mostly fix rb_iseq_load

This allows reporters commenters of [Feature #8543] to load
instruction sequences directly.  Some test cases are still failing
but documented in test/-ext-/iseq_load/test_iseq_load.rb.

* compile.c (rb_iseq_build_from_exception): entry->sp is unsigned
  (iseq_build_callinfo_from_hash): account for kw_arg
  (iseq_build_from_ary_body): update for r35459
  (CHECK_STRING, CHECK_INTEGER): remove unused checks
  (int_param): new function for checking new `params' hash
  (iseq_build_kw): new function for loading rb_iseq_param_keyword
  (rb_iseq_build_from_ary): account for `misc' entry and general
   structure changes
  [Feature #8543]
* iseq.c (CHECK_HASH): new macro (for `misc' and `param' entries)
  (iseq_load): account for `misc' and `params' hashes
  (iseq_data_to_ary): add final opt to arg_opt_labels,
   fix kw support, account for unsigned entry->sp
* ext/-test-/iseq_load/iseq_load.c: new ext for test
* ext/-test-/iseq_load/extconf.rb: ditto
* test/-ext-/iseq_load/test_iseq_load.rb: new test

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48705 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 22 insertions, 0 deletions

diff --git a/ext/-test-/iseq_load/extconf.rb b/ext/-test-/iseq_load/extconf.rb
new file mode 100644
index 0000000000..860f30befd
--- /dev/null
+++ b/ext/-test-/iseq_load/extconf.rb
@@ -0,0 +1 @@
+create_makefile("-test-/iseq_load/iseq_load")
diff --git a/ext/-test-/iseq_load/iseq_load.c b/ext/-test-/iseq_load/iseq_load.c
new file mode 100644
index 0000000000..ffdde347e1
--- /dev/null
+++ b/ext/-test-/iseq_load/iseq_load.c
@@ -0,0 +1,21 @@
+#include <ruby.h>
+
+VALUE rb_iseq_load(VALUE data, VALUE parent, VALUE opt);
+
+static VALUE
+iseq_load(int argc, VALUE *argv, VALUE self)
+{
+    VALUE data, opt = Qnil;
+
+    rb_scan_args(argc, argv, "11", &data, &opt);
+
+    return rb_iseq_load(data, 0, opt);
+}
+
+void
+Init_iseq_load(void)
+{
+    VALUE rb_cISeq = rb_eval_string("RubyVM::InstructionSequence");
+
+    rb_define_singleton_method(rb_cISeq, "iseq_load", iseq_load, -1);
+}