From-SVN: r267962

From-SVN: r267961

gcc/:
        * godump.c (go_output_typedef): When outputting a typedef, refer
	to the underlying type by its name and not its structure.
gcc/testsuite:
        * gcc.misc-tests/godump-1.c: Add test case for typedef before
	struct.

From-SVN: r267958

PR c++/88795 reports an ICE building a function_type for a deduction guide
when the substitution into the function signature fails, due to an
error_mark_node being returned from tsubst_arg_types but not being checked
for.  This error_mark_node gets used as the TYPE_ARG_TYPES, leading to
ICEs in various places that assume this is a TREE_LIST.

This patch checks the result of tsubst_arg_types and propagates the failure
if it returns error_mark_node.  It also adds an assertion to
build_function_type, to fail faster if passed in error_mark_node.

gcc/cp/ChangeLog:
	PR c++/88795
	* pt.c (build_deduction_guide): Bail out if tsubst_arg_types
	fails.

gcc/testsuite/ChangeLog:
	PR c++/88795
	* g++.dg/template/pr88795.C: New test.

gcc/ChangeLog:
	PR c++/88795
	* tree.c (build_function_type): Assert that arg_types is not
	error_mark_node.

From-SVN: r267957

    
    CL 157557 changes the compiler to add one byte padding to
    non-empty struct ending with a zero-sized field. Add the same
    padding to the FFI type, so reflect.Call works.
    
    This fixes test/fixedbugs/issue26335.go in the main repo.
    
    Reviewed-on: https://go-review.googlesource.com/c/158018

From-SVN: r267956

gcc/d/ChangeLog:

	* d-codegen.cc (build_typeof_null_value): New function.
	* d-tree.h (build_typeof_null_value): Declare.
	* d-convert.cc (convert_expr): Use build_typeof_null_value.
	* expr.cc (ExprVisitor::visit(NullExp)): Likewise.

From-SVN: r267955

2019-01-15  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/43136
	* resolve.c (resolve_array_ref): Add equal_length argument; set it
	if the length of the substring equals that of the orignal
	variable.
	(resolve_ref): Remove the substring if it is equal in length to
	the original variable, unless it is an EXPR_SUBSTRING).

2019-01-15  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/43136
	* gfortran.dg/actual_array_substr_3.f90: New test.

From-SVN: r267954

2019-01-15  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/43072
	* resolve.c (resolve_array_ref): Add equal_length argument; set it
	if the length of the substring equals that of the orignal
	variable.
	(resolve_ref): Remove the substring if it is equal in length to
	the original variable, unless it is an EXPR_SUBSTRING).

2019-01-15  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/43072
	* gfortran.dg/actual_array_substr_3.f90: New test.

From-SVN: r267953

    
    This ports https://golang.org/cl/155918 from the master repo.
    
        runtime: panic on uncomparable map key, even if map is empty
    
        Reorg map flags a bit so we don't need any extra space for the extra flag.
    
    This is a pre-req for updating libgo to the Go 1.12beta2 release.
    
    Reviewed-on: https://go-review.googlesource.com/c/157858

From-SVN: r267950

2019-01-15  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/81849
	* resolve.c (resolve_symbol): Host associated varaibles can appear
	in the specification statement of a RESULT array.

2019-01-15  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/81849
	* gfortran.dg/pr81849.f90: New test.

From-SVN: r267948

2019-01-15  Paul Thomas  <pault@gcc.gnu.org>

	* trans-expr.c (gfc_conv_gfc_desc_to_cfi_desc): Deal with exprs
	that are indirect references; ie. dummy arguments.

2019-01-15  Paul Thomas  <pault@gcc.gnu.org>

	* gfortran.dg/ISO_Fortran_binding_2.c : Change reference to
	ISO_Fortran_binding_2.h.

From-SVN: r267946

	PR c++/88866
	* g++.dg/cpp0x/variadic126.C: Tweak dg-error.

From-SVN: r267944

From-SVN: r267942

The original patch for this PR made it an error to list the stack
pointer in the clobber list of an inline asm.  However, the general
feeling seemed to be that going straight to a hard error was too harsh,
since there's quite a bit of existing code that has the clobber.

This patch implements the compromise discussed on IRC of making it
a -Wdeprecated warning instead.

