Linux Standard Base C++ Specification for the S390X Architecture 2.0

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".

Portions of the text are copyrighted by the following parties:

The Regents of the University of California
Free Software Foundation
Ian F. Darwin
Paul Vixie
BSDI (now Wind River)
Andrew G Morgan
Jean-loup Gailly and Mark Adler
Massachusetts Institute of Technology

These excerpts are being used in accordance with their respective licenses.

Linux is a trademark of Linus Torvalds.

UNIX a registered trademark of the Open Group in the United States and other countries.

LSB is a trademark of the Free Standards Group in the USA and other countries.

AMD is a trademark of Advanced Micro Devices, Inc.

Intel and Itanium are registered trademarks and Intel386 is a trademarks of Intel Corporation.

OpenGL is a registered trademark of Silicon Graphics, Inc.

List of Tables
2-1. Normative References
3-1. Standard Library Names
6-1. libstdcxx Definition
6-2. libstdcxx - C++ Runtime Support Function Interfaces
6-3. libstdcxx - Class allocator<char> Function Interfaces
6-4. libstdcxx - Class allocator<wchar_t> Function Interfaces
6-5. libstdcxx - Class basic_string Function Interfaces
6-6. libstdcxx - Class gslice Function Interfaces
6-7. libstdcxx - Class __basic_file<char> Function Interfaces
6-8. libstdcxx - Class __default_alloc_template<(bool)1, (int)0> Function Interfaces
6-9. libstdcxx - Class valarray<unsigned> Function Interfaces
6-10. libstdcxx - Class basic_string<char, char_traits<char>, allocator<char> > Function Interfaces
6-11. libstdcxx - Class locale Function Interfaces
6-12. vtable for __cxxabiv1::__enum_type_info
6-13. typeinfo for __cxxabiv1::__enum_type_info
6-14. vtable for __cxxabiv1::__array_type_info
6-15. typeinfo for __cxxabiv1::__array_type_info
6-16. vtable for __cxxabiv1::__class_type_info
6-17. typeinfo for __cxxabiv1::__class_type_info
6-18. libstdcxx - Class __cxxabiv1::__class_type_info Function Interfaces
6-19. vtable for __cxxabiv1::__pbase_type_info
6-20. typeinfo for __cxxabiv1::__pbase_type_info
6-21. vtable for __cxxabiv1::__pointer_type_info
6-22. typeinfo for __cxxabiv1::__pointer_type_info
6-23. vtable for __cxxabiv1::__function_type_info
6-24. typeinfo for __cxxabiv1::__function_type_info
6-25. vtable for __cxxabiv1::__si_class_type_info
6-26. typeinfo for __cxxabiv1::__si_class_type_info
6-27. libstdcxx - Class __cxxabiv1::__si_class_type_info Function Interfaces
6-28. vtable for __cxxabiv1::__vmi_class_type_info
6-29. typeinfo for __cxxabiv1::__vmi_class_type_info
6-30. libstdcxx - Class __cxxabiv1::__vmi_class_type_info Function Interfaces
6-31. vtable for __cxxabiv1::__fundamental_type_info
6-32. typeinfo for __cxxabiv1::__fundamental_type_info
6-33. vtable for __cxxabiv1::__pointer_to_member_type_info
6-34. typeinfo for __cxxabiv1::__pointer_to_member_type_info
6-35. vtable for __gnu_cxx::stdio_filebuf<char, char_traits<char> >
6-36. typeinfo for __gnu_cxx::stdio_filebuf<char, char_traits<char> >
6-37. vtable for __gnu_cxx::stdio_filebuf<wchar_t, char_traits<wchar_t> >
6-38. typeinfo for __gnu_cxx::stdio_filebuf<wchar_t, char_traits<wchar_t> >
6-39. vtable for locale::facet
6-40. typeinfo for locale::facet
6-41. libstdcxx - Class locale::facet Function Interfaces
6-42. vtable for ios_base::failure
6-43. typeinfo for ios_base::failure
6-44. vtable for basic_iostream<char, char_traits<char> >
6-45. typeinfo for basic_iostream<char, char_traits<char> >
6-46. libstdcxx - Class basic_iostream<char, char_traits<char> > Function Interfaces
6-47. vtable for basic_istream<char, char_traints<char> >
6-48. typeinfo for basic_istream<char, char_traints<char> >
6-49. libstdcxx - Class basic_istream<char, char_traints<char> > Function Interfaces
6-50. vtable for basic_ostream<char, char_traits<char> >
6-51. typeinfo for basic_ostream<char, char_traits<char> >
6-52. libstdcxx - Class basic_ostream<char, char_traits<char> > Function Interfaces
6-53. libstdcxx - Class basic_ostream<char, char_traits<char> > Data Interfaces
6-54. typeinfo for __num_base
