Commit Graph

152284 Commits

Author SHA1 Message Date
Jason Merrill 0e53a276bc PR c++/78139 - destructor needed by new-expression
* call.c (build_special_member_call): Use tf_no_cleanup.

From-SVN: r245612
2017-02-20 13:18:30 -05:00
Aaron Sawdey f05df2ac59 strncmp-2.c: Portability fixes.
2017-02-14  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

        * gcc.dg/strncmp-2.c: Portability fixes.

From-SVN: r245608
2017-02-20 11:09:40 -06:00
Kelvin Nilsen 027a9dd509 re PR target/78056 (build failure on Power7)
gcc/testsuite/ChangeLog:

2017-02-20  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	PR target/78056
	* gcc.target/powerpc/pr78056-8.c: Remove.

From-SVN: r245607
2017-02-20 16:43:03 +00:00
Gerald Pfeifer 21a9328c57 invoke.texi (use-after-scope-direct-emission-threshold): Fix typos and grammar, use active voice, and clarify.
* doc/invoke.texi (use-after-scope-direct-emission-threshold):
	Fix typos and grammar, use active voice, and clarify.

Co-Authored-By: Martin Liska <mliska@suse.cz>

From-SVN: r245606
2017-02-20 16:12:35 +00:00
Marek Polacek 85ade8d640 re PR sanitizer/79558 (ICE: Segfault in ubsan_type_descriptor, at ubsan.c:412)
PR sanitizer/79558
	* ubsan.c (ubsan_type_descriptor): Check if TYPE_MAX_VALUE is null.

	* c-c++-common/ubsan/bounds-14.c: New test.

From-SVN: r245605
2017-02-20 15:50:23 +00:00
Marek Polacek 80480ceee9 re PR middle-end/79537 (ICE in gimplify_expr, at gimplify.c:12009)
PR middle-end/79537
	* gimplify.c (gimplify_expr): Handle unused *&&L;.

	* gcc.dg/comp-goto-4.c: New.

From-SVN: r245604
2017-02-20 15:05:53 +00:00
Paul Thomas b93a9a15ee re PR fortran/79599 (typo in diagnostic gfc_error ("DTIO dummy argument at %L be a scalar")
2017-02-20  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79599
	* interface.c (check_dtio_arg_TKR_intent): Supply 'must'
	missing from error message.

2017-02-20  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79523
	* interface.c (gfc_find_typebound_dtio_proc): Guard test for
	flavor attribute by checking that symbol is resolved.

From-SVN: r245603
2017-02-20 14:17:42 +00:00
Jakub Jelinek 705d3b776d re PR target/79568 (ICE in extract_insn, at recog.c:2311 for pr70325.c (with -mavx512bw))
PR target/79568
	* config/i386/i386.c (ix86_expand_builtin): Handle
	OPTION_MASK_ISA_AVX512VL and OPTION_MASK_ISA_64BIT in
	ix86_builtins_isa[fcode].isa as a requirement of those
	flags and any other flag in the bitmask.
	(ix86_init_mmx_sse_builtins): Use 0 instead of
	~OPTION_MASK_ISA_64BIT as mask.
	* config/i386/i386-builtin.def (__builtin_ia32_rdtsc,
	__builtin_ia32_rdtscp, __builtin_ia32_pause, __builtin_ia32_bsrsi,
	__builtin_ia32_rdpmc, __builtin_ia32_rolqi, __builtin_ia32_rolhi,
	__builtin_ia32_rorqi, __builtin_ia32_rorhi): Likewise.

	* gcc.target/i386/pr79568-1.c: New test.
	* gcc.target/i386/pr79568-2.c: New test.
	* gcc.target/i386/pr79568-3.c: New test.

From-SVN: r245602
2017-02-20 13:52:21 +01:00
Matthew Fortune 1b51df9442 Ensure the mode used to create split registers is suppported
gcc/
	PR target/78012
	* lra-constraints.c (split_reg): Check requested split mode
	is supported by the register.

