1<section xmlns="http://docbook.org/ns/docbook" version="5.0"
2	 xml:id="status.iso.1998" xreflabel="ISO C++ 1998">
3<?dbhtml filename="status_iso_cxx1998.html"?>
4
5<info><title>C++ 1998/2003</title>
6  <keywordset>
7    <keyword>ISO C++</keyword>
8    <keyword>1998</keyword>
9  </keywordset>
10</info>
11
12
13<section xml:id="iso.1998.status" xreflabel="Implementation Status">
14<info><title>Implementation Status</title></info>
15
16<para>
17This status table is based on the table of contents of ISO/IEC 14882:2003.
18</para>
19
20<para>
21This section describes the C++ support in the GCC 10 release series.
22</para>
23
24<!-- Status is Yes or No, Broken/Partial-->
25<!--
26   Yes
27
28   No
29      <?dbhtml bgcolor="#C8B0B0" ?>
30   Broken/Partial
31      <?dbhtml bgcolor="#B0B0B0" ?>
32-->
33<table frame="all" xml:id="table.cxx98_status">
34  <title>C++ 1998/2003 Implementation Status</title>
35
36<tgroup cols="4" align="left" colsep="0" rowsep="1">
37<colspec colname="c1"/>
38<colspec colname="c2"/>
39<colspec colname="c3"/>
40<colspec colname="c4"/>
41  <thead>
42    <row>
43      <entry>Section</entry>
44      <entry>Description</entry>
45      <entry>Status</entry>
46      <entry>Comments</entry>
47    </row>
48  </thead>
49
50  <tbody>
51    <row>
52      <entry>
53	<emphasis>18</emphasis>
54      </entry>
55      <entry namest="c2" nameend="c4" align="left">
56	<emphasis>Language support</emphasis>
57      </entry>
58    </row>
59
60    <row>
61      <entry>18.1</entry>
62      <entry>Types</entry>
63      <entry>Y</entry>
64      <entry/>
65    </row>
66    <row>
67      <entry>18.2</entry>
68      <entry>Implementation properties</entry>
69      <entry>Y</entry>
70      <entry/>
71    </row>
72    <row>
73      <entry>18.2.1</entry>
74      <entry>Numeric Limits</entry>
75      <entry/>
76      <entry/>
77    </row>
78    <row>
79      <entry>18.2.1.1</entry>
80      <entry>Class template <code>numeric_limits</code></entry>
81      <entry>Y</entry>
82      <entry/>
83    </row>
84    <row>
85      <entry>18.2.1.2</entry>
86      <entry><code>numeric_limits</code> members</entry>
87      <entry>Y</entry>
88    </row>
89    <row>
90      <entry>18.2.1.3</entry>
91      <entry><code>float_round_style</code></entry>
92      <entry>Y</entry>
93    </row>
94    <row>
95      <entry>18.2.1.4</entry>
96      <entry><code>float_denorm_style</code></entry>
97      <entry>Y</entry>
98    </row>
99    <row>
100      <entry>18.2.1.5</entry>
101      <entry><code>numeric_limits</code> specializations</entry>
102      <entry>Y</entry>
103      <entry/>
104    </row>
105    <row>
106      <entry>18.2.2</entry>
107      <entry>C Library</entry>
108      <entry>Y</entry>
109      <entry/>
110    </row>
111    <row>
112      <entry>18.3</entry>
113      <entry>Start and termination</entry>
114      <entry>Y</entry>
115      <entry/>
116    </row>
117    <row>
118      <entry>18.4</entry>
119      <entry>Dynamic memory management</entry>
120      <entry>Y</entry>
121      <entry/>
122    </row>
123    <row>
124      <entry>18.5</entry>
125      <entry>Type identification</entry>
126      <entry/>
127      <entry/>
128    </row>
129    <row>
130      <entry>18.5.1</entry>
131      <entry>Class type_info</entry>
132      <entry>Y</entry>
133      <entry/>
134    </row>
135    <row>
136      <entry>18.5.2</entry>
137      <entry>Class bad_cast</entry>
138      <entry>Y</entry>
139      <entry/>
140    </row>
141    <row>
142      <entry>18.5.3</entry>
143      <entry>Class bad_typeid</entry>
144      <entry>Y</entry>
145      <entry/>
146    </row>
147    <row>
148      <entry>18.6</entry>
149      <entry>Exception handling</entry>
150      <entry/>
151      <entry/>
152    </row>
153    <row>
154      <entry>18.6.1</entry>
155      <entry>Class exception</entry>
156      <entry>Y</entry>
157      <entry/>
158    </row>
159    <row>
160      <entry>18.6.2</entry>