6-55. libstdcxx - Class __num_base Function Interfaces
6-56. vtable for bad_typeid
6-57. typeinfo for bad_typeid
6-58. typeinfo for ctype_base
6-59. vtable for istrstream
6-60. typeinfo for istrstream
6-61. libstdcxx - Class istrstream Function Interfaces
6-62. typeinfo for money_base
6-63. vtable for moneypunct<char, (bool)0>
6-64. typeinfo for moneypunct<char, (bool)0>
6-65. libstdcxx - Class moneypunct<char, (bool)0> Function Interfaces
6-66. vtable for moneypunct<char, (bool)1>
6-67. typeinfo for moneypunct<char, (bool)1>
6-68. libstdcxx - Class moneypunct<char, (bool)1> Function Interfaces
6-69. vtable for moneypunct<wchar_t, (bool)0>
6-70. typeinfo for moneypunct<wchar_t, (bool)0>
6-71. libstdcxx - Class moneypunct<wchar_t, (bool)0> Function Interfaces
6-72. vtable for moneypunct<wchar_t, (bool)1>
6-73. typeinfo for moneypunct<wchar_t, (bool)1>
6-74. libstdcxx - Class moneypunct<wchar_t, (bool)1> Function Interfaces
6-75. vtable for ostrstream
6-76. typeinfo for ostrstream
6-77. libstdcxx - Class ostrstream Function Interfaces
6-78. vtable for __timepunct<char>
6-79. typeinfo for __timepunct<char>
6-80. libstdcxx - Class __timepunct<char> Function Interfaces
6-81. vtable for __timepunct<wchar_t>
6-82. typeinfo for __timepunct<wchar_t>
6-83. libstdcxx - Class __timepunct<wchar_t> Function Interfaces
6-84. vtable for logic_error
6-85. typeinfo for logic_error
6-86. vtable for range_error
6-87. typeinfo for range_error
6-88. typeinfo for codecvt_base
6-89. vtable for ctype_byname<char>
6-90. typeinfo for ctype_byname<char>
6-91. libstdcxx - Class ctype_byname<char> Function Interfaces
6-92. libstdcxx - Class ctype_byname<wchar_t> Function Interfaces
6-93. vtable for domain_error
6-94. typeinfo for domain_error
6-95. vtable for length_error
6-96. typeinfo for length_error
6-97. vtable for out_of_range
6-98. typeinfo for out_of_range
6-99. vtable for strstreambuf
6-100. typeinfo for strstreambuf
6-101. libstdcxx - Class strstreambuf Function Interfaces
6-102. vtable for bad_exception
6-103. typeinfo for bad_exception
6-104. vtable for basic_filebuf<char, char_traits<char> >
6-105. typeinfo for basic_filebuf<char, char_traits<char> >
6-106. libstdcxx - Class basic_filebuf<char, char_traits<char> > Function Interfaces
6-107. vtable for basic_filebuf<wchar_t, char_traits<wchar_t> >
6-108. typeinfo for basic_filebuf<wchar_t, char_traits<wchar_t> >
6-109. libstdcxx - Class basic_filebuf<wchar_t, char_traits<wchar_t> > Function Interfaces
6-110. vtable for basic_fstream<char, char_traits<char> >
6-111. typeinfo for basic_fstream<char, char_traits<char> >
6-112. libstdcxx - Class basic_fstream<char, char_traits<char> > Function Interfaces
6-113. vtable for basic_fstream<wchar_t, char_traits<wchar_t> >
6-114. typeinfo for basic_fstream<wchar_t, char_traits<wchar_t> >
6-115. libstdcxx - Class basic_fstream<wchar_t, char_traits<wchar_t> > Function Interfaces
6-116. vtable for basic_istream<wchar_t, char_traits<wchar_t> >
6-117. typeinfo for basic_istream<wchar_t, char_traits<wchar_t> >
6-118. libstdcxx - Class basic_istream<wchar_t, char_traits<wchar_t> > Function Interfaces
6-119. vtable for basic_ostream<wchar_t, char_traits<wchar_t> >
6-120. typeinfo for basic_ostream<wchar_t, char_traits<wchar_t> >
6-121. libstdcxx - Class basic_ostream<wchar_t, char_traits<wchar_t> > Function Interfaces
6-122. typeinfo for messages_base
6-123. vtable for runtime_error
6-124. typeinfo for runtime_error
6-125. vtable for basic_ifstream<char, char_traits<char> >
6-126. typeinfo for basic_ifstream<char, char_traits<char> >
6-127. libstdcxx - Class basic_ifstream<char, char_traits<char> > Function Interfaces
6-128. vtable for basic_ifstream<wchar_t, char_traits<wchar_t> >
6-129. typeinfo for basic_ifstream<wchar_t, char_traits<wchar_t> >
6-130. libstdcxx - Class basic_ifstream<wchar_t, char_traits<wchar_t> > Function Interfaces
6-131. vtable for basic_iostream<wchar_t, char_traits<wchar_t> >
6-132. typeinfo for basic_iostream<wchar_t, char_traits<wchar_t> >
6-133. libstdcxx - Class basic_iostream<wchar_t, char_traits<wchar_t> > Function Interfaces
