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4 Commits

Author SHA1 Message Date
Bernd Edlinger a0019047b8 re PR libstdc++/78110 (freestanding libstdc++ fails to compile) 
2016-10-26  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR libstdc++/78110
        * libsupc++/new_opa.cc: Don't include <malloc.h> in a free standing
        environment.  Declare memalign directly in that case.

From-SVN: r241591
 2016-10-26 17:26:00 +00:00
Jonathan Wakely 84c08ec96a Replace modulus with mask operation in over-aligned new 
2016-09-16  Jonathan Wakely  <jwakely@redhat.com>
	    Marc Glisse  <marc.glisse@inria.fr>

	* libsupc++/new_opa.cc [_GLIBCXX_HAVE_ALIGNED_ALLOC]
	(operator new(size_t, align_val_t)): Replace modulus operator with
	mask.

Co-Authored-By: Marc Glisse <marc.glisse@inria.fr>

From-SVN: r240192
 2016-09-16 19:09:14 +01:00
Jonathan Wakely 426042f5f2 Adjust arguments to aligned_alloc or posix_memalign 
* libsupc++/new_opa.cc [_GLIBCXX_HAVE_POSIX_MEMALIGN] (aligned_alloc):
	Increase alignment if less than sizeof(void*).
	[_GLIBCXX_HAVE_ALIGNED_ALLOC] (operator new(size_t, align_val_t)):
	Increase size if not a multiple of alignment.

From-SVN: r240187
 2016-09-16 13:11:19 +01:00
Jason Merrill af63ba4b30 Implement P0035R4, C++17 new of over-aligned types. 
gcc/cp/
	* cp-tree.h (enum cp_tree_index): Add CPTI_ALIGN_TYPE.
	(align_type_node): New macro.
	* call.c (build_operator_new_call): Handle C++17 aligned new.
	(second_parm_is_size_t, build_op_delete_call): Likewise.
	(non_placement_deallocation_fn_p): Likewise. Rename to
	usual_deallocation_fn_p.
	(aligned_allocation_fn_p, aligned_deallocation_fn_p): New.
	* decl.c (cxx_init_decl_processing): Add aligned new support.
	* init.c (type_has_new_extended_alignment): New.
	(build_new_1): Handle aligned new.
	* tree.c (vec_copy_and_insert): New.
gcc/c-family/
	* c.opt: Add -faligned-new and -Waligned-new.
	* c-common.c (max_align_t_align): Split out from...
	(cxx_fundamental_alignment_p): ...here.
	* c-common.h: Declare it.
	* c-cppbuiltin.c (c_cpp_builtins): Handle aligned new.
libstdc++-v3/
	* libsupc++/new: Declare aligned new/delete operators.
	* config/abi/pre/gnu.ver: Export them.
	* configure.ac: Check for aligned_alloc, posix_memalign, memalign,
	_aligned_malloc.
	* libsupc++/new_opa.cc: New.
	* libsupc++/new_opant.cc: New.
	* libsupc++/new_opva.cc: New.
	* libsupc++/new_opva.cc: New.
	* libsupc++/del_opa.cc: New.
	* libsupc++/del_opant.cc: New.
	* libsupc++/del_opsa.cc: New.
	* libsupc++/del_opva.cc: New.
	* libsupc++/del_opvant.cc: New.
	* libsupc++/del_opvsa.cc: New.
	* libsupc++/Makefile.am: Build them.

From-SVN: r240056
 2016-09-09 17:22:15 -04:00