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* flag-types.h (enum sanitize_code): Add SANITIZE_VPTR, include SANITIZE_VPTR in SANITIZE_UNDEFINED. * opts.c (common_handle_option): Add -fsanitize=vptr. * sanitizer.def (BUILT_IN_UBSAN_HANDLE_DYNAMIC_TYPE_CACHE_MISS, BUILT_IN_UBSAN_HANDLE_DYNAMIC_TYPE_CACHE_MISS_ABORT): New. * ubsan.h (enum ubsan_null_ckind): Add UBSAN_DOWNCAST_POINTER, UBSAN_DOWNCAST_REFERENCE, UBSAN_UPCAST and UBSAN_CAST_TO_VBASE. (ubsan_expand_vptr_ifn): New prototype. * internal-fn.c (expand_ANNOTATE, expand_GOMP_SIMD_LANE, expand_GOMP_SIMD_VF, expand_GOMP_SIMD_LAST_LANE, expand_UBSAN_NULL, expand_UBSAN_BOUNDS, expand_UBSAN_OBJECT_SIZE, expand_ASAN_CHECK, expand_LOOP_VECTORIZED): Make argument nameless, remove ATTRIBUTE_UNUSED. (expand_UBSAN_VPTR): New function. * internal-fn.def (UBSAN_NULL, ASAN_CHECK): Use R instead of W in fn spec. (UBSAN_VPTR): New internal function. * sanopt.c (tree_map_traits): Renamed to ... (sanopt_tree_map_traits): ... this. (sanopt_tree_triplet, sanopt_tree_triplet_map_traits): New classes. (sanopt_ctx): Adjust asan_check_map type for tree_map_traits to sanopt_tree_map_traits renaming. Add vptr_check_map field. (maybe_optimize_ubsan_vptr_ifn): New function. (sanopt_optimize_walker): Handle IFN_UBSAN_VPTR. (pass_sanopt::execute): Likewise. Call sanopt_optimize even for -fsanitize=vptr. * tree-ssa-alias.c (call_may_clobber_ref_p_1): Handle certain internal calls like pure functions for aliasing, even when they have other side-effects that prevent making them ECF_PURE. * ubsan.c (ubsan_vptr_type_cache_decl): New variable. (ubsan_expand_vptr_ifn): New function. cp/ * cp-gimplify.c (cp_genericize_r): Call cp_ubsan_maybe_instrument_member_call for member calls. (cp_ubsan_check_member_access_r): New function. (cp_genericize_tree): Call cp_ubsan_instrument_member_accesses. * cp-tree.h (cp_ubsan_maybe_instrument_member_call, cp_ubsan_instrument_member_accesses, cp_ubsan_maybe_instrument_downcast, cp_ubsan_maybe_instrument_cast_to_vbase): New prototypes. * cp-ubsan.c: New file. * Make-lang.in (CXX_AND_OBJCXX_OBJS): Add cp/cp-ubsan.o. * constexpr.c (cxx_eval_call_expression): Return void_node for IFN_UBSAN_VPTR. (potential_constant_expression_1): Return true for UBSAN_NULL, UBSAN_BOUNDS and UBSAN_VPTR internal calls. * typeck.c (build_class_member_access_expr): Provide locus for COMPONENT_REFs. (build_static_cast_1): Instrument downcasts. * class.c (build_base_path): For -fsanitize=vptr and !fixed_type_p add ubsan instrumentation for virtual_access. * call.c: Include internal-fn.h. (set_flags_from_callee): Handle internal calls. gcc/testsuite/ * g++.dg/ubsan/vptr-1.C: New test. * g++.dg/ubsan/vptr-2.C: New test. * g++.dg/ubsan/vptr-3.C: New test. * g++.dg/ubsan/vptr-4.C: New test. * g++.dg/ubsan/vptr-5.C: New test. * g++.dg/ubsan/vptr-6.C: New test. * g++.dg/ubsan/vptr-7.C: New test. * g++.dg/ubsan/vptr-8.C: New test. * g++.dg/ubsan/vptr-9.C: New test. From-SVN: r219695
60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/* UndefinedBehaviorSanitizer, undefined behavior detector.
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Copyright (C) 2013-2015 Free Software Foundation, Inc.
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Contributed by Marek Polacek <polacek@redhat.com>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_UBSAN_H
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#define GCC_UBSAN_H
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/* The various kinds of NULL pointer checks. */
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enum ubsan_null_ckind {
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UBSAN_LOAD_OF,
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UBSAN_STORE_OF,
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UBSAN_REF_BINDING,
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UBSAN_MEMBER_ACCESS,
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UBSAN_MEMBER_CALL,
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UBSAN_CTOR_CALL,
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UBSAN_DOWNCAST_POINTER,
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UBSAN_DOWNCAST_REFERENCE,
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UBSAN_UPCAST,
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UBSAN_CAST_TO_VBASE
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};
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/* This controls how ubsan prints types. Used in ubsan_type_descriptor. */
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enum ubsan_print_style {
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UBSAN_PRINT_NORMAL,
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UBSAN_PRINT_POINTER,
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UBSAN_PRINT_ARRAY
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};
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extern bool do_ubsan_in_current_function (void);
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extern bool ubsan_expand_bounds_ifn (gimple_stmt_iterator *);
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extern bool ubsan_expand_null_ifn (gimple_stmt_iterator *);
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extern bool ubsan_expand_objsize_ifn (gimple_stmt_iterator *);
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extern bool ubsan_expand_vptr_ifn (gimple_stmt_iterator *);
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extern bool ubsan_instrument_unreachable (gimple_stmt_iterator *);
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extern tree ubsan_create_data (const char *, int, const location_t *, ...);
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extern tree ubsan_type_descriptor (tree, enum ubsan_print_style = UBSAN_PRINT_NORMAL);
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extern tree ubsan_encode_value (tree, bool = false);
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extern bool is_ubsan_builtin_p (tree);
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extern tree ubsan_build_overflow_builtin (tree_code, location_t, tree, tree, tree);
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extern tree ubsan_instrument_float_cast (location_t, tree, tree, tree);
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extern tree ubsan_get_source_location_type (void);
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#endif /* GCC_UBSAN_H */
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