6-134. vtable for basic_ofstream<char, char_traits<char> >
6-135. typeinfo for basic_ofstream<char, char_traits<char> >
6-136. libstdcxx - Class basic_ofstream<char, char_traits<char> > Function Interfaces
6-137. vtable for basic_ofstream<wchar_t, char_traits<wchar_t> >
6-138. typeinfo for basic_ofstream<wchar_t, char_traits<wchar_t> >
6-139. libstdcxx - Class basic_ofstream<wchar_t, char_traits<wchar_t> > Function Interfaces
6-140. vtable for codecvt_byname<char, char, __mbstate_t>
6-141. typeinfo for codecvt_byname<char, char, __mbstate_t>
6-142. libstdcxx - Class codecvt_byname<char, char, __mbstate_t> Function Interfaces
6-143. vtable for codecvt_byname<wchar_t, char, __mbstate_t>
6-144. typeinfo for codecvt_byname<wchar_t, char, __mbstate_t>
6-145. vtable for collate_byname<wchar_t>
6-146. typeinfo for collate_byname<wchar_t>
6-147. libstdcxx - Class codecvt_byname<wchar_t, char, __mbstate_t> Function Interfaces
6-148. vtable for collate_byname<char>
6-149. typeinfo for collate_byname<char>
6-150. libstdcxx - Class collate_byname<char> Function Interfaces
6-151. vtable for overflow_error
6-152. typeinfo for overflow_error
6-153. vtable for basic_streambuf<char, char_traits<char> >
6-154. typeinfo for basic_streambuf<char, char_traits<char> >
6-155. libstdcxx - Class basic_streambuf<char, char_traits<char> > Function Interfaces
6-156. vtable for basic_streambuf<wchar_t, char_traits<wchar_t> >
6-157. typeinfo for basic_streambuf<wchar_t, char_traits<wchar_t> >
6-158. libstdcxx - Class basic_streambuf<wchar_t, char_traits<wchar_t> > Function Interfaces
6-159. vtable for basic_stringbuf<char, char_traits<char>, allocator<char> >
6-160. typeinfo for basic_stringbuf<char, char_traits<char>, allocator<char> >
6-161. libstdcxx - Class basic_stringbuf<char, char_traits<char>, allocator<char> > Function Interfaces
6-162. vtable for basic_stringbuf<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >
6-163. typeinfo for basic_stringbuf<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >
6-164. libstdcxx - Class basic_stringbuf<wchar_t, char_traits<wchar_t>, allocator<wchar_t> > Function Interfaces
6-165. vtable for messages_byname<char>
6-166. typeinfo for messages_byname<char>
6-167. libstdcxx - Class messages_byname<char> Function Interfaces
6-168. vtable for messages_byname<wchar_t>
6-169. typeinfo for messages_byname<wchar_t>
6-170. libstdcxx - Class messages_byname<wchar_t> Function Interfaces
6-171. vtable for numpunct_byname<char>
6-172. typeinfo for numpunct_byname<char>
6-173. libstdcxx - Class numpunct_byname<char> Function Interfaces
6-174. vtable for numpunct_byname<wchar_t>
6-175. typeinfo for numpunct_byname<wchar_t>
6-176. libstdcxx - Class numpunct_byname<wchar_t> Function Interfaces
6-177. vtable for time_get_byname<char, istreambuf_iterator<char, char_traits<char> > >
6-178. typeinfo for time_get_byname<char, istreambuf_iterator<char, char_traits<char> > >
6-179. libstdcxx - Class time_get_byname<char, istreambuf_iterator<char, char_traits<char> > > Function Interfaces
6-180. vtable for time_get_byname<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-181. typeinfo for time_get_byname<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-182. libstdcxx - Class time_get_byname<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > > Function Interfaces
6-183. vtable for time_put_byname<char, ostreambuf_iterator<char, char_traits<char> > >
6-184. typeinfo for time_put_byname<char, ostreambuf_iterator<char, char_traits<char> > >
6-185. libstdcxx - Class time_put_byname<char, ostreambuf_iterator<char, char_traits<char> > > Function Interfaces
6-186. vtable for time_put_byname<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-187. typeinfo for time_put_byname<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-188. libstdcxx - Class time_put_byname<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > > Function Interfaces
6-189. vtable for underflow_error
6-190. typeinfo for underflow_error
6-191. vtable for invalid_argument
6-192. typeinfo for invalid_argument
