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index.html: Explain libsupc++, mention 'long long' bugfixes on Solaris.

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2001-11-07  Phil Edwards  <pme@gcc.gnu.org>

	* docs/html/faq/index.html:  Explain libsupc++, mention 'long long'
	bugfixes on Solaris.
	* docs/html/faq/index.txt:  Regenerate.

From-SVN: r46828
This commit is contained in:
Phil Edwards 2001-11-07 16:47:39 +00:00
parent 2a6f0eca17
commit 64ef1ee2d5
3 changed files with 448 additions and 315 deletions
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6
libstdc++-v3/ChangeLog
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@ -1,3 +1,9 @@
2001-11-07 Phil Edwards <pme@gcc.gnu.org>
* docs/html/faq/index.html: Explain libsupc++, mention 'long long'
bugfixes on Solaris.
* docs/html/faq/index.txt: Regenerate.
2001-11-06 Phil Edwards <pme@gcc.gnu.org> 2001-11-06 Phil Edwards <pme@gcc.gnu.org>
* acinclude.m4 (GLIBCPP_ENABLE_LONG_LONG): Run the test in * acinclude.m4 (GLIBCPP_ENABLE_LONG_LONG): Run the test in

69
libstdc++-v3/docs/html/faq/index.html
View file

@ -45,6 +45,7 @@ http://gcc.gnu.org/onlinedocs/libstdc++/faq/</a>.</p>
<li><a href="#2_3">What is this CVS thing that you keep <li><a href="#2_3">What is this CVS thing that you keep
mentioning?</a> mentioning?</a>
<li><a href="#2_4">How do I know if it works?</a> <li><a href="#2_4">How do I know if it works?</a>
<li><a href="#2_5">This library is HUGE! And what's libsupc++?</a>
</ol> </ol>
<li><a href="#3_0">Platform-Specific Issues</a> <li><a href="#3_0">Platform-Specific Issues</a>
@ -53,6 +54,7 @@ http://gcc.gnu.org/onlinedocs/libstdc++/faq/</a>.</p>
favorite compiler&gt;?</a> favorite compiler&gt;?</a>
<li><a href="#3_2">[removed]</a> <li><a href="#3_2">[removed]</a>
<li><a href="#3_3">Building under DEC OSF kills the assembler</a> <li><a href="#3_3">Building under DEC OSF kills the assembler</a>
<li><a href="#3_4">I can't use 'long long' on Solaris</a>
</ol> </ol>
<li><a href="#4_0">Known Bugs and Non-Bugs</a> <li><a href="#4_0">Known Bugs and Non-Bugs</a>
@ -320,6 +322,56 @@ which is no longer available, thanks deja...-->
<strong>please</strong> write up your idea and send it to the list! <strong>please</strong> write up your idea and send it to the list!
</p> </p>
<hr>
<h2><a name="2_5">2.4 This library is HUGE! And what's libsupc++?</a></h2>
<p>Usually the size of libraries on disk isn't noticeable. When a
link editor (or simply &quot;linker&quot;) pulls things from a
static archive library, only the necessary object files are copied
into your executable, not the entire library. Unfortunately, even
if you only need a single function or variable from an object file,
the entire object file is extracted. (There's nothing unique to C++
or libstdc++-v3 about this; it's just common behavior, given here
for background reasons.)
</p>
<p>Some of the object files which make up libstdc++.a are rather large.
If you create a statically-linked executable with
<code> -static</code>, those large object files are suddenly part
of your executable. Historically the best way around this was to
only place a very few functions (often only a single one) in each
source/object file; then extracting a single function is the same
as extracting a single .o file. For libstdc++-v3 this is only
possible to a certain extent; the object files in question contain
template classes and template functions, pre-instantiated, and
splitting those up causes severe maintenance headaches.
</p>
<p>It's not a bug, and it's not really a problem. Nevertheless, some
people don't like it, so here are two pseudo-solutions:
</p>
<p>If the only functions from libstdc++.a which you need are language
support functions (those listed in
<a href="../18_support/howto.html">clause 18</a> of the standard,
e.g., <code>new</code> and <code>delete</code>), then try linking
against <code>libsupc++.a</code> (usually specifying
<code>-lsupc++</code> when calling g++ for the final link step will
do it). This library contains only those support routines, one per
object file. But if you are using anything from the rest of the
library, such as IOStreams or vectors, then you'll still need
pieces from <code>libstdc++.a</code>.
</p>
<p>The second method is one we hope to incorporate into the library
build process. Some platforms can place each function and variable
into its own section in a .o file. The GNU linker can then perform
garbage collection on unused sections; this reduces the situation
to only copying needed functions into the executable, as before,
but all happens automatically.