2019-01-15  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	PR inline-asm/52813
	* doc/extend.texi: Document that listing the stack pointer in the
	clobber list of an asm is a deprecated feature.
	* common.opt (Wdeprecated): Moved from c-family/c.opt.
	* cfgexpand.c (asm_clobber_reg_is_valid): Issue a -Wdeprecated
	warning instead of an error for clobbers of the stack pointer.
	Add a note explaining why.

gcc/c-family/
	PR inline-asm/52813
	* c.opt (Wdeprecated): Move documentation and variable to common.opt.

gcc/d/
	PR inline-asm/52813
	* lang.opt (Wdeprecated): Reference common.opt instead of c.opt.

gcc/testsuite/
	PR inline-asm/52813
	* gcc.target/i386/pr52813.c (test1): Turn the diagnostic into a
	-Wdeprecated warning and expect a following note:.

From-SVN: r267941

re PR debug/88046 (ICE in add_data_member_location_attribute at gcc/dwarf2out.c:19237 since r261885)

2019-01-15  Richard Biener  <rguenther@suse.de>

	PR debug/88046
	* dwarf2out.c (gen_member_die): Do not generate inheritance
	DIEs late.

	* g++.dg/lto/pr88046_0.C: New testcase.

From-SVN: r267940

re PR tree-optimization/88855 (ICE: verify_ssa failed (error: SSA_NAME_OCCURS_IN_ABNORMAL_PHI should be set))

2019-01-15  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88855
	* tree-if-conv.c (combine_blocks): Collect
	SSA_NAME_OCCURS_IN_ABNORMAL_PHI from propagated out virtuals.

	* gcc.dg/pr88855.c: New testcase.

From-SVN: r267939

	* include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
	as 201611L, because P0497R0 changes are supported.
	* include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.

From-SVN: r267938

	* include/bits/erase_if.h [__cplusplus > 201703L]
	(__cpp_lib_erase_if): Only define for C++2a.
	* include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
	(__cpp_lib_null_iterators): Define.
	* include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
	(__cpp_lib_null_iterators): Define.
	[__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.

From-SVN: r267937

	* doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
	status.
	* include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
	Define.
	* include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
	changes are supported.
	* include/std/optional (__cpp_lib_optional): Likewise.
	* include/std/variant (__cpp_lib_variant): Likewise.
	* include/std/version [!__STRICT_ANSI__]
	(__cpp_lib_uncaught_exceptions): Define as long integer.
	[__cplusplus >= 201703L] (__cpp_lib_any)
	(__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
	(__cpp_lib_variant): Define for C++17.
	[__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
	as long integer.
	* libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
	integer.

From-SVN: r267936

From-SVN: r267935

2019-01-15  Tom de Vries  <tdevries@suse.de>

	PR target/80547
	* config/nvptx/nvptx.c (nvptx_goacc_reduction_init): Handle
	lhs == NULL_TREE for gang-level reduction.

	* testsuite/libgomp.oacc-c-c++-common/gang-reduction-var-assignment.c:
	New test.

From-SVN: r267934

2019-01-15  Richard Biener  <rguenther@suse.de>
	    Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	PR ipa/88788
	* ipa-pure-const.c (malloc_candidate_p_1): Add parameter visited and
	return true if SSA_NAME is already marked in visited bitmap.
	(malloc_candidate_p): Pass visited to malloc_candidate_p_1.

Co-Authored-By: Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>

From-SVN: r267933

/cp
2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (start_decl): Improve error location.
	* decl2.c (grokfield): Likewise.

/testsuite
2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/diagnostic/typedef-initialized.C: New.

/cp
2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Move further up the location_t loc
	declaration and use the location when building a TYPE_DECL for
	a typedef name.
	* decl2.c (grokbitfield): Use DECL_SOURCE_LOCATION in the error
	about an ill-formed bit-field as typedef.

/testsuite
2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/diagnostic/bitfld3.C: New.

From-SVN: r267932

	PR tree-optimization/88775
	* match.pd (cmp (convert1?@2 addr@0) (convert2? addr@1)): Optimize
	equal == 0 equality pointer comparisons some more if compared in
	integral types and either one points to an automatic var and the
	other to a global, or we can prove at least one points to the middle
	or both point to start or both point to end.