6-193. vtable for moneypunct_byname<char, (bool)0>
6-194. typeinfo for moneypunct_byname<char, (bool)0>
6-195. libstdcxx - Class moneypunct_byname<char, (bool)0> Function Interfaces
6-196. vtable for moneypunct_byname<char, (bool)1>
6-197. typeinfo for moneypunct_byname<char, (bool)1>
6-198. libstdcxx - Class moneypunct_byname<char, (bool)1> Function Interfaces
6-199. vtable for moneypunct_byname<wchar_t, (bool)0>
6-200. typeinfo for moneypunct_byname<wchar_t, (bool)0>
6-201. libstdcxx - Class moneypunct_byname<wchar_t, (bool)0> Function Interfaces
6-202. vtable for moneypunct_byname<wchar_t, (bool)1>
6-203. typeinfo for moneypunct_byname<wchar_t, (bool)1>
6-204. libstdcxx - Class moneypunct_byname<wchar_t, (bool)1> Function Interfaces
6-205. vtable for basic_stringstream<char, char_traits<char>, allocator<char> >
6-206. typeinfo for basic_stringstream<char, char_traits<char>, allocator<char> >
6-207. libstdcxx - Class basic_stringstream<char, char_traits<char>, allocator<char> > Function Interfaces
6-208. vtable for basic_stringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >
6-209. typeinfo for basic_stringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >
6-210. libstdcxx - Class basic_stringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> > Function Interfaces
6-211. vtable for basic_istringstream<char, char_traits<char>, allocator<char> >
6-212. typeinfo for basic_istringstream<char, char_traits<char>, allocator<char> >
6-213. libstdcxx - Class basic_istringstream<char, char_traits<char>, allocator<char> > Function Interfaces
6-214. vtable for basic_istringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >
6-215. typeinfo for basic_istringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >
6-216. libstdcxx - Class basic_istringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> > Function Interfaces
6-217. vtable for basic_ostringstream<char, char_traits<char>, allocator<char> >
6-218. typeinfo for basic_ostringstream<char, char_traits<char>, allocator<char> >
6-219. libstdcxx - Class basic_ostringstream<char, char_traits<char>, allocator<char> > Function Interfaces
6-220. vtable for basic_ostringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >
6-221. typeinfo for basic_ostringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> >
6-222. libstdcxx - Class basic_ostringstream<wchar_t, char_traits<wchar_t>, allocator<wchar_t> > Function Interfaces
6-223. vtable for __ctype_abstract_base<char>
6-224. typeinfo for __ctype_abstract_base<char>
6-225. vtable for __ctype_abstract_base<wchar_t>
6-226. typeinfo for __ctype_abstract_base<wchar_t>
6-227. vtable for __codecvt_abstract_base<wchar_t, char, __mbstate_t>
6-228. typeinfo for __codecvt_abstract_base<wchar_t, char, __mbstate_t>
6-229. vtable for ctype<char>
6-230. typeinfo for ctype<char>
6-231. libstdcxx - Class ctype<char> Function Interfaces
6-232. vtable for ctype<wchar_t>
6-233. typeinfo for ctype<wchar_t>
6-234. libstdcxx - Class ctype<wchar_t> Function Interfaces
6-235. vtable for codecvt<char, char, __mbstate_t>
6-236. typeinfo for codecvt<char, char, __mbstate_t>
6-237. vtable for __codecvt_abstract_base<char, char, __mbstate_t>
6-238. typeinfo for __codecvt_abstract_base<char, char, __mbstate_t>
6-239. libstdcxx - Class codecvt<char, char, __mbstate_t> Function Interfaces
6-240. vtable for codecvt<wchar_t, char, __mbstate_t>
6-241. typeinfo for codecvt<wchar_t, char, __mbstate_t>
6-242. libstdcxx - Class codecvt<wchar_t, char, __mbstate_t> Function Interfaces
6-243. vtable for collate<char>
6-244. typeinfo for collate<char>
6-245. libstdcxx - Class collate<char> Function Interfaces
6-246. vtable for collate<wchar_t>
6-247. typeinfo for collate<wchar_t>
6-248. libstdcxx - Class collate<wchar_t> Function Interfaces
6-249. vtable for num_get<char, istreambuf_iterator<char, char_traits<char> > >
6-250. typeinfo for num_get<char, istreambuf_iterator<char, char_traits<char> > >
6-251. libstdcxx - Class num_get<char, istreambuf_iterator<char, char_traits<char> > > Function Interfaces