</p>
<p>Unfortunately the garbage collection in GNU ld is buggy; sections
(corresponding to functions and variables) which <em>are</em> used
are mistakenly removed, leading to horrible crashes when your
executable starts up. For the time being, this feature is not used
when building the library.
</p>
<hr> <hr>
<h1><a name="3_0">3.0 Platform-Specific Issues</a></h1> <h1><a name="3_0">3.0 Platform-Specific Issues</a></h1>
<h2><a name="3_1">3.1 Can libstdc++-v3 be used with &lt;my <h2><a name="3_1">3.1 Can libstdc++-v3 be used with &lt;my
@ -363,6 +415,18 @@ which is no longer available, thanks deja...-->
these two pseudos would win praise and accolades from many. these two pseudos would win praise and accolades from many.
</p> </p>
<hr>
<h2><a name="3_4">3.4 I can't use 'long long' on Solaris</a></h2>
<p>By default we try to support the C99 <code>long long</code> type.
This requires that certain functions from your C library be present.
</p>
<p>Up through release 3.0.2 the tests performed were too general, and
this feature was disabled when it did not need to be. The most
commonly reported platform affected was Solaris.
</p>
<p>This has been fixed for 3.0.3 and onwards.
</p>
<hr> <hr>
<h1><a name="4_0">4.0 Known Bugs and Non-Bugs</a></h1> <h1><a name="4_0">4.0 Known Bugs and Non-Bugs</a></h1>
<em>Note that this section can get rapdily outdated -- such is the <em>Note that this section can get rapdily outdated -- such is the
@ -380,10 +444,9 @@ which is no longer available, thanks deja...-->
specifically the part about configuring in a separate build directory, specifically the part about configuring in a separate build directory,
and how strongly recommended it is. Building in the source directory and how strongly recommended it is. Building in the source directory
is fragile, is rarely tested, and tends to break, as in this case. is fragile, is rarely tested, and tends to break, as in this case.
Work has already gone into the source tree to make this less painful This was fixed for 3.0.2.
for the next release.
</p> </p>
<p><strong>Please do not report this as a bug. We know about it.</strong> <p><strong>Please do not report these as bugs. We know about them.</strong>
Reporting this -- or any other problem that's already been fixed -- Reporting this -- or any other problem that's already been fixed --
hinders the development of GCC, because we have to take time to hinders the development of GCC, because we have to take time to
respond to your report. Thank you. respond to your report. Thank you.

348
libstdc++-v3/docs/html/faq/index.txt
View file

@ -24,32 +24,34 @@
2. [15][removed] 2. [15][removed]
3. [16]What is this CVS thing that you keep mentioning? 3. [16]What is this CVS thing that you keep mentioning?
4. [17]How do I know if it works? 4. [17]How do I know if it works?
3. [18]Platform-Specific Issues 5. [18]This library is HUGE! And what's libsupc++?
1. [19]Can libstdc++-v3 be used with <my favorite compiler>? 3. [19]Platform-Specific Issues
2. [20][removed] 1. [20]Can libstdc++-v3 be used with <my favorite compiler>?
3. [21]Building under DEC OSF kills the assembler 2. [21][removed]
4. [22]Known Bugs and Non-Bugs 3. [22]Building under DEC OSF kills the assembler
1. [23]What works already? 4. [23]I can't use 'long long' on Solaris
2. [24]Bugs in gcc/g++ (not libstdc++-v3) 4. [24]Known Bugs and Non-Bugs
3. [25]Bugs in the C++ language/lib specification 1. [25]What works already?
4. [26]Things in libstdc++ that look like bugs 2. [26]Bugs in gcc/g++ (not libstdc++-v3)
o [27]reopening a stream fails 3. [27]Bugs in the C++ language/lib specification
o [28]-Weffc++ complains too much 4. [28]Things in libstdc++ that look like bugs
o [29]"ambiguous overloads" after including an old-style o [29]reopening a stream fails
o [30]-Weffc++ complains too much
o [31]"ambiguous overloads" after including an old-style
header header
o [30]The g++-3 headers are not ours o [32]The g++-3 headers are not ours
o [31]compilation errors from streambuf.h o [33]compilation errors from streambuf.h
o [32]errors about *Cconcept and constraints in the STL... o [34]errors about *Cconcept and constraints in the STL...
5. [33]Aw, that's easy to fix! 5. [35]Aw, that's easy to fix!
5. [34]Miscellaneous 5. [36]Miscellaneous
1. [35]string::iterator is not char*; vector<T>::iterator is not 1. [37]string::iterator is not char*; vector<T>::iterator is not
T* T*
2. [36]What's next after libstdc++-v3? 2. [38]What's next after libstdc++-v3?
3. [37]What about the STL from SGI? 3. [39]What about the STL from SGI?
