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gcc/libstdc++-v3
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Jonathan Wakely 432258be4f libstdc++: Fix new <sstream> constructors 
- Add a missing 'explicit' to a basic_stringbuf constructor.
- Set up the get/put area pointers in the constructor from strings using
  different allocator types.
- Remove public basic_stringbuf::__sv_type alias.
- Do not construct temporary basic_string objects with a
  default-constructed allocator.

Also, change which basic_string constructor is used, as a minor
compile-time optimization. Constructing from a basic_string_view
requires more work from the compiler, so just use a pointer and length.

libstdc++-v3/ChangeLog:

	* include/std/sstream (basic_stringbuf(const allocator_type&):
	Add explicit.
	(basic_stringbuf(const basic_string<C,T,SA>&, openmode, const A&)):
	Call _M_stringbuf_init. Construct _M_string from pointer and length
	to avoid constraint checks for string view.
	(basic_stringbuf::view()): Make __sv_type alias local to the
	function.
	(basic_istringstream(const basic_string<C,T,SA>&, openmode, const A&)):
	Pass string to _M_streambuf instead of constructing a temporary
	with the wrong allocator.
	(basic_ostringstream(const basic_string<C,T,SA>&, openmode, const A&)):
	Likewise.
	(basic_stringstream(const basic_string<C,T,SA>&, openmode, const A&)):
	Likewise.
	* src/c++20/sstream-inst.cc: Use string_view and wstring_view
	typedefs in explicit instantiations.
	* testsuite/27_io/basic_istringstream/cons/char/1.cc: Add more
	tests for constructors.
	* testsuite/27_io/basic_ostringstream/cons/char/1.cc: Likewise.
	* testsuite/27_io/basic_stringbuf/cons/char/1.cc: Likewise.
	* testsuite/27_io/basic_stringbuf/cons/char/2.cc: Likewise.
	* testsuite/27_io/basic_stringbuf/cons/wchar_t/1.cc: Likewise.
	* testsuite/27_io/basic_stringbuf/cons/wchar_t/2.cc: Likewise.
	* testsuite/27_io/basic_stringstream/cons/char/1.cc: Likewise.
2020-11-05 13:31:32 +00:00
..
config libstdc++: Add mising gnu-versioned-namespace symbols 2020-11-03 22:01:55 +01:00
doc libstdc++: Document istreambuf_iterator base class change [PR 92285] 2020-11-04 12:46:52 +00:00
include libstdc++: Fix new <sstream> constructors 2020-11-05 13:31:32 +00:00
libsupc++ libstdc++: Add comment to nothrow new explaining catch (...) 2020-10-28 13:19:21 +00:00
po libstdc++: Regenerate makefiles 2020-06-23 07:59:40 +01:00
python libstdc++: Fix compatibility support in unique_ptr pretty printer 2020-08-10 18:47:06 +01:00
scripts libstdc++: Pass CXXFLAGS to check_performance script 2020-10-09 14:01:55 +01:00
src libstdc++: Fix new <sstream> constructors 2020-11-05 13:31:32 +00:00
testsuite libstdc++: Fix new <sstream> constructors 2020-11-05 13:31:32 +00:00
acinclude.m4 libstdc++: Implement C++20 features for <sstream> 2020-10-28 11:56:06 -07:00
aclocal.m4 Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
ChangeLog Daily bump. 2020-11-05 00:16:36 +00:00
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ChangeLog-2019 libstdc++: Fix whitespace in ChangeLog-2019 2020-01-09 21:31:35 +00:00
config.h.in libstdc++: Add std::from_chars for floating-point types 2020-07-20 23:49:27 +01:00
configure libstdc++: Implement C++20 features for <sstream> 2020-10-28 11:56:06 -07:00
configure.ac libstdc++: Add std::from_chars for floating-point types 2020-07-20 23:49:27 +01:00
configure.host Scope libstdc++ configuration for vxworks to all versions 2020-10-22 16:40:57 +00:00
crossconfig.m4 Scope libstdc++ configuration for vxworks to all versions 2020-10-22 16:40:57 +00:00
fragment.am
linkage.m4
Makefile.am build: Use -include instead of conditional include. 2020-06-22 21:31:48 +00:00
Makefile.in build: Use -include instead of conditional include. 2020-06-22 21:31:48 +00:00
README

README 

file: libstdc++-v3/README

New users may wish to point their web browsers to the file
index.html in the 'doc/html' subdirectory.  It contains brief
building instructions and notes on how to configure the library in
interesting ways.