[libstdc++ PATCH] libstdc++ debug mode (fourth try)

[Doug Gregor]

I've attached the latest version of the libstdc++ debug mode. Here are 
the changes for version 4:

Version 4:
	* Rewritten error message output (doesn't use IOStreams now).
	* Testcases moved into new testcase structure.
	* Added design documentation.
	* Move debug mode support code into namespace __gnu_debug.
	* Avoid using "iterator" as a variable name.
	* Normalize names of some of the checks (e.g., __check_singular).
	* Added linker map bits.

I believe it incorporates all the changes I've been asked to make. 
Tested on i686-pc-linux-gnu and powerpc-apple-darwin; no regressions in 
either debug or release mode. ChangeLog attached, along with the 
libstdc++ debug mode patch history in debugmode.txt.

This patch requires the link_name extension to the C++ front end, 
available here:
	http://gcc.gnu.org/ml/gcc-patches/2003-07/msg02413.html

	Doug

On Monday, August 4, 2003, at 2:49PM, Benjamin Kosnik wrote:

>
>> It can :) Trying to unify debug/dbg_foo.h and debug/foo means that the
>> result won't even have proper #include guards, because we have to 
>> allow
>> it to be #include'd twice in a program (once circuitously through 
>> <foo>
>> and once through <debug/foo>).
>
> ... then do everything except for this, and send me the patch.
>
> Thanks!
>
> -benjamin
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