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2c390a483b
gcc/libstdc++-v3
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Jonathan Wakely 2c390a483b PR libstdc++/90046 fix build failure on epiphany-elf 
The epiphany-elf target aligns structs to 8 bytes, which causes the
static_assert(alignof(_Chunk) == 1) to fail.

Instead of requiring _Chunks to be positionable at any alignment, ensure
new buffers are aligned to alignof(_Chunk). Because the buffer size is a
power of two, we know that both the buffer size and sizeof(_Chunk) are
multiples of alignof(_Chunk). So is p is aligned to alignof(_Chunk) then
so is (p + size - sizeof(_Chunk)). So just ensure the new buffer is
aligned to at least alignof(_Chunk), which should already be true
because the caller requests at least alignof(max_align_t).

	PR libstdc++/90046
	* src/c++17/memory_resource.cc
	(monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
	needed to allow placing a _Chunk at the end of the buffer.
	(monotonic_buffer_resource::_M_new_buffer): Remove static_assert.

From-SVN: r270291
2019-04-11 20:58:14 +01:00
..
config PR libstdc++/89986 export directory_iterator::increment 2019-04-05 17:56:27 +01:00
doc Update documentation regarding bogus memory leaks in libstdc++ 2019-04-10 20:24:04 +01:00
include Add comments and style fixes to <variant> 2019-04-09 19:50:48 +01:00
libsupc++ PR libstdc++/89629 fix _Hash_bytes for lengths > INT_MAX 2019-03-11 13:46:05 +00:00
po PR libstdc++/89466 avoid slow xsltproc command in configure 2019-02-27 11:25:44 +00:00
python PR libstdc++/89466 avoid slow xsltproc command in configure 2019-02-27 11:25:44 +00:00
scripts Update copyright years. 2019-01-01 13:31:55 +01:00
src PR libstdc++/90046 fix build failure on epiphany-elf 2019-04-11 20:58:14 +01:00
testsuite Fix typo in effective-target check 2019-04-10 15:46:03 +01:00
acinclude.m4 PR libstdc++/89466 avoid slow xsltproc command in configure 2019-02-27 11:25:44 +00:00
aclocal.m4 Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856). 2018-10-31 17:03:16 +00:00
ChangeLog PR libstdc++/90046 fix build failure on epiphany-elf 2019-04-11 20:58:14 +01:00
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ChangeLog-2017 Update copyright years. 2018-01-03 11:03:58 +01:00
ChangeLog-2018 Update copyright years. 2019-01-01 13:31:55 +01:00
config.h.in PR libstdc++/89460 Fix Networking TS test failures on HP-UX 2019-03-11 16:28:11 +00:00
configure PR libstdc++/89460 Fix Networking TS test failures on HP-UX 2019-03-11 16:28:11 +00:00
configure.ac PR libstdc++/89460 Fix Networking TS test failures on HP-UX 2019-03-11 16:28:11 +00:00
configure.host configure.host (abi_baseline_pair): Adjust for SPARC64/Linux. 2019-02-22 07:25:52 +00:00
crossconfig.m4 PR libstdc++/89460 Fix Networking TS test failures on HP-UX 2019-03-11 16:28:11 +00:00
fragment.am PR libstdc++/86450 use -Wabi=2 and simplify -Werror use 2018-07-17 14:18:47 +01:00
linkage.m4
Makefile.am Update copyright years. 2019-01-01 13:31:55 +01:00
Makefile.in PR libstdc++/89466 avoid slow xsltproc command in configure 2019-02-27 11:25:44 +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.