`rb_encdb`-prefixed functions are only for internal use.
use rb_enc_alias instead.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63783 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* encoding.c (rb_enc_capable): make it extern to check enc_capable.
  enc_index can be set to limited types such as T_STRING, T_REGEX
  and so on. This function check an object is this kind of types.

* include/ruby/encoding.h: ditto.

* encoding.c (enc_set_index): check a given object is enc_capable.

* include/ruby/encoding.h (PUREFUNC):

* marshal.c (encoding_name): check `rb_enc_capable` first.

* marshal.c (r_ivar): ditto. If it is not enc_capable, it should be
  malformed data.

* spec/ruby/optional/capi/encoding_spec.rb: remove tests depending
  on the wrong feature: all objects can set enc_index.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63777 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

because of r61712 and r61713

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61725 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* include/ruby/encoding.h: include "ruby/ruby.h" explicitly for
  enum ruby_fl_type and VALUE.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56478 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* include/ruby/defines.h (RB_GNUC_EXTENSION, RB_GNUC_EXTENSION_BLOCK):
  macros for skipping __extension__ on non-GCC compilers.
* eval_error.c (warn_print): use RB_GNUC_EXTENSION_BLOCK instead of
  __extension__ because __extension__ is a GNU extension.
  Fix compile error on Solaris 10 with Oracle Solaris Studio 12.x.
  [Bug #12397] [ruby-dev:49629].
* internal.h (rb_fstring_cstr, rb_fstring_enc_cstr): ditto
* include/ruby/encoding.h (rb_enc_str_new, rb_enc_str_new_cstr): ditto
* include/ruby/intern.h (rb_str_new, rb_str_new_cstr,
  rb_usascii_str_new, rb_utf8_str_new, rb_tainted_str_new_cstr,
  rb_usascii_str_new_cstr, rb_utf8_str_new_cstr,
  rb_external_str_new_cstr, rb_locale_str_new_cstr,
  rb_str_buf_new_cstr, rb_str_cat_cstr, rb_exc_new_cstr): ditto


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55082 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54986 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  and define CONSTFUNC and PUREFUNC if available.
  Note that I don't add those options as default because
  it still shows many false-positive (it seems not to consider
  longjmp).

* vm_eval.c (stack_check): get rb_thread_t* as an argument
  to avoid duplicate call of GET_THREAD().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54952 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* include/ruby/encoding.h (rb_enc_asciicompat): turn into an
  inline function to get rid of evalucating the argument twice.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53730 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* include/ruby/ruby.h: prefix RUBY or RB to global symbols to get
  rid of name conflicts with other headers.
* include/ruby/encoding.h, include/ruby/intern.h: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51851 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* include/ruby/encoding.h (ENC_CODERANGE_CLEAN_P): predicate that
  tells if the coderange is clean, that is 7bit or valid, and no
  needs to scrub.
* re.c (rb_reg_expr_str): use ENC_CODERANGE_CLEAN_P.
* string.c (enc_strlen, rb_enc_cr_str_buf_cat, rb_str_scrub):
  ditto.
* string.c (rb_str_enumerate_chars): ditto, and suppress a warning
  by gcc6.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51278 b2dd03c8-39d4-4d8f-98ff-823fe69b080e