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Martin Sebor c3684b7b86 PR c++/80560 - warn on undefined memory operations involving non-trivial types 
gcc/c-family/ChangeLog:

	PR c++/80560
	* c.opt (-Wclass-memaccess): New option.

gcc/cp/ChangeLog:

	PR c++/80560
	* call.c (first_non_public_field, maybe_warn_class_memaccess): New
	functions.
	(has_trivial_copy_assign_p, has_trivial_copy_p): Ditto.
	(build_cxx_call): Call maybe_warn_class_memaccess.

gcc/ChangeLog:

	PR c++/80560
	* dumpfile.c (dump_register): Avoid calling memset to initialize
	a class with a default ctor.
	* gcc.c (struct compiler): Remove const qualification.
	* genattrtab.c (gen_insn_reserv): Replace memset with initialization.
	* hash-table.h: Ditto.
	* ipa-cp.c (allocate_and_init_ipcp_value): Replace memset with
	  assignment.
	* ipa-prop.c (ipa_free_edge_args_substructures): Ditto.
	* omp-low.c (lower_omp_ordered_clauses): Replace memset with
	default ctor.
	* params.h (struct param_info): Make struct members non-const.
	* tree-switch-conversion.c (emit_case_bit_tests): Replace memset
	with default initialization.
	* vec.h (vec_copy_construct, vec_default_construct): New helper
	functions.
	(vec<T>::copy, vec<T>::splice, vec<T>::reserve): Replace memcpy
	with vec_copy_construct.
	(vect<T>::quick_grow_cleared): Replace memset with default ctor.
	(vect<T>::vec_safe_grow_cleared, vec_safe_grow_cleared): Same.
	* doc/invoke.texi (-Wclass-memaccess): Document.

libcpp/ChangeLog:

	PR c++/80560
	* line-map.c (line_maps::~line_maps): Avoid calling htab_delete
	with a null pointer.
	(linemap_init): Avoid calling memset on an object of a non-trivial
	type.

libitm/ChangeLog:

	PR c++/80560
	* beginend.cc (GTM::gtm_thread::rollback): Avoid calling memset
	on an object of a non-trivial type.
	(GTM::gtm_transaction_cp::commit): Use assignment instead of memcpy
	to copy an object.
	* method-ml.cc (orec_iterator::reinit): Avoid -Wclass-memaccess.

gcc/testsuite/ChangeLog:

	PR c++/80560
	* g++.dg/Wclass-memaccess.C: New test.

From-SVN: r249234
 		2017-06-15 21:48:59 -06:00
..
include Add support for mutually-incompatible fix-it hints 2017-06-09 20:57:38 +00:00
po Regenerate .pot files. 2017-05-01 23:28:02 +01:00
ChangeLog Add support for mutually-incompatible fix-it hints 2017-06-09 20:57:38 +00:00
ChangeLog.jit Merger of dmalcolm/jit branch from git 2014-11-11 21:55:52 +00:00
Makefile.in * Makefile.in (po/$(PACKAGE).pot): Adjust bug reporting URL. 2017-02-09 08:55:46 +00:00
aclocal.m4 libcpp: Bump to automake 1.11.6 2015-05-13 11:02:17 +00:00
charset.c Update copyright years. 2017-01-01 13:07:43 +01:00
config.in re PR bootstrap/72823 (r239175 causes build failure) 2016-11-16 21:10:27 +01:00
configure re PR bootstrap/72823 (r239175 causes build failure) 2016-11-16 21:10:27 +01:00
configure.ac re PR bootstrap/72823 (r239175 causes build failure) 2016-11-16 21:10:27 +01:00
directives-only.c Update copyright years. 2017-01-01 13:07:43 +01:00
directives.c Update copyright years. 2017-01-01 13:07:43 +01:00
errors.c Update copyright years. 2017-01-01 13:07:43 +01:00
expr.c Update copyright years. 2017-01-01 13:07:43 +01:00
files.c Update copyright years. 2017-01-01 13:07:43 +01:00
identifiers.c Update copyright years. 2017-01-01 13:07:43 +01:00
init.c * init.c (cpp_init_builtins): Update __cplusplus for C++17. 2017-03-16 17:16:39 -04:00
internal.h Update copyright years. 2017-01-01 13:07:43 +01:00
lex.c libcpp: add callback for comment-handling 2017-06-05 20:53:06 +00:00
line-map.c PR c++/80560 - warn on undefined memory operations involving non-trivial types 2017-06-15 21:48:59 -06:00
location-example.txt Source range tracking in libcpp and C FE, with bit-packing optimization 2015-11-13 16:29:59 +00:00
macro.c Update copyright years. 2017-01-01 13:07:43 +01:00
makeucnid.c Update copyright years. 2017-01-01 13:07:43 +01:00
mkdeps.c Update copyright years. 2017-01-01 13:07:43 +01:00
pch.c Fix numerous typos in comments 2017-04-03 23:30:56 +01:00
symtab.c Update copyright years. 2017-01-01 13:07:43 +01:00
system.h Update copyright years. 2017-01-01 13:07:43 +01:00
traditional.c Update copyright years. 2017-01-01 13:07:43 +01:00
ucnid.h Update copyright years. 2017-01-01 13:07:43 +01:00
ucnid.tab Update copyright years. 2017-01-01 13:07:43 +01:00