From-SVN: r245601
2017-02-20 12:07:23 +00:00
Matthew Fortune 77850e96dd Partial revert of r243782 to restore previous behavior
gcc/
	* lra-constraints.c (simplify_operand_subreg): Remove early
	return false.

From-SVN: r245600
2017-02-20 12:07:14 +00:00
Matthew Fortune 62cdb86264 Tighten condition for converting SUBREG reloads from OP_OUT to OP_INOUT
gcc/
	PR target/78660
	* lra-constraints.c (curr_insn_transform): Tighten condition
	for converting SUBREG reloads from OP_OUT to OP_INOUT.

From-SVN: r245599
2017-02-20 12:07:06 +00:00
Matthew Fortune 222aafd7b6 Handle WORD_REGISTER_OPERATIONS when reloading (subreg (reg))
gcc/
	PR target/78660
	* lra-constraints.c (curr_insn_transform): Handle
	WORD_REGISTER_OPERATIONS requirements when reloading SUBREGs.

From-SVN: r245598
2017-02-20 12:06:56 +00:00
Paul Thomas dc42a736c9 re PR fortran/79382 (DTIO ICE)
2017-02-16  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79382
	* decl.c (access_attr_decl): Test for presence of generic DTIO
	interface and emit error if not present.

2017-02-16  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79382
	* io/transfer.c (check_dtio_proc): New function.
	(formatted_transfer_scalar_read): Use it.
	(formatted_transfer_scalar_write): ditto.

2017-02-16  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79382
	* gfortran.dg/dtio_10.f90 : Change test of error message.
	* gfortran.dg/dtio_23.f90 : New test.
	* gfortran.dg/dtio_24.f90 : New test.

From-SVN: r245596
2017-02-20 10:52:50 +00:00
Paul Thomas 1ca6a74f89 re PR fortran/79434 ([submodules] separate module procedure breaks encapsulation)
2017-02-20  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79434
	* parse.c (check_component, parse_union): Whitespace.
	(set_syms_host_assoc): For a derived type, check if the module
	in which it was declared is one of the submodule ancestors. If
	it is, make the components public. Otherwise, reset attribute
	'host_assoc' and set 'use-assoc' so that encapsulation is
	preserved.

2017-02-20  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79434
	* gfortran.dg/submodule_25.f08 : New test.

From-SVN: r245595
2017-02-20 09:42:48 +00:00
Jason Merrill 8f712b7690 PR c++/78282 - auto template and pack expansion
* pt.c (find_parameter_packs_r): Don't walk into the type of
	templates other than template template-parameters.

From-SVN: r245594
2017-02-20 01:06:39 -05:00
Jason Merrill bcbdfa4ce0 PR c++/79606 - ICE with this->base_member in NSDMI
* class.c (build_base_path): Check processing_template_decl.

From-SVN: r245593
2017-02-20 01:06:20 -05:00
Jason Merrill 736a933c00 PR c++/79607 - ICE with T{} initializer
* decl.c (type_dependent_init_p): Check the type of a CONSTRUCTOR.

From-SVN: r245592
2017-02-20 01:06:03 -05:00
Jason Merrill 7950124ec2 PR c++/79566 - elaborated-type-specifier in range for
* parser.c (cp_parser_simple_declaration): Fix check for type
	definition.

From-SVN: r245591
2017-02-20 01:05:54 -05:00
Jason Merrill bea40d1191 PR c++/79400 - confusing suggestion of 'noexcept'
* parser.c (cp_parser_exception_specification_opt): Remove
	suggestion for deprecated dynamic exception-specification.

From-SVN: r245590
2017-02-20 01:05:45 -05:00
Jason Merrill 4cd159317c PR c++/79470 - partial ordering with reference parameters
* pt.c (unify) [INDIRECT_REF]: Handle pack expansions.

From-SVN: r245589
2017-02-20 01:05:38 -05:00
Jason Merrill cfb825648d PR c++/79500 - ICE with non-template deduction guide
* pt.c (do_class_deduction): Use STRIP_TEMPLATE rather than
	DECL_TEMPLATE_RESULT.

