))) {
argv[4] = rb_binding_new();
}
argv[4] = (self && (filename != Qnil)) ? rb_binding_new() : Qnil;
argv[5] = klass ? klass : Qnil;
rb_proc_call_with_block(proc, 6, argv, Qnil);