4. [38]Extensions and Backward Compatibility 4. [40]Extensions and Backward Compatibility
5. [39][removed] 5. [41][removed]
6. [40]Is libstdc++-v3 thread-safe? 6. [42]Is libstdc++-v3 thread-safe?
7. [41]How do I get a copy of the ISO C++ Standard? 7. [43]How do I get a copy of the ISO C++ Standard?
_________________________________________________________________ _________________________________________________________________
1.0 General Information 1.0 General Information
@ -60,13 +62,13 @@
project to implement the ISO 14882 Standard C++ library as described project to implement the ISO 14882 Standard C++ library as described
in chapters 17 through 27 and annex D. As the library reaches stable in chapters 17 through 27 and annex D. As the library reaches stable
plateaus, it is captured in a snapshot and released. The current plateaus, it is captured in a snapshot and released. The current
release is [42]the eleventh snapshot. For those who want to see release is [44]the eleventh snapshot. For those who want to see
exactly how far the project has come, or just want the latest exactly how far the project has come, or just want the latest
bleeding-edge code, the up-to-date source is available over anonymous bleeding-edge code, the up-to-date source is available over anonymous
CVS, and can even be browsed over the Web (see below). CVS, and can even be browsed over the Web (see below).
A more formal description of the V3 goals can be found in the official A more formal description of the V3 goals can be found in the official
[43]design document. [45]design document.
_________________________________________________________________ _________________________________________________________________
1.2 Why should I use libstdc++? 1.2 Why should I use libstdc++?
@ -79,8 +81,8 @@
The GNU C/C++/FORTRAN/<pick-a-language> compiler (gcc, g++, etc) is The GNU C/C++/FORTRAN/<pick-a-language> compiler (gcc, g++, etc) is
widely considered to be one of the leading compilers in the world. Its widely considered to be one of the leading compilers in the world. Its
development has recently been taken over by the [44]GCC team. All of development has recently been taken over by the [46]GCC team. All of
the rapid development and near-legendary [45]portability that are the the rapid development and near-legendary [47]portability that are the
hallmarks of an open-source project are being applied to libstdc++. hallmarks of an open-source project are being applied to libstdc++.
That means that all of the Standard classes and functions (such as That means that all of the Standard classes and functions (such as
@ -98,16 +100,16 @@
Development and discussion is held on the libstdc++ mailing list. Development and discussion is held on the libstdc++ mailing list.
Subscribing to the list, or searching the list archives, is open to Subscribing to the list, or searching the list archives, is open to
everyone. You can read instructions for doing so on the [46]homepage. everyone. You can read instructions for doing so on the [48]homepage.
If you have questions, ideas, code, or are just curious, sign up! If you have questions, ideas, code, or are just curious, sign up!
_________________________________________________________________ _________________________________________________________________
1.4 How do I get libstdc++? 1.4 How do I get libstdc++?
The eleventh (and latest) snapshot of libstdc++-v3 is [47]available The eleventh (and latest) snapshot of libstdc++-v3 is [49]available
via ftp. The filename is libstdc++-2.92.tar.gz. via ftp. The filename is libstdc++-2.92.tar.gz.
The [48]homepage has instructions for retrieving the latest CVS The [50]homepage has instructions for retrieving the latest CVS
sources, and for browsing the CVS sources over the web. sources, and for browsing the CVS sources over the web.
The subset commonly known as the Standard Template Library (chapters The subset commonly known as the Standard Template Library (chapters
@ -123,7 +125,7 @@
1.6 How do I contribute to the effort? 1.6 How do I contribute to the effort?
Here is [49]a page devoted to this topic. Subscribing to the mailing Here is [51]a page devoted to this topic. Subscribing to the mailing
list (see above, or the homepage) is a very good idea if you have list (see above, or the homepage) is a very good idea if you have
something to contribute, or if you have spare time and want to help. something to contribute, or if you have spare time and want to help.
Contributions don't have to be in the form of source code; anybody who Contributions don't have to be in the form of source code; anybody who
@ -158,11 +160,11 @@
extracted into an updated utilities library, but nobody has stated extracted into an updated utilities library, but nobody has stated
such a project yet. such a project yet.
(The [50]Boost site houses free C++ libraries that do varying things, (The [52]Boost site houses free C++ libraries that do varying things,
and happened to be started by members of the Standards Committee. and happened to be started by members of the Standards Committee.
Certain "useful stuff" classes will probably migrate there.) Certain "useful stuff" classes will probably migrate there.)
For the bold and/or desperate, the [51]GCC FAQ describes where to find For the bold and/or desperate, the [53]GCC FAQ describes where to find
the last libg++ source. the last libg++ source.
