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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/101087] [9/10/11/12 Regression] Unevaluated operand of sizeof affects noexcept operator Date: Wed, 16 Jun 2021 09:13:04 +0000 [thread overview] Message-ID: <bug-101087-4-cAYqdJIeoJ@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-101087-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101087 Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Target Milestone|--- |9.5 Last reconfirmed| |2021-06-16 Summary|Unevaluated operand of |[9/10/11/12 Regression] |sizeof affects noexcept |Unevaluated operand of |operator |sizeof affects noexcept | |operator Known to fail| |10.3.0, 11.1.0, 12.0, | |4.8.0, 9.4.0 Known to work| |4.7.4 CC| |jakub at gcc dot gnu.org Status|UNCONFIRMED |NEW --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- It compiled with GCC 4.7 but stopped with r192141 (or r192142 but almost certainly the former): cp-tree.h (SIZEOF_EXPR_TYPE_P): Define. cp/ * cp-tree.h (SIZEOF_EXPR_TYPE_P): Define. * tree.c (cp_tree_equal): Handle SIZEOF_EXPR with SIZEOF_EXPR_TYPE_P. * mangle.c (write_expression): Likewise. * cxx-pretty-print.c (pp_cxx_unary_expression): Likewise. * error.c (dump_expr): Likewise. * parser.c (cp_parser_unary_expression): For sizeof call cxx_sizeof_or_alignof_{type,expr} just for diagnostics and return SIZEOF_EXPR with the operand. * pt.c (tsubst_copy, tsubst_copy_and_build): For SIZEOF_EXPR, call cxx_sizeof_or_alignof_{type,expr} for diagnostics, but return SIZEOF_EXPR with tsubsted operand. (value_dependent_expression_p): Handle SIZEOF_EXPR with SIZEOF_EXPR_TYPE_P. (instantiation_dependent_r): Likewise. * call.c (null_ptr_cst_p): Call maybe_constant_value for C++98. * semantics.c (finish_call_expr): Call sizeof_pointer_memaccess_warning if needed. (cxx_eval_constant_expression): Handle SIZEOF_EXPR. (potential_constant_expression_1): Remove early exit for C++98. Handle PROPERTY_REF. * decl.c (duplicate_decls): When redeclaring a builtin function, keep the merged decl builtin also if newdecl is a gnu_inline inline definition. (fold_sizeof_expr_r): New function. (compute_array_index_type): Fold SIZEOF_EXPRs in itype. * cp-gimplify.c (cp_genericize_r): Fold SIZEOF_EXPR. * typeck.c (cp_build_binary_op): For warn_for_sign_compare try harder using maybe_constant_value to get INTEGER_CSTs. * decl.c (stabilize_vla_size): Call pointer_set_destroy at the end. testsuite/ * g++.dg/torture/Wsizeof-pointer-memaccess1.C: New test. * g++.dg/torture/Wsizeof-pointer-memaccess2.C: New test. * g++.dg/warn/Wsign-compare-5.C: New test. * g++.dg/warn/Wsizeof-pointer-memaccess-1.C: New test. * g++.dg/warn/Wnull-conversion-1.C: For c++11 add dg-error. * g++.dg/ext/builtin30.C: New test. * g++.dg/ext/vla12.C: New test. * gcc.dg/builtins-85.c: New test. libstdc++-v3/ * testsuite/20_util/shared_ptr/cons/43820_neg.cc: Adjust line numbers.
next prev parent reply other threads:[~2021-06-16 9:13 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-15 19:58 [Bug c++/101087] New: " rkhlebnikov at bloomberg dot net 2021-06-16 9:13 ` redi at gcc dot gnu.org [this message] 2021-07-08 0:21 ` [Bug c++/101087] [9/10/11/12 Regression] " mpolacek at gcc dot gnu.org 2021-07-08 21:39 ` cvs-commit at gcc dot gnu.org 2021-07-08 21:48 ` cvs-commit at gcc dot gnu.org 2021-07-08 22:04 ` cvs-commit at gcc dot gnu.org 2021-07-08 22:06 ` [Bug c++/101087] [9 " mpolacek at gcc dot gnu.org
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