161      <entry>Violation exception-specifications</entry>
162      <entry>Y</entry>
163      <entry/>
164    </row>
165    <row>
166      <entry>18.6.3</entry>
167      <entry>Abnormal termination</entry>
168      <entry>Y</entry>
169      <entry/>
170    </row>
171    <row>
172      <entry>18.6.4</entry>
173      <entry><code>uncaught_exception</code></entry>
174      <entry>Y</entry>
175      <entry/>
176    </row>
177    <row>
178      <entry>18.7</entry>
179      <entry>Other runtime support</entry>
180      <entry>Y</entry>
181      <entry/>
182    </row>
183    <row>
184      <entry>
185	<emphasis>19</emphasis>
186      </entry>
187      <entry namest="c2" nameend="c4" align="left">
188	<emphasis>Diagnostics</emphasis>
189      </entry>
190    </row>
191    <row>
192      <entry>19.1</entry>
193      <entry>Exception classes</entry>
194      <entry>Y</entry>
195      <entry/>
196    </row>
197    <row>
198      <entry>19.2</entry>
199      <entry>Assertions</entry>
200      <entry>Y</entry>
201      <entry/>
202    </row>
203    <row>
204      <entry>19.3</entry>
205      <entry>Error numbers</entry>
206      <entry>Y</entry>
207      <entry/>
208    </row>
209    <row>
210      <entry>
211	<emphasis>20</emphasis>
212      </entry>
213      <entry namest="c2" nameend="c4" align="left">
214	<emphasis>General utilities</emphasis>
215      </entry>
216    </row>
217    <row>
218      <entry>20.1</entry>
219      <entry>Requirements</entry>
220      <entry>Y</entry>
221      <entry/>
222    </row>
223   <row>
224      <entry>20.2</entry>
225      <entry>Utility components</entry>
226      <entry/>
227      <entry/>
228    </row>
229    <row>
230      <entry>20.2.1</entry>
231      <entry>Operators</entry>
232      <entry>Y</entry>
233      <entry/>
234    </row>
235    <row>
236      <entry>20.2.2</entry>
237      <entry><code>pair</code></entry>
238      <entry>Y</entry>
239      <entry/>
240    </row>
241   <row>
242      <entry>20.3</entry>
243      <entry>Function objects</entry>
244      <entry/>
245      <entry/>
246    </row>
247    <row>
248      <entry>20.3.1</entry>
249      <entry>Base</entry>
250      <entry>Y</entry>
251      <entry/>
252    </row>
253    <row>
254      <entry>20.3.2</entry>
255      <entry>Arithmetic operation</entry>
256      <entry>Y</entry>
257      <entry/>
258    </row>
259    <row>
260      <entry>20.3.3</entry>
261      <entry>Comparisons</entry>
262      <entry>Y</entry>
263      <entry/>
264    </row>
265    <row>
266      <entry>20.3.4</entry>
267      <entry>Logical operations</entry>
268      <entry>Y</entry>
269      <entry/>
270    </row>
271    <row>
272      <entry>20.3.5</entry>
273      <entry>Negators</entry>
274      <entry>Y</entry>
275      <entry/>
276    </row>
277    <row>
278      <entry>20.3.6</entry>
279      <entry>Binders</entry>
280      <entry>Y</entry>
281      <entry/>
282    </row>
283    <row>
284      <entry>20.3.7</entry>
285      <entry>Adaptors for pointers to functions</entry>
286      <entry>Y</entry>
287      <entry/>
288    </row>
289    <row>
290      <entry>20.3.8</entry>
291      <entry>Adaptors for pointers to members</entry>
292      <entry>Y</entry>
293      <entry/>
294    </row>
295    <row>
296      <entry>20.4</entry>
297      <entry>Memory</entry>
298      <entry/>
299      <entry/>
300    </row>
301    <row>
302      <entry>20.4.1</entry>
303      <entry>The default allocator</entry>
304      <entry>Y</entry>
305      <entry/>
306    </row>
307    <row>
308      <entry>20.4.2</entry>
309      <entry>Raw storage iterator</entry>
310      <entry>Y</entry>
311      <entry/>
312    </row>
313    <row>
314      <entry>20.4.3</entry>
315      <entry>Temporary buffers</entry>
316      <entry>Y</entry>
317      <entry/>
318    </row>
319    <row>
320      <entry>20.4.4</entry>
321      <entry>Specialized algorithms</entry>
322      <entry>Y</entry>
323      <entry/>
324    </row>
325    <row>