_________________________________________________________________ _________________________________________________________________
@ -172,16 +174,16 @@
remains unanswered, then just ask the mailing list. At present, you do remains unanswered, then just ask the mailing list. At present, you do
not need to be subscribed to the list to send a message to it. More not need to be subscribed to the list to send a message to it. More
information is available on the homepage (including how to browse the information is available on the homepage (including how to browse the
list archives); to send to the list, use [52]libstdc++@gcc.gnu.org. list archives); to send to the list, use [54]libstdc++@gcc.gnu.org.
If you have a question that you think should be included here, or if If you have a question that you think should be included here, or if
you have a question about a question/answer here, contact [53]Phil you have a question about a question/answer here, contact [55]Phil
Edwards or [54]Gabriel Dos Reis. Edwards or [56]Gabriel Dos Reis.
_________________________________________________________________ _________________________________________________________________
1.9 What are the license terms for libstdc++-v3? 1.9 What are the license terms for libstdc++-v3?
See [55]our license description for these and related questions. See [57]our license description for these and related questions.
_________________________________________________________________ _________________________________________________________________
2.0 Installation 2.0 Installation
@ -198,13 +200,13 @@
* The GNU Autotools are needed if you are messing with the configury * The GNU Autotools are needed if you are messing with the configury
or makefiles. or makefiles.
The file [56]documentation.html provides a good overview of the steps The file [58]documentation.html provides a good overview of the steps
necessary to build, install, and use the library. Instructions for necessary to build, install, and use the library. Instructions for
configuring the library with new flags such as --enable-threads are configuring the library with new flags such as --enable-threads are
there also, as well as patches and instructions for working with GCC there also, as well as patches and instructions for working with GCC
2.95. 2.95.
The top-level install.html and [57]RELEASE-NOTES files contain the The top-level install.html and [59]RELEASE-NOTES files contain the
exact build and installation instructions. You may wish to browse exact build and installation instructions. You may wish to browse
those files over CVSweb ahead of time to get a feel for what's those files over CVSweb ahead of time to get a feel for what's
required. RELEASE-NOTES is located in the ".../docs/17_intro/" required. RELEASE-NOTES is located in the ".../docs/17_intro/"
@ -221,8 +223,8 @@
The Concurrent Versions System is one of several revision control The Concurrent Versions System is one of several revision control
packages. It was selected for GNU projects because it's free (speech), packages. It was selected for GNU projects because it's free (speech),
free (beer), and very high quality. The [58]CVS entry in the GNU free (beer), and very high quality. The [60]CVS entry in the GNU
software catalogue has a better description as well as a [59]link to software catalogue has a better description as well as a [61]link to
the makers of CVS. the makers of CVS.
The "anonymous client checkout" feature of CVS is similar to anonymous The "anonymous client checkout" feature of CVS is similar to anonymous
@ -245,6 +247,54 @@
If you find bugs in the testsuite programs themselves, or if you think If you find bugs in the testsuite programs themselves, or if you think
of a new test program that should be added to the suite, please write of a new test program that should be added to the suite, please write
up your idea and send it to the list! up your idea and send it to the list!
_________________________________________________________________
2.4 This library is HUGE! And what's libsupc++?
Usually the size of libraries on disk isn't noticeable. When a link
editor (or simply "linker") pulls things from a static archive
library, only the necessary object files are copied into your
executable, not the entire library. Unfortunately, even if you only
need a single function or variable from an object file, the entire
object file is extracted. (There's nothing unique to C++ or
libstdc++-v3 about this; it's just common behavior, given here for
background reasons.)
Some of the object files which make up libstdc++.a are rather large.
If you create a statically-linked executable with -static, those large
object files are suddenly part of your executable. Historically the
best way around this was to only place a very few functions (often
only a single one) in each source/object file; then extracting a
single function is the same as extracting a single .o file. For
libstdc++-v3 this is only possible to a certain extent; the object
files in question contain template classes and template functions,
pre-instantiated, and splitting those up causes severe maintenance
headaches.
It's not a bug, and it's not really a problem. Nevertheless, some
people don't like it, so here are two pseudo-solutions:
If the only functions from libstdc++.a which you need are language
support functions (those listed in [62]clause 18 of the standard,
e.g., new and delete), then try linking against libsupc++.a (usually
specifying -lsupc++ when calling g++ for the final link step will do
it). This library contains only those support routines, one per object
file. But if you are using anything from the rest of the library, such
as IOStreams or vectors, then you'll still need pieces from
libstdc++.a.
The second method is one we hope to incorporate into the library build
process. Some platforms can place each function and variable into its
own section in a .o file. The GNU linker can then perform garbage
collection on unused sections; this reduces the situation to only
copying needed functions into the executable, as before, but all
happens automatically.