	* gcc.dg/tree-ssa/pr88775-1.c: New test.
	* gcc.dg/tree-ssa/pr88775-2.c: New test.

From-SVN: r267931

autofdo create_gcov uses a lot of memory for large sample files.
Since gcc runs quite long the sample files generated during
the bootstrap are fairly ig.

Currently I can't even build make autoprofiledbootstrap on my system at
home because create_gcov needs more than 12GB and runs out of memory.

This should probably be fixed in create_gcov, but for now
lowering the sampling rate works well enough for me. The bootstrap
run is long enough that it gets good enough data in any case.

gcc/:
2019-01-14  Andi Kleen  <ak@linux.intel.com>

	* Makefile.in: Lower autofdo sampling rate by 10x.
	* Makefile.tpl: Dito.

From-SVN: r267930

From-SVN: r267929

	* typeck.c (can_do_nrvo_p): Check error_mark_node.

	* g++.dg/cpp1y/auto-fn55.C: New test.

From-SVN: r267926

c-cppbuiltin.c (c_cpp_builtin): Define __cpp_guaranteed_copy_elision and __cpp_nontype_template_parameter_auto.

	* c-cppbuiltin.c (c_cpp_builtin): Define __cpp_guaranteed_copy_elision
	and __cpp_nontype_template_parameter_auto.  Add a comment that
	__cpp_template_auto is deprecated.

	* g++.dg/cpp1z/feat-cxx1z.C: Add tests for
	__cpp_guaranteed_copy_elision and __cpp_nontype_template_parameter_auto
	feature test macros.
	* g++.dg/cpp2a/feat-cxx2a.C: Likewise.

From-SVN: r267925

	* decl2.c (maybe_emit_vtables): Check CLASSTYPE_LAZY_DESTRUCTOR.
	Fix formatting.

	* g++.dg/other/abstract7.C: New test.

From-SVN: r267924

gcc/cp/
	* cvt.c (type_promotes_to): Handle char8_t promotion.
	* decl.c (grokdeclarator): Handle invalid type specifier
	combinations involving char8_t.
	* lex.c (init_reswords): Add char8_t as a reserved word.
	* mangle.c (write_builtin_type): Add name mangling for char8_t (Du).
	* parser.c (cp_keyword_starts_decl_specifier_p)
	(cp_parser_simple_type_specifier): Recognize char8_t as a simple
	type specifier.
	(cp_parser_string_literal): Use char8_array_type_node for the type
	of CPP_UTF8STRING.
	(cp_parser_set_decl_spec_type): Tolerate char8_t typedefs in system
	headers.
	* rtti.c (emit_support_tinfos): type_info support for char8_t.
	* tree.c (char_type_p): Recognize char8_t as a character type.
	* typeck.c (string_conv_p): Handle conversions of u8 string
	literals of char8_t type.
	(check_literal_operator_args): Handle UDLs with u8 string literals
	of char8_t type.
	* typeck2.c (ordinary_char_type_p): New.
	(digest_init_r): Disallow initializing a char array with a u8 string
	literal.
gcc/c-family/
	* c-common.c (c_common_reswords): Add char8_t.
	(fix_string_type): Use char8_t for the type of u8 string literals.
	(c_common_get_alias_set): char8_t doesn't alias.
	(c_common_nodes_and_builtins): Define char8_t as a builtin type in
	C++.
	(c_stddef_cpp_builtins): Add __CHAR8_TYPE__.
	(keyword_begins_type_specifier): Add RID_CHAR8.
	* c-common.h (rid): Add RID_CHAR8.
	(c_tree_index): Add CTI_CHAR8_TYPE and CTI_CHAR8_ARRAY_TYPE.
	Define D_CXX_CHAR8_T and D_CXX_CHAR8_T_FLAGS.
	Define char8_type_node and char8_array_type_node.
	* c-cppbuiltin.c (cpp_atomic_builtins): Predefine
	__GCC_ATOMIC_CHAR8_T_LOCK_FREE.
	(c_cpp_builtins): Predefine __cpp_char8_t.
	* c-lex.c (lex_string): Use char8_array_type_node as the type of
	CPP_UTF8STRING.
	(lex_charconst): Use char8_type_node as the type of CPP_UTF8CHAR.
	* c-opts.c: If not otherwise specified, enable -fchar8_t when
	targeting C++2a.
	* c.opt: Add the -fchar8_t command line option.
libiberty/
	* cp-demangle.c (cplus_demangle_builtin_types)
	(cplus_demangle_type): Add name demangling for char8_t (Du).
	* cp-demangle.h: Increase D_BUILTIN_TYPE_COUNT to accommodate the
	new char8_t type.