6-252. vtable for num_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-253. typeinfo for num_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-254. libstdcxx - Class num_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > > Function Interfaces
6-255. vtable for num_put<char, ostreambuf_iterator<char, char_traits<char> > >
6-256. typeinfo for num_put<char, ostreambuf_iterator<char, char_traits<char> > >
6-257. libstdcxx - Class num_put<char, ostreambuf_iterator<char, char_traits<char> > > Function Interfaces
6-258. vtable for num_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-259. typeinfo for num_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-260. libstdcxx - Class num_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > > Function Interfaces
6-261. vtable for bad_cast
6-262. typeinfo for bad_cast
6-263. typeinfo for ios_base
6-264. vtable for messages<char>
6-265. typeinfo for messages<char>
6-266. libstdcxx - Class messages<char> Function Interfaces
6-267. vtable for messages<wchar_t>
6-268. typeinfo for messages<wchar_t>
6-269. libstdcxx - Class messages<wchar_t> Function Interfaces
6-270. vtable for numpunct<char>
6-271. typeinfo for numpunct<char>
6-272. libstdcxx - Class numpunct<char> Function Interfaces
6-273. vtable for numpunct<wchar_t>
6-274. typeinfo for numpunct<wchar_t>
6-275. libstdcxx - Class numpunct<wchar_t> Function Interfaces
6-276. vtable for time_get<char, istreambuf_iterator<char, char_traits<char> > >
6-277. typeinfo for time_get<char, istreambuf_iterator<char, char_traits<char> > >
6-278. libstdcxx - Class time_get<char, istreambuf_iterator<char, char_traits<char> > > Function Interfaces
6-279. vtable for time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-280. typeinfo for time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-281. libstdcxx - Class time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > > Function Interfaces
6-282. vtable for time_put<char, ostreambuf_iterator<char, char_traits<char> > >
6-283. typeinfo for time_put<char, ostreambuf_iterator<char, char_traits<char> > >
6-284. libstdcxx - Class time_put<char, ostreambuf_iterator<char, char_traits<char> > > Function Interfaces
6-285. vtable for time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-286. typeinfo for time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-287. libstdcxx - Class time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > > Function Interfaces
6-288. vtable for bad_alloc
6-289. typeinfo for bad_alloc
6-290. vtable for basic_ios<char, char_traits<char> >
6-291. typeinfo for basic_ios<char, char_traits<char> >
6-292. vtable for basic_ios<wchar_t, char_traits<wchar_t> >
6-293. typeinfo for basic_ios<wchar_t, char_traits<wchar_t> >
6-294. vtable for exception
6-295. typeinfo for exception
6-296. vtable for money_get<char, istreambuf_iterator<char, char_traits<char> > >
6-297. typeinfo for money_get<char, istreambuf_iterator<char, char_traits<char> > >
6-298. libstdcxx - Class money_get<char, istreambuf_iterator<char, char_traits<char> > > Function Interfaces
6-299. vtable for money_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-300. typeinfo for money_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-301. libstdcxx - Class money_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > > Function Interfaces
6-302. vtable for money_put<char, ostreambuf_iterator<char, char_traits<char> > >
6-303. typeinfo for money_put<char, ostreambuf_iterator<char, char_traits<char> > >
6-304. libstdcxx - Class money_put<char, ostreambuf_iterator<char, char_traits<char> > > Function Interfaces
6-305. vtable for money_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-306. typeinfo for money_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >
6-307. libstdcxx - Class money_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > > Function Interfaces
6-308. vtable for strstream
6-309. typeinfo for strstream
6-310. libstdcxx - Class strstream Function Interfaces
6-311. typeinfo for time_base
6-312. vtable for type_info
6-313. typeinfo for type_info

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