Unfortunately the garbage collection in GNU ld is buggy; sections
(corresponding to functions and variables) which are used are
mistakenly removed, leading to horrible crashes when your executable
starts up. For the time being, this feature is not used when building
the library.
_________________________________________________________________ _________________________________________________________________
3.0 Platform-Specific Issues 3.0 Platform-Specific Issues
@ -281,9 +331,21 @@
install GNU as and arrange for the GCC build to use it (or merge the install GNU as and arrange for the GCC build to use it (or merge the
sources and build it during the bootstrap). sources and build it during the bootstrap).
Anyone who [60]knows the DEC assembler well enough to provide the Anyone who [63]knows the DEC assembler well enough to provide the
equivalent of these two pseudos would win praise and accolades from equivalent of these two pseudos would win praise and accolades from
many. many.
_________________________________________________________________
3.4 I can't use 'long long' on Solaris
By default we try to support the C99 long long type. This requires
that certain functions from your C library be present.
Up through release 3.0.2 the tests performed were too general, and
this feature was disabled when it did not need to be. The most
commonly reported platform affected was Solaris.
This has been fixed for 3.0.3 and onwards.
_________________________________________________________________ _________________________________________________________________
4.0 Known Bugs and Non-Bugs 4.0 Known Bugs and Non-Bugs
@ -297,14 +359,13 @@
include/Makefile, resulting in files like gthr.h and gthr-single.h not include/Makefile, resulting in files like gthr.h and gthr-single.h not
being found. being found.
Please read [61]the configuration instructions for GCC, specifically Please read [64]the configuration instructions for GCC, specifically
the part about configuring in a separate build directory, and how the part about configuring in a separate build directory, and how
strongly recommended it is. Building in the source directory is strongly recommended it is. Building in the source directory is
fragile, is rarely tested, and tends to break, as in this case. Work fragile, is rarely tested, and tends to break, as in this case. This
has already gone into the source tree to make this less painful for was fixed for 3.0.2.
the next release.
Please do not report this as a bug. We know about it. Reporting this Please do not report these as bugs. We know about them. Reporting this
-- or any other problem that's already been fixed -- hinders the -- or any other problem that's already been fixed -- hinders the
development of GCC, because we have to take time to respond to your development of GCC, because we have to take time to respond to your
report. Thank you. report. Thank you.
@ -350,17 +411,17 @@ New:
4.3 Bugs in the C++ language/lib specification 4.3 Bugs in the C++ language/lib specification
Yes, unfortunately, there are some. In a [62]message to the list, Yes, unfortunately, there are some. In a [65]message to the list,
Nathan Myers announced that he has started a list of problems in the Nathan Myers announced that he has started a list of problems in the
ISO C++ Standard itself, especially with regard to the chapters that ISO C++ Standard itself, especially with regard to the chapters that
concern the library. The list itself is [63]posted on his website. concern the library. The list itself is [66]posted on his website.
Developers who are having problems interpreting the Standard may wish Developers who are having problems interpreting the Standard may wish
to consult his notes. to consult his notes.
For those people who are not part of the ISO Library Group (i.e., For those people who are not part of the ISO Library Group (i.e.,
nearly all of us needing to read this page in the first place :-), a nearly all of us needing to read this page in the first place :-), a
public list of the library defects is occasionally published [64]here. public list of the library defects is occasionally published [67]here.
Some of these have resulted in [65]code changes. Some of these have resulted in [68]code changes.
_________________________________________________________________ _________________________________________________________________
4.4 Things in libstdc++ that look like bugs 4.4 Things in libstdc++ that look like bugs
@ -393,7 +454,7 @@ New:
state on the previous file. The reason is that the state flags are not state on the previous file. The reason is that the state flags are not
cleared on a successful call to open(). The standard unfortunately did cleared on a successful call to open(). The standard unfortunately did
not specify behavior in this case, and to everybody's great sorrow, not specify behavior in this case, and to everybody's great sorrow,
the [66]proposed LWG resolution (see DR #22) is to leave the flags the [69]proposed LWG resolution (see DR #22) is to leave the flags
unchanged. You must insert a call to fs.clear() between the calls to unchanged. You must insert a call to fs.clear() between the calls to
close() and open(), and then everything will work like we all expect close() and open(), and then everything will work like we all expect
it to work. it to work.
@ -403,14 +464,14 @@ New:
same namespace as other comparison functions (e.g., 'using' them and same namespace as other comparison functions (e.g., 'using' them and
the <iterator> header), then you will suddenly be faced with huge the <iterator> header), then you will suddenly be faced with huge
numbers of ambiguity errors. This was discussed on the -v3 list; numbers of ambiguity errors. This was discussed on the -v3 list;
Nathan Myers [67]sums things up here. Nathan Myers [70]sums things up here.