From-SVN: r245588
2017-02-20 01:05:31 -05:00
Jason Merrill de59c92b44 PR c++/79580 - ICE with compound literal
* parser.c (cp_parser_class_head): If we're in the middle of an
	expression, use ts_within_enclosing_non_class.

From-SVN: r245587
2017-02-20 01:05:08 -05:00
Jason Merrill b80dfe4441 PR c++/79503 - inherited ctor taking base class
* call.c (add_function_candidate): Also check that
	DECL_INHERITED_CTOR_BASE is reference-related to the parameter type.

From-SVN: r245586
2017-02-20 01:03:45 -05:00
GCC Administrator c9688c535e Daily bump.
From-SVN: r245585
2017-02-20 00:16:22 +00:00
Paul Thomas 63af1586ca re PR fortran/79447 ([F08] gfortran rejects valid & accepts invalid internal subprogram in a submodule)
2017-02-19  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79447
	* decl.c (gfc_set_constant_character_len): Whitespace.
	(gfc_match_end): Catch case where a procedure is contained in
	a module procedure and ensure that 'end procedure' is the
	correct termination.

2017-02-19  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79447
	* gfortran.dg/submodule_24.f08 : New test.

From-SVN: r245582
2017-02-19 19:59:20 +00:00
Andre Vehreschild 4ca4d1e95e re PR fortran/79229 (ICE in gfc_trans_assignment_1 with -fcheck=mem)
gcc/testsuite/ChangeLog:

2017-02-19  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/79229
	* gfortran.dg/class_allocate_24.f90: New test.


gcc/fortran/ChangeLog:

2017-02-19  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/79229
	* trans-expr.c (gfc_trans_assignment_1): Deref indirect refs when
	compiling with -fcheck=mem to check the pointer and not the data.

From-SVN: r245581
2017-02-19 19:43:49 +01:00
Paul Thomas dea71ad06f re PR fortran/79402 (ICE with submodules: module procedure interface defined in parent module)
2017-02-19  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79402
	* resolve.c (fixup_unique_dummy): New function.
	(gfc_resolve_expr): Call it for dummy variables with a unique
	symtree name.

2017-02-19  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/79402
	* gfortran.dg/submodule_23.f90: New test.

From-SVN: r245580
2017-02-19 18:27:14 +00:00
Andre Vehreschild e0396d770f re PR fortran/79335 (Conditional jump or move depends on uninitialised in value get_scalar_to_descriptor_type(tree_node*, symbol_attribute) (trans-expr.c:53))
gcc/fortran/ChangeLog:

2017-02-19  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/79335
	* trans-array.c (duplicate_allocatable_coarray): Ensure attributes
	passed are properly initialized.
	(structure_alloc_comps): Same.
	* trans-expr.c (gfc_trans_structure_assign): Same.

From-SVN: r245579
2017-02-19 19:18:33 +01:00
Paolo Carlini f46e2bc923 re PR c++/79380 (ICE on C++11 code with illegal alignas specifier on x86_64-linux-gnu: unexpected expression ‘f’ of kind overload)
/cp
2017-02-19  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/79380
	* typeck.c (cxx_alignas_expr): Reject a non-integral alignas
	argument.

/testsuite
2017-02-19  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/79380
	* g++.dg/cpp0x/alignas8.C: New.

From-SVN: r245578
2017-02-19 17:43:41 +00:00
Uros Bizjak 74705cc649 Revert:
2016-05-30  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/sync.md (mfence_nosse): Use "lock orl $0, -4(%esp)".