326      <entry>20.4.4.1</entry>
327      <entry><code>uninitialized_copy</code></entry>
328      <entry>Y</entry>
329      <entry/>
330    </row>
331    <row>
332      <entry>20.4.4.2</entry>
333      <entry><code>uninitialized_fill</code></entry>
334      <entry>Y</entry>
335      <entry/>
336    </row>
337    <row>
338      <entry>20.4.4.3</entry>
339      <entry><code>uninitialized_fill_n</code></entry>
340      <entry>Y</entry>
341      <entry/>
342    </row>
343    <row>
344      <entry>20.4.5</entry>
345      <entry>Class template <code>auto_ptr</code></entry>
346      <entry>Y</entry>
347      <entry/>
348    </row>
349    <row>
350      <entry>20.4.6</entry>
351      <entry>C library</entry>
352      <entry>Y</entry>
353      <entry/>
354    </row>
355    <row>
356      <entry>
357	<emphasis>21</emphasis>
358      </entry>
359      <entry namest="c2" nameend="c4" align="left">
360	<emphasis>Strings</emphasis>
361      </entry>
362    </row>
363    <row>
364      <entry>21.1</entry>
365      <entry>Character traits</entry>
366      <entry/>
367      <entry/>
368    </row>
369    <row>
370      <entry>21.1.1</entry>
371      <entry>Character traits requirements</entry>
372      <entry>Y</entry>
373      <entry/>
374    </row>
375    <row>
376      <entry>21.1.2</entry>
377      <entry>traits typedef</entry>
378      <entry>Y</entry>
379      <entry/>
380    </row>
381    <row>
382      <entry>21.1.3</entry>
383      <entry><code>char_traits</code> specializations</entry>
384      <entry/>
385      <entry/>
386    </row>
387    <row>
388      <entry>21.1.3.1</entry>
389      <entry>struct <code>char_traits&lt;char&gt;</code></entry>
390      <entry>Y</entry>
391      <entry/>
392    </row>
393    <row>
394      <entry>21.1.3.2</entry>
395      <entry>struct <code>char_traits&lt;wchar_t&gt;</code></entry>
396      <entry>Y</entry>
397      <entry/>
398    </row>
399    <row>
400      <entry>21.2</entry>
401      <entry>String classes</entry>
402      <entry>Y</entry>
403      <entry/>
404    </row>
405    <row>
406      <entry>21.3</entry>
407      <entry>Class template <code>basic_string</code></entry>
408      <entry>Y</entry>
409      <entry/>
410    </row>
411    <row>
412      <entry>21.4</entry>
413      <entry>Null-terminated sequence utilities</entry>
414      <entry>Y</entry>
415      <entry>C library dependency</entry>
416    </row>
417    <row>
418      <entry>
419      	<emphasis>22</emphasis>
420      </entry>
421      <entry namest="c2" nameend="c4" align="left">
422	<emphasis>Localization</emphasis>
423      </entry>
424    </row>
425    <row>
426      <entry>22.1</entry>
427      <entry>Locales</entry>
428      <entry/>
429      <entry/>
430    </row>
431    <row>
432      <entry>22.1.1</entry>
433      <entry>Class <code>locale</code></entry>
434      <entry>Y</entry>
435      <entry/>
436    </row>
437    <row>
438      <entry>22.1.2</entry>
439      <entry><code>locale</code> globals</entry>
440      <entry>Y</entry>
441      <entry/>
442    </row>
443    <row>
444      <entry>22.1.3</entry>
445      <entry>Convenience interfaces</entry>
446      <entry/>
447      <entry/>
448    </row>
449    <row>
450      <entry>22.1.3.1</entry>
451      <entry>Character classification</entry>
452      <entry>Y</entry>
453      <entry/>
454    </row>
455    <row>
456      <entry>22.1.3.2</entry>
457      <entry>Character conversions</entry>
458      <entry>Y</entry>
459      <entry/>
460    </row>
461    <row>
462      <entry>22.2</entry>
463      <entry>Standard locale categories</entry>
464      <entry/>
465      <entry/>
466    </row>
467    <row>
468      <entry>22.2.1</entry>
469      <entry><code>ctype</code></entry>
470      <entry>Y</entry>
471      <entry/>
472    </row>
473    <row>
474      <entry>22.2.2</entry>
475      <entry>Numeric</entry>
476      <entry/>
477      <entry/>
478    </row>
479    <row>
480      <entry>22.2.2.1</entry>