From-SVN: r267923

gcc/c-family/ChangeLog:

	PR target/88638
	* c-attribs.c (positional_argument): Call valid_format_string_type_p
	and issue errors if it fails.
	* c-common.h (valid_format_string_type_p): Declare.
	* c-format.c (valid_stringptr_type_p): Rename...
	(valid_format_string_type_p): ...to this and make extern.
	(handle_format_arg_attribute): Adjust to new name.
	(check_format_string): Same.

gcc/testsuite/ChangeLog:

	PR target/88638
	* gcc.dg/format/attr-8.c: New test.
	* gcc.dg/darwin-cfstring-format-1.c: Adjust diagnostics.
	* gcc.dg/format/attr-3.c: Same.
	* obj-c++.dg/fsf-nsstring-format-1.mm: Same.
	* objc.dg/fsf-nsstring-format-1.m: Same.

gcc/ChangeLog:

	PR target/88638
	* doc/extend.texi (Darwin Format Checks): Clarify.

From-SVN: r267922

2019-01-14  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/88263
	* decl2.c (get_tls_wrapper_fn): Use DECL_SOURCE_LOCATION
	as location of the TLS wrapper.
2019-01-14  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/88263
	* g++.dg/gcov/pr88263-2.C: New test.

From-SVN: r267921

gcc/ChangeLog:

	* invoke.texi (-Wmemset-transposed-args): Fix typos, adjust wording.

From-SVN: r267920

genmatch.c (dt_simplify::gen_1): Change dumping dependent on whether we are in (simplify ...) or (match ...) context.

2019-01-14  Richard Biener  <rguenther@suse.de>

	* genmatch.c (dt_simplify::gen_1): Change dumping dependent on
	whether we are in (simplify ...) or (match ...) context.

From-SVN: r267917

	PR rtl-optimization/88796
	* emit-rtl.h (struct rtl_data): Add stack_protect_guard_decl field.
	* cfgexpand.c (stack_protect_prologue): Initialize
	crtl->stack_protect_guard_decl.
	* function.c (stack_protect_epilogue): Use it instead of calling
	targetm.stack_protect_guard again.
	* dse.c (check_mem_read_rtx): Ignore MEM_VOLATILE_P reads from
	MEMs with MEM_EXPR equal to crtl->stack_protect_guard or
	crtl->stack_protect_guard_decl.
	* config/i386/i386.c (ix86_stack_protect_guard): Set TREE_THIS_VOLATILE
	on the returned MEM_EXPR.

	* gcc.target/i386/pr88796.c: New test.

From-SVN: r267916

From-SVN: r267914

One fix in the asm statement parser to stop parsing if the end of the
statement has been reached, and moves all inline asm tests to gdc.dg.
These being adjusted where necessary to test the GCC style instead.

gcc/testsuite/ChangeLog:

2019-01-14  Iain Buclaw  <ibuclaw@gdcproject.org>

	* gdc.dg/asm1.d: New test.
	* gdc.dg/asm2.d: New test.
	* gdc.dg/asm3.d: New test.
	* gdc.dg/asm4.d: New test.
	* lib/gdc.exp (gdc_init): Set gcc_error_prefix and gcc_warning_prefix.

From-SVN: r267913

2019-01-13  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/88776
	* io/open.c (newunit): Free format buffer if the unit specified is for
	stdin, stdout, or stderr.

	* gfortran.dg/namelist_96.f90: New test.

From-SVN: r267910

From-SVN: r267909

2019-01-13  Dominique d'Humieres  <dominiq@gcc.gnu.org>

	PR fortran/88803
	* gfortran.texi: Replace @xref with @ref and adjust the sentence.

From-SVN: r267906