From-SVN: r245577
2017-02-19 18:34:27 +01:00
Dinka Ranns 1dee318ad8 C++17 GB50 resolution (P0505R0)
2017-02-19  Dinka Ranns  <dinka.ranns@googlemail.com>

	C++17 GB50 resolution
	* include/std/chrono (duration::operator++()): Add
	_GLIBCXX17_CONSTEXPR.
	(duration::operator++(int)): Likewise.
	(duration::operator--()): Likewise.
	(duration::operator--(int)): Likewise.
	(duration::operator+=(const duration&)): Likewise.
	(duration::operator-=(const duration&)): Likewise.
	(duration::operator*=(const rep&)): Likewise.
	(duration::operator/=(const rep&)): Likewise.
	(duration::operator%=(const rep&)): Likewise.
	(duration::operator%=(const duration&)): Likewise.
	(time_point::operator+=(const duration&)): Likewise.
	(time_point::operator-=(const duration&)): Likewise.
	* testsuite/20_util/duration/arithmetic/constexpr_c++17.cc: New test.
	* testsuite/20_util/duration/literals/range.cc: Adjust dg-error.
	* testsuite/20_util/time_point/arithmetic/constexpr.cc: New test.

From-SVN: r245575
2017-02-19 16:04:35 +00:00
Jonathan Wakely 7dfa657b5b PR c++/69523 make -Wliteral-suffix control warning
gcc:

	PR c++/69523
	* doc/invoke.texi (C++ Dialect Options) [-Wliteral-suffix]: Update
	description.

gcc/cp:

2017-02-19  Eric Fiselier  <eric@efcs.ca>
	    Jonathan Wakely  <jwakely@redhat.com>

	PR c++/69523
	* parser.c (cp_parser_unqualified_id): Use OPT_Wliteral_suffix to
	control warning about literal suffix identifiers without a leading
	underscore.

gcc/testsuite:

2017-02-19  Eric Fiselier  <eric@efcs.ca>
	    Jonathan Wakely  <jwakely@redhat.com>

	PR c++/69523
	* g++.dg/cpp0x/Wliteral-suffix2.C: New test.

From-SVN: r245574
2017-02-19 14:13:53 +00:00
Gerald Pfeifer ff7da2b6cf * doc/xml/manual/debug.xml: Adjust link to ThreadSanitizer.
From-SVN: r245572
2017-02-19 10:54:35 +00:00
Prathamesh Kulkarni 41d1b0b1ae gimple-parser.c (c_parser_gimple_postfix_expression): Check return value of c_parser_parse_ssa_name against error_mark_node and emit...
2017-02-19  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	* gimple-parser.c (c_parser_gimple_postfix_expression): Check return
	value of c_parser_parse_ssa_name against error_mark_node and emit
	error if ssa name is anonymous and written as default definition.

From-SVN: r245571
2017-02-19 09:14:38 +00:00
Prathamesh Kulkarni eab1f16915 gimple-pretty-print.c (dump_ternary_rhs): Adjust gimple dump format for FMA_EXPR.
2017-02-19  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	* gimple-pretty-print.c (dump_ternary_rhs): Adjust gimple dump format
	for FMA_EXPR.

c/
	* gimple-parser.c (c_parser_gimple_postfix_expression): Handle
	FMA_EXPR.

testsuite/
	* gcc.dg/gimplefe-26.c: New test.

From-SVN: r245570
2017-02-19 09:06:30 +00:00
GCC Administrator 593bf80a53 Daily bump.
From-SVN: r245569
2017-02-19 00:16:26 +00:00
Gerald Pfeifer 3fad5342e2 io.xml: Update link to groups.google.com.
* doc/xml/manual/io.xml: Update link to groups.google.com.
	Tweak link description.