481      <entry><code>num_get</code></entry>
482      <entry>Y</entry>
483      <entry/>
484    </row>
485    <row>
486      <entry>22.2.2.2</entry>
487      <entry><code>num_put</code></entry>
488      <entry>Y</entry>
489      <entry/>
490    </row>
491    <row>
492      <entry>22.2.3</entry>
493      <entry><code>num_punct</code></entry>
494      <entry>Y</entry>
495      <entry/>
496    </row>
497    <row>
498      <entry>22.2.4</entry>
499      <entry><code>collate</code></entry>
500      <entry>Y</entry>
501      <entry/>
502    </row>
503    <row>
504      <entry>22.2.5</entry>
505      <entry>Time</entry>
506      <entry/>
507      <entry/>
508    </row>
509    <row>
510      <entry>22.2.5.1</entry>
511      <entry><code>time_get</code></entry>
512      <entry>Y</entry>
513      <entry/>
514    </row>
515    <row>
516      <entry>22.2.5.2</entry>
517      <entry><code>time_get_byname</code></entry>
518      <entry>Y</entry>
519      <entry/>
520    </row>
521    <row>
522      <entry>22.2.5.3</entry>
523      <entry><code>time_put</code></entry>
524      <entry>Y</entry>
525      <entry/>
526    </row>
527    <row>
528      <entry>22.2.5.3</entry>
529      <entry><code>time_put_byname</code></entry>
530      <entry>Y</entry>
531      <entry/>
532    </row>
533    <row>
534      <entry>22.2.6</entry>
535      <entry>Monetary</entry>
536      <entry/>
537      <entry/>
538    </row>
539    <row>
540      <entry>22.2.6.1</entry>
541      <entry><code>money_get</code></entry>
542      <entry>Y</entry>
543      <entry/>
544    </row>
545    <row>
546      <entry>22.2.6.2</entry>
547      <entry><code>money_put</code></entry>
548      <entry>Y</entry>
549      <entry/>
550    </row>
551    <row>
552      <entry>22.2.6.3</entry>
553      <entry><code>money_punct</code></entry>
554      <entry>Y</entry>
555      <entry/>
556    </row>
557    <row>
558      <entry>22.2.6.4</entry>
559      <entry><code>money_punct_byname</code></entry>
560      <entry>Y</entry>
561      <entry/>
562    </row>
563    <row>
564      <entry>22.2.7</entry>
565      <entry><code>messages</code></entry>
566      <entry>Y</entry>
567      <entry/>
568    </row>
569    <row>
570      <entry>22.2.8</entry>
571      <entry>Program-defined facets</entry>
572      <entry>Y</entry>
573      <entry/>
574    </row>
575    <row>
576      <entry>22.3</entry>
577      <entry>C Library Locales</entry>
578      <entry>Y</entry>
579      <entry/>
580    </row>
581    <row>
582      <entry>
583	<emphasis>23</emphasis>
584      </entry>
585      <entry namest="c2" nameend="c4" align="left">
586	<emphasis>Containers</emphasis>
587      </entry>
588    </row>
589    <row>
590      <entry>23.1</entry>
591      <entry>Container requirements</entry>
592      <entry>Y</entry>
593      <entry/>
594    </row>
595    <row>
596      <entry>23.2</entry>
597      <entry>Sequence containers</entry>
598      <entry/>
599      <entry/>
600    </row>
601    <row>
602      <entry>23.2.1</entry>
603      <entry>Class template <code>deque</code></entry>
604      <entry>Y</entry>
605      <entry/>
606    </row>
607    <row>
608      <entry>23.2.2</entry>
609      <entry>Class template <code>list</code></entry>
610      <entry>Y</entry>
611      <entry/>
612    </row>
613    <row>
614      <entry>23.2.3</entry>
615      <entry>Adaptors</entry>
616      <entry/>
617      <entry/>
618    </row>
619    <row>
620      <entry>23.2.3.1</entry>
621      <entry>Class template <code>queue</code></entry>
622      <entry>Y</entry>
623      <entry/>
624    </row>
625    <row>
626      <entry>23.2.3.2</entry>
627      <entry>Class template <code>priority_queue</code></entry>
628      <entry>Y</entry>
629      <entry/>
630    </row>
631    <row>
632      <entry>23.2.3.3</entry>
633      <entry>Class template <code>stack</code></entry>
634      <entry>Y</entry>
635      <entry/>
636    </row>
637    <row>
638      <entry>23.2.4</entry>