The g++-3 headers are not ours The g++-3 headers are not ours
If you have found an extremely broken header file which is causing If you have found an extremely broken header file which is causing
problems for you, look carefully before submitting a "high" priority problems for you, look carefully before submitting a "high" priority
bug report (which you probably shouldn't do anyhow; see the last bug report (which you probably shouldn't do anyhow; see the last
paragraph of the page describing [68]the GCC bug database). paragraph of the page describing [71]the GCC bug database).
If the headers are in ${prefix}/include/g++-3, then you are using the If the headers are in ${prefix}/include/g++-3, then you are using the
old libstdc++-v2 library, which is nonstandard and unmaintained. Do old libstdc++-v2 library, which is nonstandard and unmaintained. Do
@ -418,7 +479,7 @@ New:
Currently our header files are installed in ${prefix}/include/g++-v3 Currently our header files are installed in ${prefix}/include/g++-v3
(see the 'v'?). This may change with the next release of GCC, as it (see the 'v'?). This may change with the next release of GCC, as it
may be too confusing, but [69]the question has not yet been decided. may be too confusing, but [72]the question has not yet been decided.
glibc If you're on a GNU/Linux system and have just upgraded to glibc glibc If you're on a GNU/Linux system and have just upgraded to glibc
2.2, but are still using gcc 2.95.2, then you should have read the 2.2, but are still using gcc 2.95.2, then you should have read the
@ -431,7 +492,7 @@ type has changed in glibc 2.2. The patch is at
http://clisp.cons.org/~haible/gccinclude-glibc-2.2-compat.diff http://clisp.cons.org/~haible/gccinclude-glibc-2.2-compat.diff
Note that 2.95.x shipped with the [70]old v2 library which is no Note that 2.95.x shipped with the [73]old v2 library which is no
longer maintained. Also note that gcc 2.95.3 fixes this problem, but longer maintained. Also note that gcc 2.95.3 fixes this problem, but
requires a separate patch for libstdc++-v3. requires a separate patch for libstdc++-v3.
@ -444,23 +505,23 @@ http://clisp.cons.org/~haible/gccinclude-glibc-2.2-compat.diff
visibility, or you just plain forgot, etc). visibility, or you just plain forgot, etc).
More information, including how to optionally enable/disable the More information, including how to optionally enable/disable the
checks, is available [71]here. checks, is available [74]here.
_________________________________________________________________ _________________________________________________________________
4.5 Aw, that's easy to fix! 4.5 Aw, that's easy to fix!
If you have found a bug in the library and you think you have a If you have found a bug in the library and you think you have a
working fix, then send it in! The main GCC site has a page on working fix, then send it in! The main GCC site has a page on
[72]submitting patches that covers the procedure, but for libstdc++ [75]submitting patches that covers the procedure, but for libstdc++
you should also send the patch to our mailing list in addition to the you should also send the patch to our mailing list in addition to the
GCC patches mailing list. The libstdc++ [73]contributors' page also GCC patches mailing list. The libstdc++ [76]contributors' page also
talks about how to submit patches. talks about how to submit patches.
In addition to the description, the patch, and the ChangeLog entry, it In addition to the description, the patch, and the ChangeLog entry, it
is a Good Thing if you can additionally create a small test program to is a Good Thing if you can additionally create a small test program to
test for the presence of the bug that your patch fixes. Bugs have a test for the presence of the bug that your patch fixes. Bugs have a
way of being reintroduced; if an old bug creeps back in, it will be way of being reintroduced; if an old bug creeps back in, it will be
caught immediately by the [74]testsuite -- but only if such a test caught immediately by the [77]testsuite -- but only if such a test
exists. exists.
_________________________________________________________________ _________________________________________________________________
@ -494,7 +555,7 @@ http://clisp.cons.org/~haible/gccinclude-glibc-2.2-compat.diff
libstdc++. Some of that is already happening, see 4.2. Some of libstdc++. Some of that is already happening, see 4.2. Some of
those changes are being predicted by the library maintainers, and those changes are being predicted by the library maintainers, and
we add code to the library based on what the current proposed we add code to the library based on what the current proposed
resolution specifies. Those additions are listed in [75]the resolution specifies. Those additions are listed in [78]the
extensions page. extensions page.
2. Performance tuning. Lots of performance tuning. This too is 2. Performance tuning. Lots of performance tuning. This too is
already underway for post-3.0 releases, starting with memory already underway for post-3.0 releases, starting with memory
@ -510,13 +571,13 @@ http://clisp.cons.org/~haible/gccinclude-glibc-2.2-compat.diff
type from C99.) Bugfixes and rewrites (to improve or fix thread type from C99.) Bugfixes and rewrites (to improve or fix thread
safety, for instance) will of course be a continuing task. safety, for instance) will of course be a continuing task.