From-SVN: r245565
2017-02-18 21:15:51 +00:00
Jakub Jelinek 497b7c4704 final.c (last_columnnum, [...]): New variables.
* final.c (last_columnnum, override_columnnum): New variables.
	(final_start_function): Set last_columnnum, pass it to begin_prologue
	hook and pass 0 to dwarf2out_begin_prologue.
	(final_scan_insn): Update override_columnnum.  Pass last_columnnum
	to source_line debug hook.
	(notice_source_line): Compute last_columnnum and for debug_column_info
	return true on column changes.
	* debug.h (struct gcc_debug_hooks): Add column argument to
	source_line and begin_prologue hooks.
	(debug_nothing_int_charstar_int_bool): Remove prototype.
	(debug_nothing_int_int_charstar,
	debug_nothing_int_int_charstar_int_bool): New prototypes.
	(dwarf2out_begin_prologue): Add column argument.
	* debug.c (do_nothing_debug_hooks): Adjust source_line and
	begin_prologue hooks.
	(debug_nothing_int_charstar_int_bool): Remove.
	(debug_nothing_int_int_charstar,
	debug_nothing_int_int_charstar_int_bool): New functions.
	* dwarf2out.c (dwarf2out_begin_prologue): Add column argument, pass it
	through to dwarf2out_source_line.
	(dwarf2_lineno_debug_hooks): Adjust begin_prologue hook.
	(dwarf2out_source_line): Add column argument, emit it if requested.
	* sdbout.c (sdbout_source_line, sdbout_begin_prologue): Add column
	arguments.
	* xcoffout.h (xcoffout_begin_prologue, xcoffout_source_line): Likewise.
	* xcoffout.c (xcoffout_begin_prologue, xcoffout_source_line): Likewise.
	* vmsdbgout.c (vmsdbgout_begin_prologue): Add column argument, pass it
	through to dwarf2out_begin_prologue.
	(vmsdbgout_source_line): Add column argument, pass it through to
	dwarf2out_source_line.
	* dbxout.c (dbxout_begin_prologue): Add column argument, adjust
	dbxout_source_line caller.
	(dbxout_source_line): Add column argument.

From-SVN: r245564
2017-02-18 17:11:40 +01:00
Jakub Jelinek 0029b929c9 common.opt (gno-column-info, [...]): New options.
* common.opt (gno-column-info, gcolumn-info): New options.
	* dwarf2out.c (dwarf2_lineno_debug_hooks): Formatting fix.
	(check_die): Also test for multiple DW_AT_decl_column attributes.
	(add_src_coords_attributes, dwarf2out_imported_module_or_decl_1): Add
	DW_AT_decl_column if requested.
	(gen_subprogram_die): Compare and/or add also DW_AT_decl_column
	if requested.
	(gen_variable_die): Likewise.
	(add_call_src_coords_attributes): Add DW_AT_call_column if requested.
	* doc/invoke.texi (-gcolumn-info, -gno-column-info): Document.

From-SVN: r245563
2017-02-18 17:10:43 +01:00
John David Anglin 47e16d83e9 thread_local-order2.C: xfail on hppa*-*-hpux*.
* g++.dg/tls/thread_local-order2.C: xfail on hppa*-*-hpux*.

From-SVN: r245562
2017-02-18 14:24:35 +00:00
Jakub Jelinek c28fcc601c re PR target/79569 (Unrecognized command line option ‘-m3dnowa’)
PR target/79569
	* config/i386/i386.opt (m3dnowa): Replace Undocumented with Report.
	* common/config/i386/i386-common.c (OPTION_MASK_ISA_3DNOW_A_SET): Define.
	(ix86_handle_option): Handle OPT_m3dnowa.
	* doc/invoke.texi (-m3dnowa): Document.
	* doc/extend.texi (__builtin_ia32_pmulhuw, __builtin_ia32_pf2iw): Use
	-m3dnowa instead of -m3dnow -march=athlon.

	* gcc.target/i386/3dnowA-3.c: New test.

From-SVN: r245561
2017-02-18 14:14:43 +01:00
Jakub Jelinek c26159516d re PR target/79559 (ICE in ix86_print_operand, at config/i386/i386.c:18189)
PR target/79559
	* config/i386/i386.c (ix86_print_operand): Use output_operand_lossage
	instead of gcc_assert for K, r and R code checks.  Formatting fixes.

	* gcc.target/i386/pr79559.c: New test.

From-SVN: r245560
2017-02-18 14:13:43 +01:00
Gerald Pfeifer dc15bc7ad6 * doc/xml/manual/profile_mode.xml: Fix link.
From-SVN: r245559
2017-02-18 08:37:19 +00:00
GCC Administrator d92c7d9551 Daily bump.
From-SVN: r245558
2017-02-18 00:16:15 +00:00
Joseph Myers 97fcf7446c Restore DECIMAL_DIG macro to C99/C11 value.
By extending the set of floating types, TS 18661-3 thereby affected
the definition of DECIMAL_DIG, which is defined in terms of the
"widest supported floating type".  This is not conditional on whether
__STDC_WANT_IEC_60559_TYPES_EXT__ is defined when <float.h> is
included.