639      <entry>Class template <code>vector</code></entry>
640      <entry>Y</entry>
641      <entry/>
642    </row>
643    <row>
644      <entry>23.2.5</entry>
645      <entry>Class <code>vector&lt;bool&gt;</code></entry>
646      <entry>Y</entry>
647      <entry/>
648    </row>
649    <row>
650      <entry>23.3</entry>
651      <entry>Associative containers</entry>
652      <entry/>
653      <entry/>
654    </row>
655    <row>
656      <entry>23.3.1</entry>
657      <entry>Class template <code>map</code></entry>
658      <entry>Y</entry>
659      <entry/>
660    </row>
661    <row>
662      <entry>23.3.2</entry>
663      <entry>Class template <code>multimap</code></entry>
664      <entry>Y</entry>
665      <entry/>
666    </row>
667    <row>
668      <entry>23.3.3</entry>
669      <entry>Class template <code>set</code></entry>
670      <entry>Y</entry>
671      <entry/>
672    </row>
673    <row>
674      <entry>23.3.4</entry>
675      <entry>Class template <code>multiset</code></entry>
676      <entry>Y</entry>
677      <entry/>
678    </row>
679    <row>
680      <entry>
681	<emphasis>24</emphasis>
682      </entry>
683      <entry namest="c2" nameend="c4" align="left">
684	<emphasis>Iterators</emphasis>
685      </entry>
686    </row>
687    <row>
688      <entry>24.1</entry>
689      <entry>Requirements</entry>
690      <entry>Y</entry>
691      <entry/>
692    </row>
693    <row>
694      <entry>24.2</entry>
695      <entry>Header <code>&lt;iterator&gt;</code> synopsis</entry>
696      <entry>Y</entry>
697      <entry/>
698    </row>
699    <row>
700      <entry>24.3</entry>
701      <entry>Iterator primitives</entry>
702      <entry>Y</entry>
703      <entry/>
704    </row>
705    <row>
706      <entry>24.4</entry>
707      <entry>Predefined iterators and Iterator adaptors</entry>
708      <entry/>
709      <entry/>
710    </row>
711    <row>
712      <entry>24.4.1</entry>
713      <entry>Reverse iterators</entry>
714      <entry>Y</entry>
715      <entry/>
716    </row>
717    <row>
718      <entry>24.4.2</entry>
719      <entry>Insert iterators</entry>
720      <entry>Y</entry>
721      <entry/>
722    </row>
723    <row>
724      <entry>24.5</entry>
725      <entry>Stream iterators</entry>
726      <entry/>
727      <entry/>
728    </row>
729    <row>
730      <entry>24.5.1</entry>
731      <entry>Class template <code>istream_iterator</code></entry>
732      <entry>Y</entry>
733      <entry/>
734    </row>
735    <row>
736      <entry>24.5.2</entry>
737      <entry>Class template <code>ostream_iterator</code></entry>
738      <entry>Y</entry>
739      <entry/>
740    </row>
741    <row>
742      <entry>24.5.3</entry>
743      <entry>Class template <code>istreambuf_iterator</code></entry>
744      <entry>Y</entry>
745      <entry/>
746    </row>
747    <row>
748      <entry>24.5.4</entry>
749      <entry>Class template <code>ostreambuf_iterator</code></entry>
750      <entry>Y</entry>
751      <entry/>
752    </row>
753    <row>
754      <entry>
755	<emphasis>25</emphasis>
756      </entry>
757      <entry namest="c2" nameend="c4" align="left">
758	<emphasis>Algorithms</emphasis>
759      </entry>
760    </row>
761    <row>
762      <entry>25.1</entry>
763      <entry>Non-modifying sequence operations</entry>
764      <entry>Y</entry>
765      <entry/>
766    </row>
767    <row>
768      <entry>25.2</entry>
769      <entry>Mutating sequence operations</entry>
770      <entry>Y</entry>
771      <entry/>
772    </row>
773    <row>
774      <entry>25.3</entry>
775      <entry>Sorting and related operations</entry>
776      <entry>Y</entry>
777      <entry/>
778    </row>
779    <row>
780      <entry>25.4</entry>
781      <entry>C library algorithms</entry>
782      <entry>Y</entry>
783      <entry/>
784    </row>
785    <row>
786      <entry>
787      <emphasis>26</emphasis>
788      </entry>
789      <entry namest="c2" nameend="c4" align="left">
790	<emphasis>Numerics</emphasis>