[76]This question about the next libstdc++ prompted some brief but [79]This question about the next libstdc++ prompted some brief but
interesting [77]speculation. interesting [80]speculation.
_________________________________________________________________ _________________________________________________________________
5.3 What about the STL from SGI? 5.3 What about the STL from SGI?
The [78]STL from SGI, version 3.3, was the most recent merge of the The [81]STL from SGI, version 3.3, was the most recent merge of the
STL codebase. The code in libstdc++ contains many fixes and changes, STL codebase. The code in libstdc++ contains many fixes and changes,
and it is very likely that the SGI code is no longer under active and it is very likely that the SGI code is no longer under active
development. We expect that no future merges will take place. development. We expect that no future merges will take place.
@ -537,7 +598,7 @@ http://clisp.cons.org/~haible/gccinclude-glibc-2.2-compat.diff
#include <ext/hash_map> #include <ext/hash_map>
Extensions to the library have [79]their own page. Extensions to the library have [82]their own page.
_________________________________________________________________ _________________________________________________________________
5.5 [removed] 5.5 [removed]
@ -585,8 +646,8 @@ a
both read and write access to objects; do not assume that two threads both read and write access to objects; do not assume that two threads
may read a shared standard container at the same time. may read a shared standard container at the same time.
See chapters [80]17 (library introduction), [81]23 (containers), and See chapters [83]17 (library introduction), [84]23 (containers), and
[82]27 (I/O) for more information. [85]27 (I/O) for more information.
_________________________________________________________________ _________________________________________________________________
5.7 How do I get a copy of the ISO C++ Standard? 5.7 How do I get a copy of the ISO C++ Standard?
@ -597,16 +658,16 @@ a
their two-meeting commitment for voting rights, may get a copy of the their two-meeting commitment for voting rights, may get a copy of the
standard from their respective national standards organization. In the standard from their respective national standards organization. In the
USA, this national standards organization is ANSI and their website is USA, this national standards organization is ANSI and their website is
right [83]here. (And if you've already registered with them, clicking right [86]here. (And if you've already registered with them, clicking
this link will take you to directly to the place where you can [84]buy this link will take you to directly to the place where you can [87]buy
the standard on-line. the standard on-line.
Who is your country's member body? Visit the [85]ISO homepage and find Who is your country's member body? Visit the [88]ISO homepage and find
out! out!
_________________________________________________________________ _________________________________________________________________
See [86]license.html for copying conditions. Comments and suggestions See [89]license.html for copying conditions. Comments and suggestions
are welcome, and may be sent to [87]the libstdc++ mailing list. are welcome, and may be sent to [90]the libstdc++ mailing list.
References References
@ -627,73 +688,76 @@ References
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16. ../faq/index.html#2_3 16. ../faq/index.html#2_3
17. ../faq/index.html#2_4 17. ../faq/index.html#2_4
18. ../faq/index.html#3_0 18. ../faq/index.html#2_5
19. ../faq/index.html#3_1 19. ../faq/index.html#3_0
20. ../faq/index.html#3_2 20. ../faq/index.html#3_1
21. ../faq/index.html#3_3 21. ../faq/index.html#3_2
22. ../faq/index.html#4_0 22. ../faq/index.html#3_3
23. ../faq/index.html#4_1 23. ../faq/index.html#3_4
24. ../faq/index.html#4_2 24. ../faq/index.html#4_0
25. ../faq/index.html#4_3 25. ../faq/index.html#4_1
26. ../faq/index.html#4_4 26. ../faq/index.html#4_2
27. ../faq/index.html#4_4_iostreamclear 27. ../faq/index.html#4_3
28. ../faq/index.html#4_4_Weff 28. ../faq/index.html#4_4