I raised this possible incompatibility with C11 (an implementation
should be able to conform simultaneously with C11, and with C11 + TS
18661) in DR#501.  This is not yet resolved, but the latest proposal
<http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2108.pdf> would
obsolete DECIMAL_DIG with the intention of limiting it to the C11
types (so making it equivalent to LDBL_DECIMAL_DIG).  (This proposal
is intended to go along with a corresponding change to TS 18661-3 to
avoid the new types and non-arithmetic interchange encodings affecting
the value of DECIMAL_DIG.)

To avoid releasing GCC 7 with a wider-than-C11 value of DECIMAL_DIG
and possibly reverting back to a C11 value in a future release, this
patch reverts back to the C11 value now.  If the proposed resolution
to DR#501 changes again so that DECIMAL_DIG *should* have a
wider-than-C11 value, we can move back to a wider-than-C11 value in
GCC 8.

Bootstrapped with no regressions on x86_64-pc-linux-gnu.

gcc/c-family:
	* c-cppbuiltin.c (builtin_define_float_constants): Define
	__DECIMAL_DIG__ to the value for long double.

gcc/testsuite:
	* gcc.dg/c11-float-2.c: New test.
	* gcc.dg/torture/float128-floath.c,
	gcc.dg/torture/float128x-floath.c,
	gcc.dg/torture/float16-floath.c, gcc.dg/torture/float32-floath.c,
	gcc.dg/torture/float32x-floath.c, gcc.dg/torture/float64-floath.c,
	gcc.dg/torture/float64x-floath.c: Do not test comparison of
	*_DECIMAL_DIG macros with DECIMAL_DIG.

From-SVN: r245555
2017-02-17 23:04:14 +00:00
Jason Merrill cb94c7007c PR c++/79508 - lookup error with member template
* parser.c (cp_parser_template_name): Clear
	parser->context->object_type if we aren't doing lookup.

From-SVN: r245553
2017-02-17 17:05:18 -05:00
Jason Merrill 7c5867495b PR c++/78690 - ICE with using and global type with same name
* pt.c (type_dependent_object_expression_p): True for
	IDENTIFIER_NODE.

From-SVN: r245549
2017-02-17 15:28:38 -05:00
Bill Schmidt a530e18167 re PR target/79261 (vec_xxpermdi appears to have endian issues)
[gcc]

2017-02-17  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR target/79261
	* config/rs6000/rs6000.c (rs6000_expand_ternop_builtin): Add
	support for CODE_FOR_vsx_xxpermdi_v2d[fi]_be.
	* config/rs6000/rs6000.md (reload_gpr_from_vsx<mode>): Call
	generator for vsx_xxpermdi_<mode>_be.
	* config/rs6000/vsx.md (vsx_xxpermdi_<mode>): Remove logic to
	force big-endian semantics.
	(vsx_xxpermdi_<mode>_be): New define_expand with same
	implementation as previous version of vsx_xxpermdi_<mode>.

[gcc/testsuite]

2017-02-17  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR target/79261
	* gcc.target/powerpc/vec-xxpermdi.c: New file.

From-SVN: r245545
2017-02-17 19:11:06 +00:00
Jason Merrill edf1849aa6 PR c++/79549 - C++17 ICE with non-type auto template parameter pack
* pt.c (convert_template_argument): Just return an auto arg pack.
	(tsubst_template_args): Don't tsubst an auto pack type.

From-SVN: r245544
2017-02-17 13:42:43 -05:00
Jason Merrill b10c7cd74a PR c++/79556 - C++17 ICE with non-type auto
* pt.c (do_auto_deduction): Don't try to deduce from null type.

From-SVN: r245543
2017-02-17 13:42:37 -05:00