791      </entry>
792    </row>
793    <row>
794      <entry>26.1</entry>
795      <entry>Numeric type requirements</entry>
796      <entry>Y</entry>
797      <entry/>
798    </row>
799    <row>
800      <entry>26.2</entry>
801      <entry>Complex numbers</entry>
802      <entry>Y</entry>
803      <entry/>
804    </row>
805    <row>
806      <entry>26.3</entry>
807      <entry>Numeric arrays</entry>
808      <entry/>
809      <entry/>
810    </row>
811    <row>
812      <entry>26.3.1</entry>
813      <entry>Header <code>&lt;valarray&gt;</code> synopsis</entry>
814      <entry>Y</entry>
815      <entry/>
816    </row>
817    <row>
818      <entry>26.3.2</entry>
819      <entry>Class template <code>valarray</code></entry>
820      <entry>Y</entry>
821      <entry/>
822    </row>
823    <row>
824      <entry>26.3.3</entry>
825      <entry><code>valarray</code> non-member operations</entry>
826      <entry>Y</entry>
827      <entry/>
828    </row>
829    <row>
830      <entry>26.3.4</entry>
831      <entry>Class <code>slice</code></entry>
832      <entry>Y</entry>
833      <entry/>
834    </row>
835    <row>
836      <entry>26.3.5</entry>
837      <entry>Class template <code>slice_array</code></entry>
838      <entry>Y</entry>
839      <entry/>
840    </row>
841    <row>
842      <entry>26.3.6</entry>
843      <entry>Class <code>gslice</code></entry>
844      <entry>Y</entry>
845      <entry/>
846    </row>
847    <row>
848      <entry>26.3.7</entry>
849      <entry>Class template <code>gslice_array</code></entry>
850      <entry>Y</entry>
851      <entry/>
852    </row>
853    <row>
854      <entry>26.3.8</entry>
855      <entry>Class template <code>mask_array</code></entry>
856      <entry>Y</entry>
857      <entry/>
858    </row>
859    <row>
860      <entry>26.3.9</entry>
861      <entry>Class template <code>indirect_array</code></entry>
862      <entry>Y</entry>
863      <entry/>
864    </row>
865    <row>
866      <entry>26.4</entry>
867      <entry>Generalized numeric operations</entry>
868      <entry/>
869      <entry/>
870    </row>
871    <row>
872      <entry>26.4.1</entry>
873      <entry><code>accumulate</code></entry>
874      <entry>Y</entry>
875      <entry/>
876    </row>
877    <row>
878      <entry>26.4.2</entry>
879      <entry><code>inner_product</code></entry>
880      <entry>Y</entry>
881      <entry/>
882    </row>
883    <row>
884      <entry>26.4.3</entry>
885      <entry><code>partial_sum</code></entry>
886      <entry>Y</entry>
887      <entry/>
888    </row>
889    <row>
890      <entry>26.4.4</entry>
891      <entry><code>adjacent_difference</code></entry>
892      <entry>Y</entry>
893      <entry/>
894    </row>
895    <row>
896      <entry>26.4.5</entry>
897      <entry>iota</entry>
898      <entry>Y</entry>
899      <entry/>
900    </row>
901    <row>
902      <entry>26.5</entry>
903      <entry>C Library</entry>
904      <entry>Y</entry>
905      <entry/>
906    </row>
907    <row>
908      <entry>
909	<emphasis>27</emphasis>
910      </entry>
911      <entry namest="c2" nameend="c4" align="left">
912	<emphasis>Input/output</emphasis>
913      </entry>
914    </row>
915    <row>
916      <entry>27.1</entry>
917      <entry>Requirements</entry>
918      <entry>Y</entry>
919      <entry/>
920    </row>
921    <row>
922      <entry>27.2</entry>
923      <entry>Forward declarations</entry>
924      <entry>Y</entry>
925      <entry/>
926    </row>
927    <row>
928      <entry>27.3</entry>
929      <entry>Standard iostream objects</entry>
930      <entry>Y</entry>
931      <entry/>
932    </row>
933    <row>
934      <entry>27.3.1</entry>
935      <entry>Narrow stream objects</entry>
936      <entry>Y</entry>
937      <entry/>
938    </row>
939    <row>
940      <entry>27.3.2</entry>
941      <entry>Wide stream objects</entry>
942      <entry>Y</entry>
943      <entry/>
944    </row>
945    <row>
946      <entry>27.4</entry>
