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author | Martin Sebor <msebor@redhat.com> | 2017-06-16 03:48:59 +0000 |
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committer | Martin Sebor <msebor@gcc.gnu.org> | 2017-06-15 21:48:59 -0600 |
commit | c3684b7b86da9b6b01f6fb274227fc6401df053e (patch) | |
tree | 921877ef9f69c6bac6285495a3eec052a4fad2a3 /ABOUT-NLS | |
parent | 6a382041ddccd829db190f7c112ecfff2e7d369a (diff) | |
download | gcc-c3684b7b86da9b6b01f6fb274227fc6401df053e.zip gcc-c3684b7b86da9b6b01f6fb274227fc6401df053e.tar.gz gcc-c3684b7b86da9b6b01f6fb274227fc6401df053e.tar.bz2 |
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
Diffstat (limited to 'ABOUT-NLS')
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