29. ../faq/index.html#4_4_rel_ops 29. ../faq/index.html#4_4_iostreamclear
30. ../faq/index.html#4_4_interface 30. ../faq/index.html#4_4_Weff
31. ../faq/index.html#4_4_glibc 31. ../faq/index.html#4_4_rel_ops
32. ../faq/index.html#4_4_checks 32. ../faq/index.html#4_4_interface
33. ../faq/index.html#4_5 33. ../faq/index.html#4_4_glibc
34. ../faq/index.html#5_0 34. ../faq/index.html#4_4_checks
35. ../faq/index.html#5_1 35. ../faq/index.html#4_5
36. ../faq/index.html#5_2 36. ../faq/index.html#5_0
37. ../faq/index.html#5_3 37. ../faq/index.html#5_1
38. ../faq/index.html#5_4 38. ../faq/index.html#5_2
39. ../faq/index.html#5_5 39. ../faq/index.html#5_3
40. ../faq/index.html#5_6 40. ../faq/index.html#5_4
41. ../faq/index.html#5_7 41. ../faq/index.html#5_5
42. http://gcc.gnu.org/libstdc++/download.html 42. ../faq/index.html#5_6
43. ../17_intro/DESIGN 43. ../faq/index.html#5_7
44. http://gcc.gnu.org/ 44. http://gcc.gnu.org/libstdc++/download.html
45. http://gcc.gnu.org/gcc-2.95/buildstat.html 45. ../17_intro/DESIGN
46. http://gcc.gnu.org/libstdc++/ 46. http://gcc.gnu.org/
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49. ../17_intro/contribute.html 49. http://gcc.gnu.org/libstdc++/download.html
50. http://www.boost.org/ 50. http://gcc.gnu.org/libstdc++/
51. http://gcc.gnu.org/fom_serv/cache/33.html 51. ../17_intro/contribute.html
52. mailto:libstdc++@gcc.gnu.org 52. http://www.boost.org/
53. mailto:pme@gcc.gnu.org 53. http://gcc.gnu.org/fom_serv/cache/33.html
54. mailto:gdr@gcc.gnu.org 54. mailto:libstdc++@gcc.gnu.org
55. ../17_intro/license.html 55. mailto:pme@gcc.gnu.org
56. ../documentation.html 56. mailto:gdr@gcc.gnu.org
57. ../17_intro/RELEASE-NOTES 57. ../17_intro/license.html
58. http://www.gnu.org/software/cvs/cvs.html 58. ../documentation.html
59. http://www.cvshome.org/ 59. ../17_intro/RELEASE-NOTES
60. http://gcc.gnu.org/ml/libstdc++/2000-12/msg00279.html 60. http://www.gnu.org/software/cvs/cvs.html
61. http://gcc.gnu.org/install/configure.html 61. http://www.cvshome.org/
62. http://gcc.gnu.org/ml/libstdc++/1998/msg00006.html 62. ../18_support/howto.html
63. http://www.cantrip.org/draft-bugs.txt 63. http://gcc.gnu.org/ml/libstdc++/2000-12/msg00279.html
64. http://anubis.dkuug.dk/jtc1/sc22/wg21/ 64. http://gcc.gnu.org/install/configure.html
65. ../faq/index.html#5_2 65. http://gcc.gnu.org/ml/libstdc++/1998/msg00006.html
66. ../ext/howto.html#5 66. http://www.cantrip.org/draft-bugs.txt
67. http://gcc.gnu.org/ml/libstdc++/2001-01/msg00247.html 67. http://anubis.dkuug.dk/jtc1/sc22/wg21/
68. http://gcc.gnu.org/gnatswrite.html 68. ../faq/index.html#5_2
69. http://gcc.gnu.org/ml/gcc/2000-10/msg00732.html 69. ../ext/howto.html#5
70. ../faq/index.html#4_4_interface 70. http://gcc.gnu.org/ml/libstdc++/2001-01/msg00247.html
71. ../19_diagnostics/howto.html#3 71. http://gcc.gnu.org/gnatswrite.html
72. http://gcc.gnu.org/contribute.html 72. http://gcc.gnu.org/ml/gcc/2000-10/msg00732.html
73. ../17_intro/contribute.html 73. ../faq/index.html#4_4_interface
74. ../faq/index.html#2_4 74. ../19_diagnostics/howto.html#3
75. ../ext/howto.html#5 75. http://gcc.gnu.org/contribute.html
76. http://gcc.gnu.org/ml/libstdc++/1999/msg00080.html 76. ../17_intro/contribute.html
77. http://gcc.gnu.org/ml/libstdc++/1999/msg00084.html 77. ../faq/index.html#2_4
78. http://www.sgi.com/Technology/STL/ 78. ../ext/howto.html#5
79. ../ext/howto.html 79. http://gcc.gnu.org/ml/libstdc++/1999/msg00080.html
80. ../17_intro/howto.html#3 80. http://gcc.gnu.org/ml/libstdc++/1999/msg00084.html
81. ../23_containers/howto.html#3 81. http://www.sgi.com/Technology/STL/
82. ../27_io/howto.html#9 82. ../ext/howto.html
83. http://www.ansi.org/ 83. ../17_intro/howto.html#3
84. http://webstore.ansi.org/ansidocstore/product.asp?sku=ISO%2FIEC+14882%2D1998 84. ../23_containers/howto.html#3
85. http://www.iso.ch/ 85. ../27_io/howto.html#9
86. ../17_intro/license.html 86. http://www.ansi.org/
87. mailto:libstdc++@gcc.gnu.org 87. http://webstore.ansi.org/ansidocstore/product.asp?sku=ISO%2FIEC+14882%2D1998
88. http://www.iso.ch/
89. ../17_intro/license.html
90. mailto:libstdc++@gcc.gnu.org