947      <entry>Iostreams base classes</entry>
948      <entry>Y</entry>
949      <entry/>
950    </row>
951    <row>
952      <entry>27.5</entry>
953      <entry>Stream buffers</entry>
954      <entry>Y</entry>
955      <entry/>
956    </row>
957    <row>
958      <entry>27.6</entry>
959      <entry>Formatting and manipulators</entry>
960      <entry>Y</entry>
961      <entry/>
962    </row>
963    <row>
964      <entry>27.7</entry>
965      <entry>String-based streams</entry>
966      <entry>Y</entry>
967      <entry/>
968    </row>
969    <row>
970      <entry>27.8</entry>
971      <entry>File-based streams</entry>
972      <entry>Y</entry>
973      <entry/>
974    </row>
975    <row>
976      <entry>
977      	<emphasis>Appendix D</emphasis>
978      </entry>
979      <entry namest="c2" nameend="c4" align="left">
980	<emphasis>Compatibility features</emphasis>
981      </entry>
982    </row>
983    <row>
984      <entry>D.1</entry>
985      <entry>Increment operator with bool operand</entry>
986      <entry/>
987      <entry/>
988    </row>
989    <row>
990      <entry>D.2</entry>
991      <entry><code>static</code> keyword</entry>
992      <entry/>
993      <entry/>
994    </row>
995    <row>
996      <entry>D.3</entry>
997      <entry>Access declarations</entry>
998      <entry/>
999      <entry/>
1000    </row>
1001    <row>
1002      <entry>D.4</entry>
1003      <entry>Implicit conversion from const strings</entry>
1004      <entry/>
1005      <entry/>
1006    </row>
1007    <row>
1008      <entry>D.5</entry>
1009      <entry>C standard library headers</entry>
1010      <entry/>
1011      <entry/>
1012    </row>
1013    <row>
1014      <entry>D.6</entry>
1015      <entry>Old iostreams members</entry>
1016      <entry/>
1017      <entry/>
1018    </row>
1019    <row>
1020      <entry>D.7</entry>
1021      <entry>char* streams</entry>
1022      <entry/>
1023      <entry/>
1024    </row>
1025
1026  </tbody>
1027</tgroup>
1028</table>
1029</section>
1030
1031<section xml:id="iso.1998.specific" xreflabel="Implementation Specific"><info><title>Implementation Specific Behavior</title></info>
1032
1033
1034   <para>
1035     The ISO standard defines the following phrase:
1036   </para>
1037   <blockquote>
1038     <variablelist>
1039     <varlistentry>
1040       <term>
1041	 <code>[1.3.5] implementation-defined behavior</code>
1042       </term>
1043       <listitem>
1044	 <para>
1045	 Behavior, for a well-formed program construct and correct data, that
1046	 depends on the implementation <emphasis>and that each implementation
1047	 shall document</emphasis>.
1048	 </para>
1049       </listitem>
1050     </varlistentry>
1051     </variablelist>
1052   </blockquote>
1053   <para>
1054     We do so here, for the C++ library only.  Behavior of the
1055     compiler, linker, runtime loader, and other elements of "the
1056     implementation" are documented elsewhere.  Everything listed
1057     in Annex B, Implementation Qualities, are also part of the
1058     compiler, not the library.
1059   </para>
1060   <para>
1061     For each entry, we give the section number of the standard, when
1062     applicable.  This list is probably incomplet and inkorrekt.
1063   </para>
1064   <para>
1065     <emphasis>[1.9]/11 #3</emphasis> If <code>isatty(3)</code> is true, then
1066      interactive stream support is implied.
1067   </para>
1068   <para>
1069     <emphasis>[17.4.4.5]</emphasis> Non-reentrant functions are probably best
1070      discussed in the various sections on multithreading (see above).
1071   </para>
1072   <!-- [17.4.4.8]/3 says any function that doesn't have an exception-spec
1073	can throw whatever we want; see also its footnote.  Let's list those
1074	in the sections where the function itself occurs.
1075   -->
1076   <para><emphasis>[18.1]/4</emphasis> The type of <code>NULL</code> is described
1077      under <link linkend="std.support.types.null">Support</link>.
