rb_define_class_under 530 error.c            VALUE error = rb_define_class_under(rb_mErrno, name, rb_eSystemCallError);
rb_define_class_under 1245 ext/curses/curses.c     cMouseEvent = rb_define_class_under(mCurses,"MouseEvent",rb_cObject);
rb_define_class_under 1317 ext/curses/curses.c     cWindow = rb_define_class_under(mCurses, "Window", rb_cData);
rb_define_class_under 301 ext/digest/digest.c     cDigest_Base = rb_define_class_under(mDigest, "Base", rb_cObject);
rb_define_class_under  27 ext/digest/md5/md5init.c     cDigest_MD5 = rb_define_class_under(mDigest, "MD5", cDigest_Base);
rb_define_class_under  28 ext/digest/rmd160/rmd160init.c     cDigest_RMD160 = rb_define_class_under(mDigest, "RMD160", cDigest_Base);
rb_define_class_under  28 ext/digest/sha1/sha1init.c     cDigest_SHA1 = rb_define_class_under(mDigest, "SHA1", cDigest_Base);
rb_define_class_under  41 ext/digest/sha2/sha2init.c     cDigest_SHA##bitlen = rb_define_class_under(mDigest, "SHA" #bitlen, cDigest_Base); \
rb_define_class_under 662 ext/dl/dl.c      rb_eDLError = rb_define_class_under(rb_mDL, "DLError", rb_eStandardError);
rb_define_class_under 663 ext/dl/dl.c      rb_eDLTypeError = rb_define_class_under(rb_mDL, "DLTypeError", rb_eDLError);
rb_define_class_under 206 ext/dl/handle.c   rb_cDLHandle = rb_define_class_under(rb_mDL, "Handle", rb_cObject);
rb_define_class_under 1029 ext/dl/ptr.c     rb_cDLPtrData = rb_define_class_under(rb_mDL, "PtrData", rb_cObject);
rb_define_class_under 824 ext/dl/sym.c     rb_cDLSymbol = rb_define_class_under(rb_mDL, "Symbol", rb_cObject);
rb_define_class_under 705 ext/iconv/iconv.c     rb_eIconvIllegalSeq = rb_define_class_under(rb_cIconv, "IllegalSequence", rb_eArgError);
rb_define_class_under 706 ext/iconv/iconv.c     rb_eIconvInvalidChar = rb_define_class_under(rb_cIconv, "InvalidCharacter", rb_eArgError);
rb_define_class_under 707 ext/iconv/iconv.c     rb_eIconvOutOfRange = rb_define_class_under(rb_cIconv, "OutOfRange", rb_eRuntimeError);
rb_define_class_under 486 ext/pty/pty.c      eChildExited = rb_define_class_under(cPTY,"ChildExited",rb_eRuntimeError);
rb_define_class_under 797 ext/racc/cparse/cparse.c         Parser = rb_define_class_under(Racc, "Parser", rb_cObject);
rb_define_class_under 806 ext/racc/cparse/cparse.c     CparseParams = rb_define_class_under(Racc, "CparseParams", rb_cObject);
rb_define_class_under 2674 file.c             rb_cStat = rb_define_class_under(rb_cFile, "Stat", rb_cObject);
rb_define_class_under 1322 process.c          rb_cProcStatus = rb_define_class_under(rb_mProcess, "Status", rb_cObject);
rb_define_class_under 167 struct.c       	nstr = rb_define_class_under(klass, cname, klass);