1078   </para>
1079   <para><emphasis>[18.3]/8</emphasis> Even though it's listed in the library
1080      sections, libstdc++ has zero control over what the cleanup code hands
1081      back to the runtime loader.  Talk to the compiler people.  :-)
1082   </para>
1083   <para><emphasis>[18.4.2.1]/5</emphasis> (bad_alloc),
1084      <emphasis>[18.5.2]/5</emphasis> (bad_cast),
1085      <emphasis>[18.5.3]/5</emphasis> (bad_typeid),
1086      <emphasis>[18.6.1]/8</emphasis> (exception),
1087      <emphasis>[18.6.2.1]/5</emphasis> (bad_exception):  The <code>what()</code>
1088      member function of class <code>std::exception</code>, and these other
1089      classes publicly derived from it, returns the name of the
1090      class, e.g. <literal>"std::bad_alloc"</literal>.
1091   </para>
1092   <para><emphasis>[18.5.1]/7</emphasis> The return value of
1093      <code>std::type_info::name()</code> is the mangled type name.
1094      You will need to call <code>c++filt</code> and pass the names as
1095      command-line parameters to demangle them, or call a
1096      <link linkend="manual.ext.demangle">runtime demangler function</link>.
1097   </para>
1098   <para><emphasis>[20.1.5]/5</emphasis> <emphasis>"Implementors are encouraged to
1099      supply libraries that can accept allocators that encapsulate more
1100      general memory models and that support non-equal instances.  In such
1101      implementations, any requirements imposed on allocators by containers
1102      beyond those requirements that appear in Table 32, and the semantics
1103      of containers and algorithms when allocator instances compare
1104      non-equal, are implementation-defined."</emphasis>  There is experimental
1105      support for non-equal allocators in the standard containers in C++98
1106      mode. There are no additional requirements on allocators. It is undefined
1107      behaviour to swap two containers if their allocators are not equal.
1108   </para>
1109   <para><emphasis>[21.1.3.1]/3,4</emphasis>,
1110      <emphasis>[21.1.3.2]/2</emphasis>,
1111      <emphasis>[21.3]/6 basic_string::iterator, basic_string::const_iterator</emphasis>,
1112      <emphasis>[23.*]'s foo::iterator</emphasis>,
1113      <emphasis>[27.*]'s foo::*_type</emphasis>,
1114      <emphasis>others...</emphasis>
1115      Nope, these types are called implementation-defined because you
1116      shouldn't be taking advantage of their underlying types.  Listing them
1117      here would defeat the purpose.  :-)
1118   </para>
1119   <para><emphasis>[21.1.3.1]/5</emphasis> I don't really know about
1120      the <type>mbstate_t</type> stuff... see
1121      the <link linkend="std.localization.facet.codecvt"><code>codecvt</code>
1122      notes</link> for what does exist.
1123   </para>
1124   <para><emphasis>[22.*]</emphasis> Anything and everything we have on locale
1125      implementation will be described under
1126      <link linkend="std.localization.locales.locale">Localization</link>.
1127   </para>
1128   <para><emphasis>[23.*]</emphasis> All of the containers in this clause
1129     define <type>size_type</type> as <type>std::size_t</type> and
1130     <type>difference_type</type> as <type>std::ptrdiff_t</type>.
1131   </para>
1132   <para><emphasis>[26.2.8]/9</emphasis> I have no idea what
1133      <code>complex&lt;T&gt;</code>'s <code>pow(0,0)</code> returns.
1134   </para>
1135   <para><emphasis>[27.4.2.4]/2</emphasis> Calling
1136      <code>std::ios_base::sync_with_stdio</code> after I/O has already been
1137      performed on the standard stream objects will
1138      flush the buffers, and <!-- this line might go away -->
1139      destroy and recreate the underlying buffer instances.  Whether or not
1140      the previously-written I/O is destroyed in this process depends mostly
1141      on the <code>--enable-libio</code> choice:  for stdio, if the written
1142      data is already in the stdio buffer, the data may be completely safe!
1143   </para>
1144   <para><emphasis>[27.6.1.1.2]</emphasis>,
1145      <emphasis>[27.6.2.3]</emphasis> The I/O sentry ctor and dtor can perform
1146      additional work than the minimum required.  We are not currently taking
1147      advantage of this yet.
1148   </para>
1149   <para><emphasis>[27.7.1.3]/16</emphasis>,
1150      <emphasis>[27.8.1.4]/10</emphasis>
1151      The effects of <code>pubsetbuf/setbuf</code> are described in the
1152      <link linkend="std.io">Input and Output</link> chapter.
1153   </para>
1154   <para><emphasis>[27.8.1.4]/16</emphasis> Calling <code>fstream::sync</code> when
1155      a get area exists will... whatever <code>fflush()</code> does, I think.
1156   </para>
1157
1158</section>
1159
1160</section>
1161